Math Learning for Kids - Free Educational videos for Students in K-12

Math Learning for Kids - By Homeschool Pop

Transcript


00:00	wow , We are going to learn so many cool
00:03	things on this home school pop video . All right
00:06	. What's the first thing we should learn ? How
00:09	about roman numerals ? Which is a different way to
00:13	write numbers . And it was used a long time
00:17	ago in ancient Rome and it's been used since then
00:20	. And you can think of it almost as a
00:22	secret code way of writing the numbers . It's pretty
00:26	simple to learn . And we're going to go through
00:28	that . The first roman numeral we're gonna learn is
00:33	the roman numeral . I and I is one I
00:39	equals one . So , if you see an eye
00:42	with the roman numeral , it's one . The letter
00:45	V . Is the roman numeral that means five .
00:49	And the letter X . Is the roman numeral ,
00:54	that means 10 . So , when you think one
00:58	, it's an eye , you think five . It's
01:01	a V . If you think 10 , it's an
01:04	X . So that's it . Just those three .
01:09	I it almost looks like a one . That's how
01:13	you can remember that . I is a one I
01:16	is the roman numeral for one . A V .
01:19	Is in the number five . When you spell it
01:22	out the number five , you see that right there
01:24	. It has a V . In it . So
01:26	when you think of V , you know , oh
01:28	you know what ? There's a V . In the
01:32	spelled out number five . So V has to be
01:36	five now . 10 is exit , We can't think
01:39	of anything that could remind us of that . So
01:42	there is no memorization thing just when you see the
01:44	exits 10 and that's just what we're going to have
01:48	to do . Okay , one last time here ,
01:52	I just want to make sure you get it .
01:53	There's only three . I is the roman numeral for
01:57	one , the is the roman numeral for five and
02:01	X . Is the roman numeral for 10 . And
02:04	you've got to understand that so that we can start
02:06	playing kind of a game of putting them together And
02:10	making numbers other than just 15 and 10 . So
02:15	let's get started . So let's practice putting these Roman
02:20	numerals together . What number do you think this is
02:25	? You see two eyes And I is one .
02:32	So the answer is to two eyes is the number
02:37	two . What about this one ? You what number
02:46	do you think this is ? Why there are three
02:51	eyes ? Yeah , it's the number three . The
02:57	let's try this one . What number do you think
03:02	this is ? We see two . X is an
03:08	X equals 10 . So 10 plus 10 equals 20
03:15	. Great job . This is the number 20 .
03:23	Whoa . This one is so cool . Okay .
03:27	An X and a V . What number do you
03:29	think this is ? Okay . The X . Is
03:35	a 10 V . Is what number five , awesome
03:42	. So what is 10 plus five ? 15 .
03:48	Whoa . Thanks so much for helping out now that
03:54	we've looked at how to put some of these together
03:57	. I want to tell you about two special numerals
03:59	that are a little bit different . And so you're
04:02	gonna have to just remember these on their own .
04:04	The first is the number four and the number four
04:07	is represented with an I . And V . And
04:11	eyes before the V . Because four is one less
04:16	than five which is V . So remember with four
04:20	, its I . V . With nine similar except
04:24	with the X . Nine is I . X .
04:27	X . Is 10 and eyes just before it .
04:30	So nine is I . X . Okay that was
04:36	really cool . Thanks for hanging out and learning those
04:39	with me . But we're not done . We want
04:41	to go through all the numbers up to 30 just
04:45	using the numerals and I want to see how much
04:48	you've really learned . So if you'll do me a
04:50	favor as the numerals go up . I want you
04:53	to say the numbers along with me and we can
04:57	practice together . Sound good . Alright , let's get
05:00	started . One two 34 five Sex seven eight nine
05:22	. Yeah . 10 11 . Yeah . 12 ,
05:29	13 , 14 , 15 , 16 , 17 ,
05:41	18 , 19 , 20 21 22 23 24 25
05:55	26 , 27 28 29 and 30 . Well ,
06:05	there you have a new way to write numbers .
06:09	Hey ? Well , okay , First of all elephants
06:12	don't drive . Okay , elephants can't get a driver's
06:15	license and he's driving on the grass . He's driving
06:19	on the grass . You're gonna row in the lawn
06:21	. Okay , Let's go it on their . Alright
06:24	, this is out of hand . Okay , Elephant
06:27	. I don't want to tell you what you can
06:28	do what you can't do what you can't drive .
06:31	All right . Oh my goodness ! All right ,
06:34	Next we are going to learn about even and odd
06:40	numbers . A number belongs to one or two groups
06:43	. Either it's an even number or it's an odd
06:46	number . So what's going on ? Why is this
06:49	even a thing we're going to talk about it even
06:55	in odd is actually pretty easy , but it's just
06:58	a matter of knowing what to look for . So
07:01	we're going to be like detectives together . Okay ,
07:03	you're gonna have to have an eagle uh to help
07:07	us out on her quest . We're gonna use dinosaurs
07:10	, dinosaurs are awesome . And here's a red dinosaur
07:14	. That's I don't know why it's windy , there's
07:16	wind going on and I don't know what's what's let's
07:20	change the scenery . Let's let's make it more modern
07:23	day . There you go . Look at that .
07:24	Just walking through the neighborhood strolling . he's ready to
07:28	help us discover the secret , right to knowing even
07:35	an odd . So what is this key that we're
07:39	looking for ? What are we looking for that will
07:40	tell us if a number is even or if the
07:44	number is odd and even number can be grouped by
07:50	to an odd number , cannot be evenly grouped by
07:54	two . So it's all about the number two .
07:56	And that might sound confusing . Let me show you
07:58	and you'll see here is the easiest number to do
08:04	. We're looking for the number two . Okay .
08:07	Can it be put in a group of two ?
08:09	Well , yes , because it's the number two .
