4th Grade Motion Science - By
Transcript
| 00:07 | Okay , guys , we're going to get back into | |
| 00:10 | science . I know we've done some reading . Where | |
| 00:12 | is your science journal ? All science journals ? I'm | |
| 00:17 | seeing about three people without their journals on their desks | |
| 00:20 | . Okay , good , good . And I see | |
| 00:23 | those prepared . Excellent . Okay . Who can tell | |
| 00:28 | me what we have been ? Uh what unit of | |
| 00:33 | study we've started in science ? Who can tell me | |
| 00:35 | ? Yes . Motion and design . What is motion | |
| 00:41 | ? What does that mean ? Yes . It has | |
| 00:44 | like forces . It's forced . What do you mean | |
| 00:50 | ? Motion has forced ? What do you what explain | |
| 00:52 | what you're talking about ? It has like it has | |
| 00:57 | pushing and pulling . Okay , that's a force . | |
| 01:01 | Okay . What does that have to do with motion | |
| 01:08 | ? You're on the right track , buddy , boy | |
| 01:11 | . Okay . Yes . Good . Good . Good | |
| 01:14 | job . Thank you . Motion is a change of | |
| 01:17 | position . Motion is a change of position . And | |
| 01:20 | to change of position ? You need to what ? | |
| 01:24 | And what , Jackson ? You need a force . | |
| 01:28 | Of course . Good job , Good job . And | |
| 01:32 | what can cause that force . I know we've made | |
| 01:35 | some vehicles and we've made the move . What causes | |
| 01:38 | that force ? Isaiah push and pull a pusher pool | |
| 01:46 | . Okay . How do we provide that pusher pool | |
| 01:48 | that gets our vehicle going ? Remember , we can | |
| 01:52 | push it ? And like I said , just the | |
| 01:55 | vehicle , we can push it in as far rolling | |
| 01:57 | . And that's so you can use use your hand | |
| 01:59 | , your own your own force of your muscles . | |
| 02:02 | Good . How else can we get this to move | |
| 02:06 | ? What's on your mind ? Preston anything ? No | |
| 02:09 | ? Okay . Um , Yeah , we can blow | |
| 02:15 | on it and they will . Okay , so , | |
| 02:18 | so what does that do ? Good . We can | |
| 02:20 | we can win . And when does what push it | |
| 02:24 | pushes it ? Good . Good . Any other ideas | |
| 02:28 | ? You can you can touch it with your hair | |
| 02:31 | ? Is not pushing it forward . Okay . All | |
| 02:34 | right . You said kicky . Kick it . And | |
| 02:38 | what does that provide ? I uh yeah , a | |
| 02:45 | kick provides movement . It does provide movement . Is | |
| 02:51 | it a pusher pool , push a push . What's | |
| 02:54 | your what's your idea , drink , gravity , gravity | |
| 02:58 | . And what kind of force does gravity provides ? | |
| 03:02 | Sort of like a pushing like a ramp or something | |
| 03:04 | ? Could maybe does it push or does it pull | |
| 03:07 | it kind of pushes it a little bit . It | |
| 03:12 | does a little bit of both because at the beginning | |
| 03:14 | it pushes it down . But and then like but | |
| 03:18 | then after it pushes it close to the end of | |
| 03:21 | the ramp , it'll and it'll be start pulling it | |
| 03:24 | down . Okay . All right , good . Now | |
| 03:27 | , one thing I want us to think about , | |
| 03:30 | I'm gonna use this vehicle here . Okay , now | |
| 03:36 | we have done some reading . And we have we | |
| 03:38 | have used some of our reading strategies such as synthesizing | |
| 03:43 | . We've got some new ideas and one of uh | |
| 03:47 | , tell me some things you found out from our | |
| 03:49 | reading that has to do with forces in this vehicle | |
| 03:55 | remote . Uh , at first I thought if we're | |
| 03:59 | with the vehicle with the vehicle we , we can | |
| 04:03 | use , like it's just like a toy car . | |
| 04:05 | If you racing to toy cars when you push them | |
| 04:09 | , they keep going into the hit something . When | |
| 04:12 | they hit it , it stops . Okay . So | |
| 04:16 | of force provides the most it makes it go right | |
| 04:20 | . Okay . Whether it's a push or a pull | |
| 04:22 | and then until another force , like you said something | |
