Lesson: Sides of 2D Shapes Elementary School Mathematics 1st Grade

Mathematics

In this lesson, we will learn how to identify and count the sides of 2D shapes.

Video

09:37

Q1:

Emma has built a triangle by sticking 3 sticks into 3 clay balls.

Can I build a square with these?

Q2:

Jacob has built a square with 4 sticks.

How many sticks does he need to build a triangle?

Q3:

Which shape can I build with these 5 sticks?

Preview Download