08:10	We've got to dinosaurs . That makes to even now
08:16	. This is odd . This dinosaurs . All alone
08:19	. He's not in a group of two . This
08:22	makes the number one an odd number because he's all
08:25	alone . That's odd . It's an odd number .
08:29	Let's look back at the number to see what's neat
08:33	about . This is it's an even group of two
08:36	. That means our dinosaur has a friend . He
08:38	can talk to his friend , he can hang out
08:41	. It's not it's not weird . It's not odd
08:43	. It's an even number here . We have three
08:47	dinosaurs . Now can we put the number three in
08:50	even groups of two ? Well no because that third
08:53	dinosaurs , all alone . The top two dinosaurs have
08:56	somebody . Three is odd . There's one that's missing
08:59	a partner Here . We have four dinosaurs . Now
09:04	we're looking for groups of the # two . Now
09:07	we have two groups of to hear . That means
09:09	it's an even number . Each dinosaur has a friend
09:13	, wow . Five dinosaurs . But look one on
09:20	the bottom doesn't have a pal , doesn't have a
09:23	friend . That's odd . It's not evenly grouped into
09:27	25 is an odd number . Hey buddy . Okay
09:31	don't don't run . Okay we'll get back to the
09:33	even numbers . I know you don't like the odds
09:35	. You don't like being the odd dinosaur out .
09:38	It's okay . I promise this next number is going
09:41	to be even because it goes for even odd .
09:44	Even odd . Just hang on man dinosaurs . You
09:49	know so temperamental . You know I mean what's that
09:53	all about ? I mean a dog dog wouldn't have
09:56	done that . You know dogs are better . I
09:59	think now the dinosaurs you know I'm just kidding ,
10:03	dinosaurs are so cool . Moving on here we have
10:13	six dinosaurs . Now each dinosaur has a friend .
10:18	That means six is even you can split it up
10:22	in groups of two . Oh here we have seven
10:29	dinosaurs . But there's one dinosaur that's all alone .
10:32	Six of them have friends but one is all alone
10:35	. Doesn't have a pair . Seven is odd .
10:41	Mhm . The number eight . Does everyone have a
10:45	friend ? Yes there's no one without a friend .
10:48	Number eight is an even number . It splits up
10:52	into two very nicely . Eight is even let's go
10:57	even higher than number nine . Now you can see
11:00	really quick it's easy to spot . Is nine even
11:04	or odd . Yes it's odd . There's one who
11:08	doesn't have a friend . Nine . Izod . Oh
11:12	my goodness . 10 . 10 . Is it even
11:16	or is it odd ? You tell me you know
11:18	how to do it now . You know the trick
11:21	? Yes 10 is even . Everybody has a friend
11:27	. Now we're about to teach you to sneaky tricks
11:32	that you can use with even and odd numbers .
11:34	Okay so seriously Because it's well it's it's not it's
11:39	not really sneaky . But anyway so this first trick
11:44	is that all of the numbers alternate from odd to
11:48	even and back . And we're going to show you
11:51	what that means and what that looks like Here we
11:57	have the 1st 10 numbers numbers one through 10 .
12:01	And the trick was all of the numbers alternate from
12:04	odd to even and back . Do you remember if
12:08	number one is odd or even ? Yes . Number
12:15	one is odd because remember number one all by himself
12:18	doesn't have a friend , doesn't have a partner .
12:20	It's not an even number . Number one is odd
12:23	. Now we remember number two , right . Number
12:27	two is even Yes because it can be grouped into
12:31	because it is too . Now if they alternate that
12:35	means which one is number three ? It's odd .
12:43	This is where it gets fun . If three is
12:46	odd then that means four is even good job and
12:53	if four is even , that means five must be
12:58	odd . Yeah and if five is odd , that
13:03	means six must be you guessed it even . And
13:09	if six is even , that means seven must be
13:14	odd . Yes , seven is odd . If seven
13:18	is odd , that means eight is come on .
13:21	What's the pattern ? Eight is even . And if
13:25	Aid is even , that means nine must be odd
13:30	and nine is odd . Come on . Is this
13:32	not just the most fun trick ever ? If nine
13:37	is odd , that means 10 is even . They
13:41	all alternate . So the first trick is that they
13:46	alternate the numbers alternate , odd , even odd ,
13:49	even odd , even odd , even odd . Even
13:53	now , we're going to look at the second trick
13:56	. The second trick is that with numbers bigger than
14:00	10 ? If it's odd or even you can see
14:03	on the end With numbers bigger than 10 . If
14:07	it's odd or even you can see on the end
14:14	To demonstrate , let's play a game we here at
14:17	home school pop call odd or even . We're gonna
14:21	look at a number that's bigger than 10 . We're
14:24	going to look on the end to see if it's
14:26	even or if it's odd . Our 1st 1 is
14:29	the number 21 . Is it odd ? Or is
14:33	it even ? It's odd . How why what we
14:39	look on the end ? The end is a one
14:42	. A one is odd . It's all by itself
14:45	. A one is odd . So 21 is odd
14:49	because one is the ending it . Mhm . Did
14:55	you know that means 71 is odd and 101 is
15:00	odd and 131 is odd . And the number 1000
15:05	and one is odd . Why they all end in
15:08	one . Let's try this one . The number 32
15:12	is odd . Or is it even 32 is even
15:20	? Well , how do we know because of the
15:23	ending ? Look at the ending , it's the number
15:24	22 is an even number because it's a group of
15:28	two . It can be put in groups of two
15:30	because it is to the same rule applies . This
15:34	is the second trick with numbers bigger than 10 if
15:37	it's odd . Or even you can see on the
15:40	end every single number that you can think of ends
15:45	in two is an even number . Let's try one
15:53	. That's a little more tricky . Let's try the
15:56	number . 100 is 100 odd . Or is it
16:01	even ? Mhm . 100 is even . It's even
16:12	and we know that because of the ending it ends
16:15	in a zero . Now remember second trick with numbers
16:19	bigger than 10 if it's odd or even . You
16:22	can see on the end and ending is a zero
16:26	and every number that ends and zero is even .