| 04:26 | , has it stopped or changed ? Good job , | |
| 04:29 | good job , stop or change his position . Okay | |
| 04:32 | . Good . Um , what else did we learn | |
| 04:35 | from our reading this morning ? What , what , | |
| 04:37 | what other new ideas or things that you understand ? | |
| 04:41 | Did you get from your reading ? Isabel ? I | |
| 04:45 | understood that because I , because I thought like a | |
| 04:50 | force was just anything , but it was all it | |
| 04:54 | was was a pushing pool . Okay . Okay , | |
| 04:57 | now I want you , let's look at let's look | |
| 05:01 | at this vehicle right here . Okay . We've got | |
| 05:05 | everything on here . Let's look at this vehicle right | |
| 05:08 | here . It's not going anywhere . Are their forces | |
| 05:12 | acting on this vehicle ? Because it's it's still it's | |
| 05:15 | at rest . It's not moving . So is there | |
| 05:18 | force still here ? Yes . No , no . | |
| 05:23 | Okay . Somebody has a different idea . Yes . | |
| 05:26 | Because it's forced that's still moving it . But there's | |
| 05:30 | not enough force to push it or fully . Okay | |
| 05:34 | . All right . For us , they're still forced | |
| 05:37 | there . Okay . What's your idea ? Um There's | |
| 05:41 | still force on it . But it's the equal amount | |
| 05:45 | of force , An equal amount of force . What | |
| 05:47 | does that mean ? So the equal amount of force | |
| 05:49 | . What it's keeping it from moving . Okay , | |
| 05:53 | good . It's keeping it from moving . We've got | |
| 05:56 | gravity pulling on it , we've got this table in | |
| 06:00 | this book that's that's keeping it from going anywhere . | |
| 06:03 | And the force of the air , everything is equalized | |
| 06:07 | . Um Come here ali and when we have a | |
| 06:13 | balanced force it's not going to move it's going to | |
| 06:16 | be at rest . I want you to push as | |
| 06:18 | hard as you can . Okay ? Are we moving | |
| 06:22 | now ? Well I just moved my hand but but | |
| 06:25 | I mean am I moving her hands ? She moving | |
| 06:27 | mine ? No because we're pushing we're gonna push . | |
| 06:31 | Okay now we have equal balance of forces . She | |
| 06:34 | can't move my arm back and I can't move her | |
| 06:36 | arm back because we the balance the forces are equal | |
| 06:40 | . Okay now push as hard as you can as | |
| 06:43 | far . Okay ? Okay now the balance was unequal | |
| 06:47 | she had more force on my arm . That unequal | |
| 06:50 | force forced my arm to move . Which is what | |
| 06:54 | you were doing to the vehicles when you made them | |
| 06:56 | move . Thank you , sweetheart . What we're going | |
| 06:59 | to do today is we're going to test force on | |
| 07:04 | our vehicles . We are going to use what's called | |
| 07:09 | a falling weight system to do that . Okay . | |
| 07:14 | A falling weight system . Now I want all eyes | |
| 07:19 | to follow me over here . Okay . Mhm . | |
| 07:24 | Okay . You will have would you get me in | |
| 07:26 | my vehicle please ? Or whoever's vehicle ? Okay . | |
| 07:32 | You see around the room ? We have . Thank | |
| 07:35 | you , sweetheart . We have placed our buckets and | |
| 07:41 | vehicles and some other equipment around the room . What | |
| 07:46 | I have is a piece of cardboard and it has | |
| 07:55 | some fishing line and hooks . Okay . Case you | |
| 08:00 | also have . You also have weights . Okay . | |
| 08:08 | Mm . And we have a book end . Okay | |
| 08:18 | . And we're going to get that . What I | |
| 08:20 | why would we have a book into two if we're | |
| 08:23 | trying to make our vehicle move ? What's the book | |
| 08:27 | in for ? What do you think Ethan Stop it | |
| 08:32 | to stop ? Stop what ? The vehicle ? Yeah | |
| 08:35 | . Okay . So it doesn't fall off the edge | |
| 08:38 | of our , of our desk , of our table | |
| 08:40 | , of our bookcase . Now , I also want | |
| 08:43 | you to think about um as we're as we're doing | |
| 08:46 | this , uh you're going to take the hook and | |
| 08:51 | you're going to put it against the front axle . | |
