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.

Play all on repeat

Videos in this playlist

  1. 1An Intro to Area | Math with Mr. JAn Intro to Area | Math with Mr. JMath with Mr. JPlay from here Loop
  2. 2How to Calculate Area | Learn how to calculate area and apply it in the real worldHow to Calculate Area | Learn how to calculate area and apply it in the real worldLearn BrightPlay from here Loop
  3. 3Math Antics - AreaMath Antics - AreamathanticsPlay from here Loop
  4. 4Finding Area by Counting Unit Squares | Math with Mr. JFinding Area by Counting Unit Squares | Math with Mr. JMath with Mr. JPlay from here Loop
  5. 5Finding Area By Tiling | Math with Mr. JFinding Area By Tiling | Math with Mr. JMath with Mr. JPlay from here Loop
  6. 6Relating Area to Addition and Multiplication | Area of Rectangles | Math with Mr. JRelating Area to Addition and Multiplication | Area of Rectangles | Math with Mr. JMath with Mr. JPlay from here Loop
  7. 7Multiplying Side Lengths to Find the Area of a Rectangle | Math with Mr. JMultiplying Side Lengths to Find the Area of a Rectangle | Math with Mr. JMath with Mr. JPlay from here Loop
  8. 8How to Find the Area of a Rectangle | Math with Mr. JHow to Find the Area of a Rectangle | Math with Mr. JMath with Mr. JPlay from here Loop
  9. 9Finding Area Using the Distributive Property | Area of Rectangles | Math with Mr. JFinding Area Using the Distributive Property | Area of Rectangles | Math with Mr. JMath with Mr. JPlay from here Loop
  10. 10Finding the Area of a Composite Figure | An Intro for Elementary Students | Math with Mr. JFinding the Area of a Composite Figure | An Intro for Elementary Students | Math with Mr. JMath with Mr. JPlay from here Loop
  11. 11How to Find the Area of a Composite Shape | L-Shaped Example | Math with Mr. JHow to Find the Area of a Composite Shape | L-Shaped Example | Math with Mr. JMath with Mr. JPlay from here Loop
  12. 12How to Calculate Perimeter | Calculating Perimeter is easy! Learn how with real world examples.How to Calculate Perimeter | Calculating Perimeter is easy! Learn how with real world examples.Learn BrightPlay from here Loop
  13. 13Math Antics - PerimeterMath Antics - PerimetermathanticsPlay from here Loop
  14. 14Finding Perimeter by Counting Units | Math with Mr. JFinding Perimeter by Counting Units | Math with Mr. JMath with Mr. JPlay from here Loop
  15. 15Finding Perimeter Using Grids | Math with Mr. JFinding Perimeter Using Grids | Math with Mr. JMath with Mr. JPlay from here Loop
  16. 16Finding the Perimeter | How to Find Perimeter for Elementary StudentsFinding the Perimeter | How to Find Perimeter for Elementary StudentsMath with Mr. JPlay from here Loop
  17. 17How to Find Perimeter | Math with Mr. JHow to Find Perimeter | Math with Mr. JMath with Mr. JPlay from here Loop
  18. 18Finding the Perimeter of Composite Figures by Counting Units | Math with Mr. JFinding the Perimeter of Composite Figures by Counting Units | Math with Mr. JMath with Mr. JPlay from here Loop
  19. 19Perimeter of Composite Shapes | Finding the Perimeter of a Composite Shape for Elementary StudentsPerimeter of Composite Shapes | Finding the Perimeter of a Composite Shape for Elementary StudentsMath with Mr. JPlay from here Loop
  20. 20Finding a Missing Side Length Given the Perimeter | Math with Mr. JFinding a Missing Side Length Given the Perimeter | Math with Mr. JMath with Mr. JPlay from here Loop
  21. 21How to Find the Perimeter of a Composite Shape | Missing Side Lengths | Math with Mr. JHow to Find the Perimeter of a Composite Shape | Missing Side Lengths | Math with Mr. JMath with Mr. JPlay from here Loop
  22. 22Area and Perimeter Song For Kids | 3rd - 4th GradeArea 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.