16:30	Let's look at the chart again . Mhm . As
16:34	you can see 10 on the bottom ends in zero
16:39	and it's even every single number that ends in zero
16:43	is even just like every number that ends in A
16:46	one is odd . Every number that ends in a
16:49	two is even . Every number that ends in A
16:52	three is odd because three is odd , every number
16:56	that ends in A four is even and it goes
16:59	on and on numbers that end in five are odd
17:02	numbers that end in six or even numbers that end
17:06	in seven are odd Numbers that end in eight are
17:13	even Numbers that end in nine are odd and the
17:18	numbers like 10 , the end in zero are always
17:22	even . So there you go odd . And even
17:27	as long as you learn these you'll know any number
17:30	because the endings always tell you if it's otter even
17:34	so once you know these you'll know all of them
17:40	. Oh this is such a heavy cart . Oh
17:44	my goodness . It's hard work . You know ,
17:47	a lot of times learning can be hard work too
17:50	. But we hope that these videos are really helpful
17:53	. Make learning fun . So that learning is hard
17:56	, like pushing this cart . Oh my goodness !
17:59	All right , what's the next thing we should learn
18:02	about ? Let's learn about equal parts . We're going
18:07	to learn how to recognize if something shows equal parts
18:12	or if something shows unequal parts , hold on my
18:20	my boss is giving me his pizza order again .
18:24	I'm telling you he loves pizza way too much .
18:27	I mean I like pizza , it's fine , but
18:30	he's always giving me his pizza order . I'm always
18:33	picking it up for him and this is just this
18:36	is uh you know I I just here I just
18:39	got to keep writing down , you know , he's
18:41	got all these instructions . He likes his pizza a
18:44	certain way . Oh wow . Oh he's he wants
18:49	he wants me to have some of the pizza with
18:51	him . Oh man . And and Tad and and
18:55	Gilbert , all four of us having the same pizza
19:00	. All the sharing of pizza . So what would
19:05	that look like ? What would it look like if
19:07	we had this pizza put in four equal parts ,
19:13	how would we know that these parts of the pizza
19:16	were equal A Pizza with four equal parts might look
19:23	like this pretty cool . Huh ? We know the
19:28	parts are equal because each of the parts are the
19:32	same size . We're going to play a game called
19:40	Are these equal parts ? Okay . It's not really
19:46	a game , but we can make it into a
19:47	game , right ? Okay . It's not like checkers
19:50	. It's not like chess , you know , It's
19:52	not like basketball , like soccer . Okay . It's
19:56	not like a game game game . Okay . But
19:59	it's still going to be fun . And we're going
20:01	to be able to see work with me here .
20:05	Okay . We're going to be able to see if
20:08	these pictures show equal parts or if these pictures show
20:13	unequal parts . So here is our first picture .
20:20	Now , we're gonna be looking to see if this
20:23	picture shows equal parts . And this picture shows how
20:27	many parts . Two good job now are these equal
20:34	parts ? Yes , this picture shows two equal parts
20:43	and we know they're equal because they're the same size
20:47	. Now look at this one . This picture shows
20:53	how many parts Yeah , three parts . Now are
20:59	these equal parts ? No , they're not equal parts
21:05	. They're not equal parts because they're not all the
21:08	same size . This picture does not show equal parts
21:13	. Great job . Now let's give this picture a
21:18	try How many parts to this picture show three good
21:26	job . And are these parts equal parts ? No
21:33	they're not equal parts . Can you imagine if you
21:36	got that bottom part ? If this if this square
21:40	was like a cake and you've got that bottom part
21:42	that wouldn't be fair . Why ? These are not
21:44	equal parts . Let's give this triangle picture a Try
21:51	. How many parts does this picture show Great Job
21:57	. three . And are these equal parts ? Mhm
22:03	. Mhm . Yes they're equal parts because they are
22:07	all the same size . Equal parts means each part
22:11	is the same size . Great Job . What about
22:18	this picture ? How many parts does this picture have
22:23	? Be careful when you count ? It's a little
22:25	bit tricky . This picture has four parts . Now
22:32	. Are these equal parts ? No , they're not
22:37	equal parts . How do we know because they're not
22:41	the same size ? Yeah , I don't know about
22:48	you but I feel pretty good about this . Equal
22:50	parts stuff . It just means that the parts are
22:53	the same size when they're the same size . That
22:56	means they're equal . You're doing great , you're increasing
23:01	your skills just like this razor , you're racing on
23:05	the water , you're increasing your skills . You're doing
23:08	a wonderful job . And next we are going to
23:11	learn about units of time . Mhm . There are
23:19	three main units of time in a day . Seconds
23:23	, minutes and hours . A second is the smallest
23:30	unit of time . It's so tiny . A minute
23:33	is a lot bigger than a second . And then
23:36	an hour is even bigger . An hour is the
23:39	biggest unit of time in a day . Yeah .
23:43	Yeah , we're going to look at each of these
23:47	individually . Okay , It is going to be a
23:51	great time . It's funny right first we're gonna learn
24:02	about seconds A second is the smallest unit of time
24:10	. It's extremely short . Now , a fair warning
24:13	to you . You're about to see some very cute
24:16	animals that are going to help us understand just how
24:19	long a second is . Hey , what did we
24:24	say ? We warned you the time that it takes
24:28	. This cute little dog to jump is a second
24:33	. It's just like a moment . Boom . The
24:36	dog jump swooped in the air for a second down
24:40	and you see how this dog is jumping over that
24:42	pole . Really cool . Great dog . It takes
24:45	just a second to jump . That's the second .