| 08:53 | Remember that front axle is not moving , It's gonna | |
| 08:56 | you're gonna hook it here and you will have the | |
| 09:04 | other end right at the edge . Okay , what | |
| 09:07 | that means ? I'm gonna hold this up , sit | |
| 09:09 | down . I'm gonna hold this up . This should | |
| 09:12 | hang like this where the top of this paper clip | |
| 09:17 | , it's just as equal flash with the book it | |
| 09:23 | . Okay . All right . Mhm . Put your | |
| 09:27 | hand down , please . Now you're going to be | |
| 09:36 | putting weights . You have little washers , 25 little | |
| 09:42 | washers in a cup and you have one large washer | |
| 09:47 | in a few minutes . We're going to be reading | |
| 09:50 | our instructions as a team . But I just kind | |
| 09:53 | of wanted to show you how this worked . Someone | |
| 09:56 | is going to be holding our vehicle while another one | |
| 10:04 | is putting on a certain number of washers . Okay | |
| 10:09 | ? Someone will be holding this holding the vehicle . | |
| 10:12 | You're going to place the washers on the hook and | |
| 10:17 | then one of you is gonna say go , you're | |
| 10:20 | going to let go and you're gonna see where how | |
| 10:22 | far travels . Okay ? You're you're going well , | |
| 10:26 | how do we know how far it travels ? I | |
| 10:28 | had you will have also a tape measure okay , | |
| 10:35 | in which you can travel a distance . You can | |
| 10:38 | use uh make sure that you mark where you where | |
| 10:42 | the back tires are so that you know how far | |
| 10:46 | it goes . Put hands down please so that you | |
| 10:49 | know how far it goes . And then you're gonna | |
| 10:54 | record in your journals and I'll show you how to | |
| 10:57 | do this . You're going to record in your journals | |
| 10:59 | what you found . You're going to keep increasing the | |
| 11:03 | weight . So I want you to think about it | |
| 11:05 | . If I have four small washers silva and I | |
| 11:10 | put it on the hook , how is the effect | |
| 11:15 | of the motion on this vehicle going to be different | |
| 11:18 | than if I had eight small washers ? How is | |
| 11:21 | that going to be different do you think mm Or | |
| 11:25 | would it be different ? Yes . It would be | |
| 11:30 | different because the um the way it is kind of | |
| 11:39 | like helping the gravity stop stop being the vehicle and | |
| 11:44 | pulling it down So it has four weight and that | |
| 11:51 | it won't it won't go farther but it has more | |
| 11:56 | ways it will stop , it will stop sooner . | |
| 12:00 | Okay . Okay so you think you think the more | |
| 12:03 | weight yeah um it'll it uh it will stop sooner | |
| 12:10 | so it doesn't go as far . So the last | |
| 12:12 | weight the further it goes . Who has another idea | |
| 12:15 | ? Ok I like your thinking Yes the more white | |
| 12:19 | it puts on the the fat the faster is gonna | |
| 12:25 | hit something because once you put the washers on there | |
| 12:31 | is gonna the paper , the hook is gonna go | |
| 12:35 | , the hook's gonna start moving in town and that's | |
| 12:40 | a part of gravity . It's gonna start moving down | |
| 12:45 | then the then our car is gonna start coming . | |
| 12:50 | Okay so what's going to have the more the more | |
| 12:53 | way to put put on there . How's that going | |
| 12:54 | to change the motion of the vehicle ? The more | |
| 12:58 | weight , the more what more faster the more speed | |
| 13:03 | , the faster you think it'll go . Okay , | |
| 13:05 | well we can see about who , who agrees with | |
| 13:08 | uh Jackson did . The more weight the faster and | |
| 13:12 | further the vehicle will go . Okay . So we | |
| 13:16 | have What about 234567 . About 10 . Who ? | |
| 13:20 | Who agrees with Jaden that the more weight uh the | |
| 13:29 | the less uh it won't go as far . Okay | |
| 13:34 | , so we're going to see , we're going to | |
| 13:37 | find out . I would like you to open up | |
| 13:41 | your journals two , page Um 13 at the bottom | |
