Instructional Video4:37
Curated Video

Finding the Perimeter of Polygons with More than Four Sides

K - 5th
In this video, students are taught how to find the perimeter of polygons with more than four sides by adding the side lengths. The teacher emphasizes the difference between perimeter and area, and highlights common mistakes students...
Instructional Video6:34
Curated Video

Using the Area of Squares Proof to Relate Side Lengths of a Right Triangle

K - 5th
In this lesson, students will learn about the relationship between the side lengths of a right triangle using the area of squares proof. They will understand that the sum of the areas of the squares formed by the two legs of a right...
Instructional Video
Imagine Learning Classroom

Learn Zillion: Find Area by Counting Square Units

3rd Standards
In this lesson, you will find the area of a complex shape by counting the square units. Login gives access to a slideshow as well. [4:17]