24:49	That's the sound . That's the second . Mm Okay
24:55	. Another cute animal . This is a cat and
24:57	this cat is blinking . The time it takes to
25:01	blink is a second . Not just for cats for
25:03	humans . Why don't you give it a try ?
25:05	Go ahead and blink . Yeah that's the second .
25:10	Can you blink again ? That's another second . Can
25:14	you blink again ? That's a second . It's so
25:17	short . It's such a short amount of time .
25:20	Could you blink again ? Okay that will be the
25:22	last time . Okay it's a second . It's a
25:24	second to blink . Oh who doesn't love a good
25:31	seal ? Here's a seal in the water . Sang
25:35	high by waving . That wave takes just a second
25:40	. Did you know when we say hi ? That
25:42	takes a second to why don't we give that a
25:45	try ? Say the word high hi hi . That's
25:52	the second . High . That's a second . High
25:56	. Now I don't want you to annoy people around
25:58	you but I want you to understand . It just
26:00	takes a second to say hi or to waive waving
26:05	usually takes just a second . Mhm . On a
26:12	clock . Seconds are shown with the thinnest line .
26:15	It's also the line that moves the fastest because seconds
26:19	are the shortest period of time now , you might
26:26	not realize this , but every unit of time has
26:29	an abbreviation . An abbreviation is a short form of
26:34	a word and seconds actually have two abbreviations . The
26:43	abbreviations of seconds are sec or just the letter s
26:50	. Here's an example . You could say 1 2nd
26:53	or if you wanted to write it with an abbreviation
26:56	, you could write one sec Or just one s
27:02	. Here's another example . Five seconds could be written
27:08	five sec or five s . Now you don't always
27:12	have to do that . You don't always have to
27:14	use an abbreviation . But if you want to abbreviate
27:17	and make seconds shorter , you can just write five
27:20	sex or five s . The final example , 10
27:27	seconds can be written 10 sec or 10 S .
27:32	Sec or s are abbreviations of the word . Seconds
27:39	. Seconds are the shortest unit of time . Mm
27:47	Next we're gonna talk about minutes a minute is the
27:53	next biggest unit of time . After seconds . Now
27:56	, how much bigger is a minute than a second
28:02	? Well , believe it or not a minute is
28:05	60 seconds . 60 seconds . Sixties . A lot
28:09	. Now you might be wondering how much is 60
28:11	? I'd love to see that . Well look at
28:14	this A it's a lot . It's a lot .
28:19	60s . A lot . A minute . It's 60
28:22	seconds . Here's an example of something that takes about
28:28	a minute . A little girl blowing bubbles takes about
28:31	a minute . About 60 seconds for a while .
28:35	She'll blow these bubbles and then she'll be done .
28:38	She might spend a couple minutes where she might just
28:40	spend a minute . It's not too long but it's
28:43	not too sure it's a minute . This little boy's
28:48	tired . Maybe he played for a long time and
28:51	he just wants to sit down for a minute .
28:53	This is something that might take a minute sitting down
28:56	and just taking a break . It wouldn't be enough
29:00	of a break to just take a second break but
29:03	a minute can help him rest . A minute is
29:07	60 seconds . It's enough time to take a break
29:10	to breathe for a while and then to go back
29:13	to playing . Here's our final example of a minute
29:17	a little girl who's cuddling with her teddy bear .
29:21	Maybe she named him Mr Perkins and maybe she'll give
29:24	him hugs every once in a while . But now
29:26	she's taking her time to cuddle him for 60 seconds
29:32	a minute . Maybe she'll spend about a minute a
29:34	second . Would just be too short to hug Mr
29:37	Perkins but cuddling for a minute . She would take
29:41	a minute to do that on a clock . Minutes
29:47	are shown with the longest line . So when you
29:50	look at a clock the longest line called a hand
29:53	on a clock that longest hand measures the minutes now
30:01	. Remember every unit of time has an abbreviation and
30:05	remember an abbreviation is just a short form of a
30:09	word . The abbreviation of minutes is men . M
30:17	. I . N . Men . Here's an example
30:21	. One minute would be abbreviated one men . Look
30:28	at this 15 minutes would be abbreviated five men .
30:37	10 minutes would be abbreviated 10 men a minute is
30:44	the next biggest unit of time after seconds . The
30:52	last unit of time we're looking at today are ours
30:56	. Ours are the largest units of time in the
31:00	day . In fact in a day there's only 24
31:03	of them . Not many at all . Okay ,
31:08	so how long is an hour exactly ? Well ,
31:11	an hour is 60 minutes . Do you remember how
31:15	big the number 60 is ? Right ? Oh ,
31:18	Lots of minutes . 60 minutes . An hour is
31:23	60 minutes . Remember a minute is 60 seconds .
31:27	So it's a lot of time . Here's an example
31:31	of an hour . This girl playing out in the
31:34	snow . This girl would want to play out in
31:37	the snow for like an hour , right , 60
31:39	minutes . One minute wouldn't be enough playing out in
31:42	the snow in one second . Well , one second
31:45	is like high and that's the second . Remember ?
31:48	So an hour , 60 minutes . It's a good
31:50	long time to play out in the snow . And
31:53	that's how long this little girl might be playing outside
31:57	in the snow . Oh , fun playing out in
32:03	the water . That's awesome . This is so much
32:06	fun . This little boy is probably going to want
32:09	to play in the water for about an hour .
32:11	Right ? One minute . Wouldn't belong to play in
32:14	the water at all . Remember one minute is only
32:17	60 seconds and one second . Remember high , That's
32:21	a second . So when hours , a good long
32:23	time to play out in the water to have a
32:26	lot of fun and to get some really great exercise
32:30	. Here's our final example of an hour . This
32:34	little girl is taking a nap . A nap .
32:38	Oftentimes takes an hour . One minute wouldn't be long
32:42	enough for a really good nap and one second .