| 13:48 | it says page 13 . Open your journals to page | |
| 13:52 | 13 . Yeah . Yeah . Okay . If you | |
| 14:05 | look on page 13 . Hello ? Nice camera's not | |
| 14:11 | working . If you look on page 13 , who | |
| 14:16 | would like to read the first part of the directions | |
| 14:18 | ? Because the first part , we've already kind of | |
| 14:20 | have for us read the first part of the directions | |
| 14:23 | , Keeley , pick up the material , Place your | |
| 14:28 | vehicle on the long flat workspace assigned to your your | |
| 14:35 | group by the teacher . Then set up the work | |
| 14:39 | space just as it is a picture . Okay . | |
| 14:43 | Now if you notice the picture , what did you | |
| 14:46 | , the picture kind of looks like what I showed | |
| 14:48 | you , isn't it ? Didn't it ? Okay . | |
| 14:50 | The picture was just like I showed you now you're | |
| 14:55 | going to you're going to read in your group . | |
| 15:00 | Yeah . The steps okay one Through uh pages 13 | |
| 15:07 | and 14 . And I want you to talk about | |
| 15:09 | you're going to read it through and then I'm going | |
| 15:13 | to assign you to your spots And you're going to | |
| 15:18 | follow these directions to complete the assignment . Now I | |
| 15:22 | want you to look on page 15 in your journal | |
| 15:26 | . Look on page 15 in your journal . Okay | |
| 15:31 | , This is your recording sheet . Page 15 in | |
| 15:36 | your journal is your recording sheet . And I want | |
| 15:39 | you to look carefully at this recording sheet . Now | |
| 15:43 | if you notice the recording sheet , what is it | |
| 15:46 | ? We're recording how our vehicle moves and we have | |
| 15:50 | three columns , one column . It says number and | |
| 15:54 | size of washers . So it's giving you how many | |
| 15:58 | washers you're going to use and what size you're going | |
| 16:03 | to use . Okay in the middle you have a | |
| 16:06 | larger space . That's observations about how the vehicle moved | |
| 16:13 | . You're gonna write down what you see , You're | |
| 16:14 | gonna talk about it , write it down . Each | |
| 16:16 | one of you will be writing it down in , | |
| 16:19 | one person from your group will be sharing out once | |
| 16:23 | we're finished . Okay Now I want you to look | |
| 16:27 | at this 1st 1 with one small washer because you | |
| 16:31 | don't have to use one small washer . This is | |
| 16:33 | already showing it to you . It says who would | |
| 16:37 | like to read what the fourth grade observer wrote in | |
| 16:41 | that in that uh area . There was only a | |
| 16:47 | small 4th . pulling the car . Yeah . First | |
| 16:54 | it wouldn't start start moving , then it moves very | |
| 17:01 | slow . Okay ? So that's one thing if if | |
| 17:06 | you find that it's not moving okay , don't give | |
| 17:11 | it a push , but you can one finger touch | |
| 17:16 | the back axle and see if that helps . Okay | |
| 17:21 | ? Okay . Just give it a touch . Don't | |
| 17:23 | push it because you wouldn't get a true reading . | |
| 17:27 | Okay ? So you're gonna . Yes , I have | |
| 17:30 | a question . Yes . Um As you set it | |
| 17:33 | up , like you set it up just like it | |
| 17:36 | but you ain't I don't I don't know . How | |
| 17:38 | do you when you pull it back , how do | |
| 17:40 | you do it ? What do you mean when you | |
| 17:42 | pull it ? Like how do you possibly let it | |
| 17:44 | go ? You pull it , you just let it | |
| 17:46 | , you put the washers on , you , let | |
| 17:48 | it go and see if that will pull pull the | |
| 17:50 | vehicle and see how far and how fast it'll go | |
| 17:53 | . We're going to see what it does is it | |
| 17:56 | changes . No , the string . Come , come | |
| 18:03 | here , uh Ramon , the string is pulled tie | |
| 18:11 | . Okay ? Now I don't have anything on here | |
| 18:14 | , so there's nothing pooling really . This okay , | |
| 18:18 | The vehicle . Okay , So no someone's holding it | |
| 18:23 | once , once , once you put however many washers | |
| 18:26 | you're gonna put on here , whatever it says , | |
