Counting Shapes was created by middle school students Jose H. and Chris C. from Tulare City Schools. In this book, students learn to count from 1 to 5 with simple shapes. The book incorporates ...

Let’s look at the number of sides and vertices that some 2D shapes have. Here is a triangle. Can you count the number of sides and vertices? A triangle has 3 sides and 3 vertices. Now let’s ...

Area is the amount of space taken up by a flat shape and is calculated by counting the square units inside it; almost like the tiles on a floor. For example, if we can repeatedly fit a square with ...