32:45	Well you already know how long a second is a
32:48	second . Wouldn't do it all either . And hours
32:51	a good long time on the clock . Hours are
32:58	shown with the thick short line and that's the line
33:02	on the clock that moves the slowest because ours are
33:06	so long Now , as you remember before , every
33:12	unit of time has an abbreviation and an abbreviation is
33:18	a short form of a word . Okay , These
33:22	kids already know this . Okay . And why is
33:24	this penguin moving soap ? The abbreviations of an hour
33:30	? Our HR or just H here's an example ,
33:34	one hour could be written one HR or one H
33:42	. Now . five hours could be abbreviated five hr
33:47	. Or five age and 24 hours , which is
33:52	how long a day is ? Could be abbreviated 24
33:56	HR or 24 age , wow mom , you're doing
34:02	such a great job in your race . I had
34:05	no idea you were an athlete . Okay . I
34:08	mean with all that cloth wrapped around , you're doing
34:11	great . You're doing a great job . Just like
34:13	these kids are doing a great job of learning .
34:15	In fact , how about this ? The next thing
34:18	we're gonna learn about is subtraction . Oh do you
34:28	know where I am ? Yeah . You know I'm
34:32	waiting patiently in this waiting room . Oh man ,
34:36	it has been a while . Have you ever been
34:39	in a waiting room before ? Cool . Yeah ,
34:47	they can be fun but you do have to be
34:48	patient and it's a good time to think . You
34:51	know , you can think about all kinds of things
34:53	like okay I have eight cowboy hats . I know
34:59	it's crazy , it's weird . Eight cowboy hats and
35:03	they're all the exact same . The exact same hat
35:07	. I've got eight of them . Eight brown cowboy
35:11	hats . I mean what's the guy going to do
35:14	with eight brown cowboy hats that look the exact same
35:20	? What could I possibly do with eight Brown Cowboy
35:24	Hats that are all the same . I mean I
35:26	should probably give some of them away . You know
35:31	, I could give away one of my hats to
35:32	bob . I'm cooking . Might want one . Yeah
35:35	she might like a brown cowboy hat . You know
35:39	I could give one a nancy you know just in
35:41	case she ever got invited to western party and chomsky
35:45	he'd take a hat . So as I'm sitting here
35:49	thinking about my eight hats , I need to figure
35:52	out how many hats I'll have left if I give
35:56	some of them away to figure that out . We
36:00	need to use subtraction . You see subtraction is when
36:05	you take numbers away . Yeah . Very simple subtraction
36:09	is when you take numbers away . So I begin
36:14	with eight hats and I decided to give one away
36:18	. We're gonna need to subtract one from eight .
36:22	The way we would write this is 8 -1 .
36:28	Now remember when we subtract , we're just taking numbers
36:33	away so 8 -1 , we're gonna just take one
36:36	away . There we go . How many hats do
36:40	I have left ? What is a -1 ? If
36:45	it helps you can just count how many hats I
36:48	have left . What is 8 -1 ? Yeah seven
36:56	eight minus one is seven . Now I have seven
37:01	hats . Remember subtraction is when you take numbers away
37:08	and as you might have noticed we use the minus
37:12	sign . When we write a subtraction problem you can
37:16	see it right there in the middle . It's just
37:19	like a dash . That's the minus sign . Yeah
37:23	so now I have seven hats but two of my
37:25	friends stopped by and I decided you know what ?
37:28	I know I just have seven hats now but I
37:30	want to give two of them away . Now I'm
37:34	gonna be subtracting two hats from my collection . We
37:38	would write this by saying 7 -2 . Now let's
37:45	take away two hats . We'll find out how many
37:48	we have left . What a wonderful subtraction problem .
37:53	What is 7 -2 ? If you need help you
37:56	can just count how many hats are left . What
37:59	is 7 -2 ? Seven minus two equals five .
38:05	Yeah . Five hats . And you can even count
38:08	them 12345 There are five hats left . Seven minus
38:14	two equals five . Do you see how fun and
38:20	simple subtraction is ? Subtraction is when you take numbers
38:25	away . So now I have five hats in my
38:30	collection . Only five hats left . But then I
38:33	meet up with my cousins who we dewey and Stewie
38:36	who want to have hats too and I'd love to
38:39	give them hats . So I'm gonna give three more
38:43	hats away . So I have five hats and we're
38:47	gonna subtract three hats . We would write that five
38:51	minus three . Oh I love subtraction so much .
38:58	No . All right Sara being there we go .
39:02	The three hats are gone . So 5 -3 .
39:07	How many hats are left ? It's pretty simple ,
39:11	isn't it ? Mhm . Yeah 5 -3 equals two
39:20	. Good job . Subtraction is just taking numbers away
39:24	and 5 -3 leaves you with two . Now I
39:28	have just two hats . We love subtraction . I
39:33	mean subtraction is when you take numbers away and why
39:39	am I in the middle of the road with the
39:41	shopping card ? So I had my two hats and
39:48	that's fun because then the hat has a friend and
39:52	they're like buddies and they're like a pair of friends
39:57	and then chomsky came by and I said oh I'm
40:03	going to have to do subtraction again , I'm going
40:07	to have to subtract again . Old chomsky , you
40:10	know that charms they came by ? I said I'm
40:14	going to have to subtract again . Mhm I'm going
40:20	to have to subtract one more time . So I
40:25	have two hats minus one . Yeah 2 -1 .
40:34	So we subtract that one . We take that one
40:37	away and how many hats are left ? What is
40:42	2 -1 ? Mm yep 2 -1 equals one .
40:52	There's only one hat left which is fine . I
40:55	mean you know I can only wear one hat at
40:58	a time and it was the same exact hat .
41:02	I think about it . Subtraction has been good to
41:04	me . It's good subtraction is taking numbers away .