| 18:29 | then you're going to let it go , and then | |
| 18:34 | you're going to see how far and how fast it | |
| 18:37 | will go . With however many washers you put on | |
| 18:40 | there , Whether it's 4 8 , 16 or 20 | |
| 18:45 | . Okay ? Okay . then you're observing , you're | |
| 18:50 | watching and you're recording what you're observing , you're going | |
| 18:55 | to do that with two small washers , four small | |
| 18:59 | washers , eight small washers , 16 small washers . | |
| 19:04 | Or if you don't want to use 16 small washers | |
| 19:07 | , you use one large washer . Okay . And | |
| 19:12 | each one of you has one of those . Once | |
| 19:15 | you have done your observations then you're going to rank | |
| 19:21 | the speed , you're going to look and see which | |
| 19:24 | one was the slowest And you're going to give it | |
| 19:30 | a number , value of one . Your next slowest | |
| 19:33 | is too On up to five . What number is | |
| 19:38 | going to be your fastest five ? So each one | |
| 19:43 | will have a different number from 1-5 . Your slowest | |
| 19:47 | to your fastest . Okay . We're going to start | |
| 19:52 | with the reading of the instructions . Please turn back | |
| 19:57 | to page 13 . Yes mm . Um when when | |
| 20:04 | we're doing their own rankings . Um uh let's listen | |
| 20:11 | . It might be your question . If they go | |
| 20:14 | a certain speed and half of that speed , like | |
| 20:18 | , like 1.5 can we like put One and then | |
| 20:24 | the fraction 1 ? Well you're not you're not gonna | |
| 20:26 | rank them until you've looked looked at all of them | |
| 20:29 | . Okay . Until you've done all the testing and | |
| 20:33 | then it's only gonna be 12345 Okay ? You can | |
| 20:37 | state that um four small washers went twice as fast | |
| 20:44 | or twice as slow as too small washers . Okay | |
| 20:49 | . And you that would be part of your observation | |
| 20:52 | . That's what you're writing down . That's an excellent | |
| 20:54 | question . Another question . No . Yes . No | |
| 21:00 | , you're fine . Uh huh . What happens if | |
| 21:05 | it's like , like the car fault ? Because to | |
| 21:08 | me uh why are you telling me ? Well then | |
| 21:12 | you just pick it back up and put it back | |
| 21:14 | up there . It's a car falls , it falls | |
| 21:16 | , okay . That's okay . All right . Uh | |
| 21:19 | sit down and I'm going to give you a few | |
| 21:22 | minutes to read , y'all can take turns reading instructions | |
| 21:26 | and let's go each group . Okay ? No , | |
| 21:33 | no , I said you don't leave until this is | |
| 21:35 | done . Okay . Alright way sending . I can't | |
| 21:44 | pronounce it by a way . A signing each triangle | |
| 21:51 | number from 1 to 5 . Trial a number from | |
| 21:57 | one to wait five being the way pull the vehicle | |
| 22:03 | weight pulls the way you guys have any questions about | |
| 22:14 | what you need to do . Are you ready to | |
| 22:16 | start ? Okay ? What's your question ? Okay , | |
| 22:22 | when they wake the activity , that means you do | |
| 22:27 | it again . Okay . When you know when they | |
| 22:31 | were like deciding that they thought the vehicle was going | |
| 22:34 | to go like , like faster or slower ? I | |
| 22:37 | got out my old prediction . I think it's going | |
| 22:39 | to go faster , but it's going to go backwards | |
| 22:42 | because the way it's gonna be pulling it down and | |
| 22:44 | then the line on its gonna be pulling it forward | |
| 22:47 | which is going backwards . You let me know how | |
| 22:49 | your prediction goes . Okay . Now remember you're following | |
| 22:53 | how many of these ? Because you're going to start | |
| 22:55 | with two . All right . You ready ? Do | |
| 23:00 | you agree with the way ? Alright , well , | |
| 23:10 | that's it . Not yet . Not yet . Okay | |
| 23:14 | , let's start . Okay . Okay . Have you | |
| 23:19 | guys finished you're reading do you think you're ready ? | |
| 23:22 | Okay . Uh , you've got four . It's okay | |
| 23:31 | . You're just gonna put your name . Okay . | |
