3rd grade area and perimeter videos
Quick answer
In 3rd grade (ages 8–9), children measure area with unit squares, multiply side lengths to find the area of rectangles and add sides to find perimeter. Lessons from Math with Mr. J, Math Antics "Area" and "Perimeter" and Learn Bright, ending with a Numberock song. Play all on repeat, or loop one example.
Videos in this playlist
- 1
An Intro to Area | Math with Mr. JMath with Mr. JPlay from here Loop - 2
How to Calculate Area | Learn how to calculate area and apply it in the real worldLearn BrightPlay from here Loop - 3
Math Antics - AreamathanticsPlay from here Loop - 4
Finding Area by Counting Unit Squares | Math with Mr. JMath with Mr. JPlay from here Loop - 5
Finding Area By Tiling | Math with Mr. JMath with Mr. JPlay from here Loop - 6
Relating Area to Addition and Multiplication | Area of Rectangles | Math with Mr. JMath with Mr. JPlay from here Loop - 7
Multiplying Side Lengths to Find the Area of a Rectangle | Math with Mr. JMath with Mr. JPlay from here Loop - 8
How to Find the Area of a Rectangle | Math with Mr. JMath with Mr. JPlay from here Loop - 9
Finding Area Using the Distributive Property | Area of Rectangles | Math with Mr. JMath with Mr. JPlay from here Loop - 10
Finding the Area of a Composite Figure | An Intro for Elementary Students | Math with Mr. JMath with Mr. JPlay from here Loop - 11
How to Find the Area of a Composite Shape | L-Shaped Example | Math with Mr. JMath with Mr. JPlay from here Loop - 12
How to Calculate Perimeter | Calculating Perimeter is easy! Learn how with real world examples.Learn BrightPlay from here Loop - 13
Math Antics - PerimetermathanticsPlay from here Loop - 14
Finding Perimeter by Counting Units | Math with Mr. JMath with Mr. JPlay from here Loop - 15
Finding Perimeter Using Grids | Math with Mr. JMath with Mr. JPlay from here Loop - 16
Finding the Perimeter | How to Find Perimeter for Elementary StudentsMath with Mr. JPlay from here Loop - 17
How to Find Perimeter | Math with Mr. JMath with Mr. JPlay from here Loop - 18
Finding the Perimeter of Composite Figures by Counting Units | Math with Mr. JMath with Mr. JPlay from here Loop - 19
Perimeter of Composite Shapes | Finding the Perimeter of a Composite Shape for Elementary StudentsMath with Mr. JPlay from here Loop - 20
Finding a Missing Side Length Given the Perimeter | Math with Mr. JMath with Mr. JPlay from here Loop - 21
How to Find the Perimeter of a Composite Shape | Missing Side Lengths | Math with Mr. JMath with Mr. JPlay from here Loop - 22
Area and Perimeter Song For Kids | 3rd - 4th GradeNumberockPlay from here Loop
What does this 3rd grade area and perimeter unit cover?
It introduces area as the number of square units inside a shape, then tiling, multiplying length by width, the distributive property with area, and simple composite shapes. Perimeter covers counting units, adding side lengths and finding a missing side. A child should tell area and perimeter apart.
How does RepeatWatch help with area and perimeter?
Loop one worked example from A to B while your child copies it onto grid paper. Use 0.75× for a new method, save area and perimeter lessons on keys 1–9, put the Numberock song on Repeat one, and use Stop after N loops.
Frequently asked questions
What is the difference between area and perimeter?
Area is the space inside a shape, measured in square units. Perimeter is the distance around the outside, measured in units of length. A 3 by 4 rectangle has an area of 12 square units and a perimeter of 14 units.
When do children learn area and perimeter?
In the US, both are usually introduced in 3rd grade (ages 8–9) with rectangles and grids. Area of triangles and other shapes comes in later grades. Grade levels vary by country and school.