41:10	Yeah trump sometimes . I do wonder what would have
41:14	happened if I didn't give that hat away . If
41:19	had he still had his friend they could have gone
41:22	to the beach together . They could have gone to
41:25	birthday parties together . Yeah but actually they had a
41:31	better purpose to make a friend happy . So ,
41:37	in this waiting room , all I gotta say is
41:41	thanks subtraction . You are pretty awesome . We are
41:51	so happy to have you with us . I mean
41:54	you are so awesome . You really are . Oh
41:57	, you like my poster Mr Whiskers poster . You
42:01	know , it's pretty cool . Pretty cool . You
42:03	know , it's a pretty cool poster . Pretty cool
42:06	cat too . I wonder what he would like to
42:09	learn about next . If he would learn from one
42:11	of our videos , what would he like to learn
42:13	next ? Mm How about let's learn about addition .
42:24	I love Edition . I love it very much .
42:27	I love Edition . I add up all my stuff
42:32	. I know the voice of an angel . All
42:36	right , So , really ? Why do I love
42:39	audition ? Why do I love Edition ? And why
42:42	should you love Edition ? Yeah , Well , I
42:46	love Edition because Edition is so simple and so much
42:51	fun . We're gonna show you were gonna prove to
42:54	you that addition is so simple and so much fun
42:57	. You're gonna have a great time doing it .
43:01	Okay , so you might be wondering what is addition
43:04	, What do we do when we do addition ?
43:05	Well , addition is putting numbers together . It's like
43:09	a great game of putting numbers together . Okay ,
43:14	addition is putting numbers together . Now we're going to
43:19	show you exactly how this works by talking about this
43:24	sport . Do you know what sport this is ?
43:32	Yeah , this is golf . This lady hit the
43:39	golf ball and she's hoping that the golf ball goes
43:43	into the hole . We're pulling for you sally .
43:47	Don't know if he actually got the ball in the
43:49	hole , but we're pulling for you sally , You
43:51	can do it salad , you can do it .
43:53	You see , she's so excited . She doesn't know
43:56	, she doesn't know but we don't know either .
43:59	So anyway all we can do is guess we don't
44:03	really know sally all that well . But let's pretend
44:07	that Sally loves golf and let's pretend that sally likes
44:12	to collect golf balls . So sally is playing with
44:19	one golf ball . Let's say that's the only golf
44:23	ball she has with her right now . She's got
44:26	one golf ball but she finds another golf ball by
44:32	a tree . So she had one golf ball and
44:37	then she found another one . We need to put
44:41	these numbers together don't we ? To find out how
44:44	many golf balls she has now putting numbers together .
44:48	That's that's addition , that's addition . So now we
44:55	put these two numbers together . She had one golf
44:59	ball , she found another one . So let's add
45:02	both of those balls . How many do we have
45:07	? Yeah . To sally now has two golf balls
45:14	. Good job Sally , oh , audition , I
45:19	knew I loved you audition . All you are is
45:23	just putting numbers together . So simple , so fun
45:27	a game anyone can play well , you know ,
45:33	sally , you know sally , she went back to
45:36	that golf course the very next day because remember she
45:41	loves golf , right ? And of course sally brought
45:46	her to golf balls because remember she had one golf
45:50	ball and she found another one , so now she
45:52	has to but you know what , she had a
45:54	great day at the course and she actually found two
45:58	more balls . I know isn't that crazy , sadly
46:02	is really great at finding golf balls . She found
46:06	two more balls . Now we have to find out
46:12	how many golf balls she has are just like we're
46:16	putting that we're putting numbers together , it's addition ,
46:19	it's hard we're gonna get to through addition again .
46:22	Remember audition is putting numbers together ? She had two
46:26	balls and now she's found two more balls and we
46:30	get to find out how many she has now .
46:32	That's edition putting numbers together . So she had two
46:38	balls and she's found two new ones . So we
46:41	need to find out what two plus two is .
46:45	What a great addition problem . What's two plus two
46:50	? If you don't know you can actually just count
46:53	the golf balls . What's two plus two ? Yeah
46:59	. 42 plus two equals four . Remember , addition
47:07	is putting numbers together . Two plus two equals four
47:14	. That's addition , putting numbers together . Oh bless
47:22	her heart . Sally's at it again . She's back
47:25	at the golf course to collect more golf balls .
47:31	So sally brings all of her golf balls . Now
47:35	she has four of them . She brought all four
47:39	to the golf course . Well she looked high and
47:43	low and wouldn't you know it ? She found three
47:47	golf balls during her time at the golf course .
47:51	I know she's so good at collecting golf balls .
47:55	Now , we need to figure out how many golf
47:58	balls she has . And yes , we're putting numbers
48:01	together . So it's going to be an addition problem
48:04	. She had four golf balls and now she has
48:08	three more golf balls . So what is four plus
48:14	three ? Mm , Okay , remember with addition ,
48:20	we're just putting numbers together . So if you need
48:23	help , you can actually count the number of golf
48:26	balls on the screen . What's four plus three ?
48:35	Yeah , four plus three equals seven . She has
48:40	seven golf balls now . Great job adding . Well
48:47	, now , you know , the basics of audition
48:50	and now , you know why I love auditions so
48:54	much . In the comments below . Tell us how
48:57	much you love edition because it's fun . Right ?
49:00	It's simple . It's fun where sally , where sally
49:04	ah there she is . She is . There's our
49:07	little star . Thanks for helping us count how many
49:10	golf balls shiga and remember addition is just putting numbers
49:15	together . Oh wow . Look , it's the homophone
49:19	cow , Homophone cow , hama phone , cattle .
49:24	You're just walking , you're just just gonna ignore me
49:27	. I see how it is . Okay , so
49:30	you're upset that we haven't included you in other videos
49:32	? What do you call this ? You know ,
49:34	you're in a compilation video . That's cool too .