| 23:33 | And I know what group you're in because you're all | |
| 23:35 | right here . Okay , Now you have your supplies | |
| 23:42 | here and you're going to just use use but you're | |
| 23:45 | going to use like , um I think your two | |
| 23:49 | deaths are the most even and you're going to pull | |
| 23:51 | these together these three together . Okay . And you're | |
| 23:55 | gonna set it up here . This is the stuff | |
| 23:58 | if you have trouble setting it up , you let | |
| 23:59 | me know . You should have . Yeah . Do | |
| 24:01 | you have a tape measure over there too ? Okay | |
| 24:04 | . Alright . Okay . You're gonna put these together | |
| 24:07 | and this is gonna be your uh this is gonna | |
| 24:12 | be your place to do your , you're going to | |
| 24:15 | use these three . You don't need to pull that | |
| 24:17 | all the way out . You just need to not | |
| 24:18 | have it on top of it . Uh You don't | |
| 24:23 | need to Okay . Yes , you can start you | |
| 24:27 | four . Come over here . You for going to | |
| 24:31 | use this table here . Uh Okay . You know | |
| 24:36 | a tape measure ? Look in the blue crate in | |
| 24:40 | one of the buckets and it's in there . Okay | |
| 24:43 | ? You're gonna have to it's gotta go off this | |
| 24:45 | way . Okay ? So your vehicle is gonna have | |
| 24:48 | to go face , where do you think it's going | |
| 24:50 | to have to face so that this can pull it | |
| 24:52 | down ? Can I pull it down anywhere here ? | |
| 24:55 | No . What are you gonna have to do ? | |
| 24:57 | There you go . There you go . So this | |
| 25:00 | should go where where should this go ? There you | |
| 25:04 | go , Okay , you cook it onto the axle | |
| 25:09 | . You done writing 15 cm . Okay ? Where | |
| 25:28 | do I put it again ? Let's just about 60 | |
| 25:52 | 69 . Hey Summer , recording what they saw ? | |
| 26:04 | Excellent . Did you record what you saw way ? | |
| 26:11 | Okay now I got to know you pull it way | |
| 26:18 | . You let it go . Just let it go | |
| 26:20 | . Let it go way . Wait , you can | |
| 26:46 | wait . What technical difficulties are you having ? After | |
| 27:52 | we did everyone know each time you're supposed to write | |
| 27:55 | your observations , right ? Your observations after each one | |
| 28:00 | . Okay . Right . Your observations do not do | |
| 28:04 | not do the speed . Okay , erase the speed | |
| 28:07 | . That no , you can't do that until you've | |
| 28:09 | written all your observations . Okay . I believe that | |
| 28:15 | was in my directions . It was in these directions | |
| 28:17 | that you read way , way , way , way | |
| 29:44 | 4321 , freeze . Right , okay . Listen to | |
| 29:57 | all instructions carefully . When I say go On a | |
| 30:06 | # one voice , you are going to put the | |
| 30:13 | tape that's right in your bucket , your vehicle , | |
| 30:18 | in your bucket . You're going to take the cardboard | |
| 30:22 | that you got and the string and you're going to | |
| 30:25 | wrap it back around so it does not get nodded | |
| 30:29 | . Okay ? And you're going to sit your bucket | |
| 30:34 | with your vehicle and your a cup of your cup | |
| 30:40 | of uh washers . Uh Well I just spilled it | |
| 30:44 | your cup of washers with your equipment without doing what | |
| 30:48 | I did , spilling it all over the place . | |
| 30:51 | Now those who have their buckets at the tape Listen | |
| 30:55 | , I did not say go , did you hear | |
| 30:56 | me say go , no . The ones that have | |
| 31:00 | their buckets on the table when you have your equipment | |
| 31:06 | together , you're going to take your equipment , put | |
| 31:10 | it together on the back table over there . Go | |
| 31:20 | I'm seeing some good clean up over here . Working | |
| 31:40 | together . Well , mm . |
Summarizer
DESCRIPTION:
4th grade science lesson on motion.
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4th Grade Motion Science is a free educational video by .
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