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Area and Perimeter - Khan Academy
By Khan Academy
Start by learning how to calculate the perimeter and area of squares, rectangles, and triangles. Note the explanation of why perimeter measurements are in meters and area measurements are in square meters.
Word Problem Involving Perimeter of a Triangle - ex 2
By PatrickJMT
YouTube presents Word Problem Involving Perimeter of a Triangle - ex 2, an educational video resource on math.
Word Problem Involving the Perimeter of a Rectangle – Ex 1
By PatrickJMT
YouTube presents Word Problem Involving the Perimeter of a Rectangle, an educational video resource on math.
[4.MD.3-1.0] Area and Perimeter - Common Core Standard
By Freckle education
Apply the area formula for rectangles in real world and mathematical problems
[4.MD.3-2.0] Area and Perimeter - Common Core Standard
By Freckle education
Apply the perimeter formula for rectangles in real world and mathematical problems
Volume of a sphere | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
"Find the volume of a sphere with a diameter of 14cm." Sal Khan solves this problem during this video clip.
Area and perimeter problems - rectangular shapes - 3rd/4th grade math
By Math Mammoth
After reminding everyone about what is AREA and what is PERIMETER, we solve several problems involving both area and perimeter of rectangles or rectangular shapes.
Labeling parts of a circle | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Learn more: http://www.khanacademy.org/video?v=04N79tItPEA u07_l2_t3_we1 Parts of a Circle Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
Interesting perimeter and area problems | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
problems involving perimeter and area
Perimeter and area: the basics | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
perimeter and area.
Triangle inequality theorem | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Salman Khan offers his intuition behind the triangle inequality theorem during this six-minute video lesson.
Grade 3 Math Perimeter 3 MD 8
By EngageNY
Solve real world problems involving perimeters of polygons, including finding the perimeter given the side lengths and finding an unknown side length
Finding perimeter when a side length is missing | Math | 3rd grade | Khan Academy
By Khan Academy
Lindsay finds the perimeter of a figure when a side length is not given.
Basics of Area Perimeter and Volume of Rectangular Shapes.
By tecmath
This is a basic lesson in working out the perimeter area or volume or rectangular shapes. A house plan is used to show how to find the perimeter of a rectangle. Examples are shown for formulas of perimeter and area.
Grade 3 Math - Perimeter 1
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.
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Perimeter of a shape
By Khan Academy
Find perimeter of various shapes.������������
3rd Grade Math Rap
By McCarthy Math Academy
With a little help from the group, Mindless Behavior, I have created a math video with lyrics to help my students to understand and apply core math skills for third grade. People of all ages can jam out to this one. Enjoy!
I've got a case of the operation blues.
Because I don't know which one I should use.
Look at the word problem for the clues.
The key words tell you how to choose.
Each means you multiply or you must divide.
Tryna find the total? Then you multiply
Total's in the problem? Then you must divide.
Not quick to solve it, draw it, get it right.
Addition's easy for me and you
Sum, In all, together, and total too.
When do you subtract? How many more?
Fewer? Left? Less? Difference in a score?
Place value's next. Disco on the " dess "
Ones, tens, hundreds, to the left
Thousands, Ten thousands, hundred...thousand
Say the name of the place, yeah.
The value's the amount of the place
For example, 2,060.
The value of the 2 is 2-0-0-0,
The value of the 6 is 6-0.
When you round, find and underline the place
Spotlight to the right, decide the digit's fate
5 or more, add 1 to the rounding place
4 or less, do nothing but walk away, (estimate)
A pen, penny is one, one cent
A Nic-kel is five, a dime is ten cents
25 for a quarter, George Washington
100 cents makes a dollar, there he goes again.
For pictographs, you gotta check out the key
One smiley face might really equal three
For bar graphs, pay attention to the scale
Think it's counting by ones, huh, you'll fail
Fractions are easy, just draw your best.
Here they go from least to greatest
1/12, 1/6, ¼, 1/3,
½, 2/3, ¾, Fraction nerd!
You see that number on top,
That's called the numerator
It describes the amount
That is being considered
And if you jump down from the fraction bar
Denominator
It's the total number of equal parts.
Let me give you an example:
Leslie Moin has some coins
A total of 9
2 happen to be pennies
While 7 are dimes.
What's the fraction of dimes?
How many coins? 9
How many dimes? 7
Say the fraction -- seven ninths
Length times width is Area
Distance around is Perimeter
Break down the GEOMETRY
3 sides makes triangle
4 sides = quadrilateral
5 pentagon, 6 hexagon
8 octagon, 10 decagon
Lines that never cross - PARALLEL
Lines that meet or cross - INTERSECTING
Lines that form right angles -- PERPENDICULAR
Same shape, same size -- CONGRUENT
Line that cuts in half - SYMMETRY
Up and Down - VERTICAL
Left to Right -- HORIZONTAL
An angle less than right - ACUTE
An angle opened wide - OBTUSE
Ninety degrees square corner - RIGHT ANGLE
Back to triangles
3 sides the same = equilateral
2 sides the same = isosceles
no sides the same = Hey, that's a scalene right!
So, that's it.
That's our math song.
Before we leave,
Remember to read
Your math problems three times before you answer.
That way you know what the problem
Is asking you to do.
Don't be lazy, be brilliant.
Piece! Like a fraction.