Lesson: Sides of 2D Shapes Mathematics • 1st Grade

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

Lesson Video

Q1:

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

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?

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