49:37	All right . I need to talk to the homophone
49:41	cow , but in the meantime , let's learn about
49:46	fractions . Fractions are so awesome and so much fun
49:52	. Many of you think so too . A couple
49:54	of weeks ago we set up a poll on our
49:56	channel and many of you voted for fractions as our
50:00	next math video . That's really awesome . Thanks everyone
50:03	for voting . And don't worry , we'll make the
50:05	other two videos to later on . But this is
50:08	all about fractions . All right , well let's start
50:13	here . What is a fraction When we say the
50:17	word fraction , what do we mean ? What is
50:19	a fraction ? Well , a fraction is something that
50:25	shows parts of a whole , let's say there's this
50:30	lady named Cindy . Cindy has a pizza , which
50:36	is great . She loves pizza . So yummy pizza
50:43	. But then her friend chomsky arrives . You remember
50:46	chomsky chomsky likes pizza too and he's a little bit
50:50	hungry . So maybe Cindy isn't going to eat the
50:53	whole pizza now , maybe they're gonna split it .
50:56	What do you think ? So ? They split the
50:59	pizza in half . Each of them get one half
51:03	of the pizza that neat . Then everyone has pizza
51:08	. Each of them have one half of the pizza
51:11	. They split it right down the middle . Now
51:16	remember a fraction is something that shows parts of a
51:20	whole . So here is what the fraction looks like
51:25	a one a line and the two that is the
51:29	fraction . One half each of them . Cindy and
51:33	chomsky , get one half of the pizza . So
51:39	this is one half . It's a very important fraction
51:43	because we use it all the time . Now ,
51:46	you might be wondering what do the numbers mean ?
51:49	And how does it show one half ? Well ,
51:55	the bottom number shows the total number of parts .
52:01	The top number shows how many parts we are talking
52:05	about . Pretty simple . Let's go back to our
52:09	example . Mhm . There are a total of two
52:15	parts to the pizza , so there's a two on
52:18	the bottom and Cindy just gets one part , that's
52:22	the part we're talking about . So Cindy gets just
52:25	one half of the pizza , she doesn't get the
52:28	whole thing , she gets just one part , she
52:32	gets one half . The bottom number of a fraction
52:37	is called the denominator . The denominator is the total
52:41	number of parts . The top number is called the
52:48	numerator . The numerator tells us how many parts we
52:52	are talking about in this case Cindy is having one
52:57	part of the pizza , the other part of course
52:59	is going to chomsky , let's try this , let's
53:05	say there's another pizza and this pizza has four parts
53:09	. The number four is the denominator because there are
53:14	four pieces of pizza , four parts Mhm Let's say
53:22	kelly shows up and wants to have one part of
53:26	the pizza , one piece of the pizza , the
53:31	numerator or the top number of the fraction is the
53:35	number one because kelly is having one part or one
53:41	piece of the pizza kelly is having 1/4 of the
53:47	pizza . Pretty simple . Pretty fun fractions are awesome
53:53	. Yeah . Now we're going to need your help
53:57	help us figure out what fraction is it ? What
54:03	fraction is it , wow , we're gonna have a
54:06	great time . Let's say we have a group of
54:12	five sports balls . One is a basketball , the
54:16	other four are soccer balls . Let's figure out what
54:22	fraction of the balls are basketballs , What fraction of
54:28	the balls are basketballs ? So we know a fraction
54:36	has a line in the middle and the top number
54:38	is the numerator and the bottom number is the denominator
54:43	. The denominator shows us the total number of parts
54:47	or units . How many sports balls are there ?
54:52	Yeah . 5 . 5 is the denominator . Good
54:59	job . Now remember we're asking for the fraction of
55:04	sports balls that are basketball's . So how many basketballs
55:09	are there ? Yeah , just one . The number
55:16	one is the numerator . So 1/5 of the sports
55:22	balls are basketball's 1/5 . Great job . Let's try
55:29	this final example let's say there are five pets .
55:34	5 pets two of them are dogs and three of
55:38	them are cats . What fraction of the pets are
55:46	cats ? Huh ? That's a good question . What
55:49	fraction of the pets are cats ? Remember ? Here's
55:55	what a fraction looks like . It's got a line
55:57	in the middle with the top number being the numerator
56:00	. And the bottom number is the denominator . So
56:08	the total number of pets is five . What number
56:11	is the denominator ? What number goes on the bottom
56:15	? Yeah . Yeah . 5 . 5 is the
56:20	denominator . It tells us the total number of pets
56:24	. Mhm . Remember we're asking for the fraction of
56:29	the pets that are cats ? How many cats are
56:33	there ? Yeah . three . So what's the numerator
56:39	? Yeah . 33 is the numerator . 3/5 of
56:46	the pets are cats , wow that was so cool
56:54	. But none of those catcher is special to me
56:57	. As you Mr whiskers . Not even a fraction
57:00	of my heart belongs to you . My whole heart
57:03	. I love you . Mr Whiskers . I do
57:06	I do . A fraction is something that shows parts
57:12	of a whole . Mhm . The top number of
57:18	a fraction is the numerator . How many parts we
57:21	are talking about ? And the bottom number of a
57:24	fraction is the denominator . The total number of parts
57:31	. Hey petey . I know I know I heard
57:34	about your plane . You know it's a cool plane
57:36	you know and and it's it's neat . I don't
57:39	know if it flies or you you look pretty confident
57:42	that it's gonna fly which is cool . Yeah I
57:45	see you . Hello . Thanks for waving . Thanks
57:49	for saying hello . You know we're actually in the
57:51	middle of learning , we're in the middle of learning
57:53	a lot of new cool things right now . So
57:56	I actually do have to go high . You're still
57:59	waving . Okay . Um we're gonna go because now
58:03	we need to learn about division . Division is such
58:08	an awesome thing to be able to do . And
58:10	you're going to have it all figured out you're gonna
58:12	learn how to divide in this video . We're gonna
58:17	start off with the story . There's this kid named
58:19	Ethan and Ethan loves carrots , he loves carrots so
58:24	much . He loves to snack on him , he
58:27	loves when he gets to eat them . They're crunchy
58:29	, they're tasty . Yeah , carrots are awesome .
58:34	In fact , I'm literally eating a carrot right now
58:37	. As I'm speaking , carrots are great for your
58:39	skin . Carrots are great for your eyes , they're
58:41	amazing . You're a great snack . And Ethan loves
58:45	them . Well , Ethan has two friends over kevin
58:50	and Chloe and they start to get hungry . Yeah
58:55	. Mhm . Of course they all love carrots because
58:58	carrots are like the perfect snack now in Ethan is
59:02	house , there are only three carrots , they're just
59:05	three carats . We are going to have to divide
59:10	the three carats amongst the three kids . So let's
59:14	figure this out . How many carats does each kid
59:18	get , do you know ? Mhm . Uh huh
59:24	. Each kid gets one carat pretty simple , right
59:28	? Three carats , three kids . Each kid gets
59:31	one carrot . Mhm . Hey did you know we
59:35	just did division ? Uh huh . We just did
59:38	division . Division is pretty simple . You see division
59:43	is splitting a number up by any given number .
59:47	That's it . Just splitting a number up . Let's
59:52	look at our story again , There were three carrots
59:55	. And we divided those three carats by three because
60:00	there are three people . Right ? The three kids
60:03	that love carrots . And the answer of how many
60:06	carats each kid gets is 1 . 3 divided by
60:11	three equals one notice . Right ? Here is the
60:18	division sign . This is what it looks like .
60:21	When you see that sign , you could just say
60:23	divided by . So this reads three , divided by
60:27	three equals one . Let's try another example of division
60:33	. Let's say there are eight presents , eight presents
60:37	. And there are four women . And we want
60:40	each of the women to get the same amount of
60:42	presence as the other women . Because we want it
60:45	to be fair Notice the division sign we are going
60:51	to divide or split up eight x 4 . Remember
60:58	to divide us to split up . Let's split these
61:01	presents up into four equal groups . 1234 All right
61:08	. How many presents does each woman get ? Uh
61:12	huh . To each woman gets to presence . Isn't
61:20	that cool ? Division is so much fun and it's
61:22	so easy . Mhm . Mhm . Remember division is
61:26	splitting a number up by any given number ? That's
61:30	it . All right , now , it's time for
61:37	division facts . We're going to learn some pretty interesting
61:41	facts about division and you're gonna be like oh my
61:46	goodness , like secrets . This is super cool .
61:49	Okay so just look around . All right , make
61:52	sure it's clear . All right . It's time for
61:55	division facts . The first fact is this You can
62:05	never divide by zero . It's true . You can
62:08	never divide by zero . Even if you're a rule
62:11	breaker and you're like I'm gonna do whatever I want
62:14	. You still can never divide by zero . In
62:17	fact , if a teacher ever gives you a test
62:20	and you see a problem where you have to divide
62:23	a number by zero just right on the test undefined
62:27	because that's exactly what that answer would be undefined .
62:31	It's impossible . Kind of like Mr Whiskers Math skills
62:37	does Mr Whiskers do math in his head all day
62:40	long . Who knows ? His Math skills are undefined
62:43	. We just don't know . It's impossible to know
62:46	. You know Mr Whiskers might know how to do
62:48	division . Who knows ? Undefined . You can't divide
62:52	by zero , you can never divide by zero .
62:58	Mhm . If you ever see any division problem dividing
63:04	by zero just right undefined it's impossible it's impossible .
63:09	So just write undefined . The second fact is this
63:16	you can write the division sign three ways . Uh
63:20	huh . Not just with that traditional division sign you
63:24	can write it like the division sign . Or you
63:27	can write a division problem with the slash or with
63:31	a horizontal line For example look at this 12 divided
63:38	by three equals four . That's the original division sign
63:43	. The one that you might see more regularly .
63:47	Mm Yeah but here is the same equation written in
63:51	a different way . 12 divided by three equals four
63:55	. It's still a division sign but it's a slash
63:58	. It means the same thing as the original division
64:02	sign . Okay . Remember the division sign can also
64:06	be a horizontal line . 12 divided by three equals
64:11	four . That looks like a fraction , doesn't it
64:13	? The line in a fraction means divided by .
64:17	These are the three ways that you can write the
64:24	division sign . Pretty interesting . Alright . The final
64:30	fact is this okay this is so awesome . You
64:37	can flip the number of groups and the number in
64:40	each group and the division problem stays true . For
64:45	example 10 divided by two equals 5 and you can
64:49	flip the two and the five and it stays true
64:55	. Yeah that means 10 divided by five equals two
65:00	. Isn't that interesting . 10 divided by two equals
65:03	five and 10 divided by five equals two . You
65:07	can flip the number of groups and the number in
65:10	each group and it still stays true . Or look
65:14	at this 18 divided by six equals three . Remember
65:18	we can flip the number of groups and the number
65:21	in each group and it still stays true . So
65:24	we could switch the six and the three and it
65:27	stays true . Okay , So 18 divided by three
65:33	equals six . The six and the three can be
65:36	flipped . So 18 divided by six equals three and
65:40	18 divided by three equals six . Pretty nifty .
65:44	Those were some cool facts . You know , division
65:47	is a great time . Division is splitting a number
65:50	up by any given number . It's a lot of
65:53	fun . And we hope you learned a whole lot
65:56	in this video , wow , you completed the video
66:00	. That is so impressive . Well , you might
66:03	notice there's a circle right here on this video page
66:07	that you can click to subscribe to our channel ,
66:09	or you can click this rectangle to go to another
66:13	one of our videos , but keep learning . Learning
66:16	is so cool .

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