Display the image pictured in the sidebar, Rectangles, to children. Encourage children to tell a story about the figures. The sample responses are deliberately broader than what a class is likely to produce in any session.
Possible student responses
I see four figures.
I see a square and three rectangles.
One of the figures looks crooked.
All the figures have four sides.
They all have four corners.
All four shapes are rectangles.
The first one is tall and skinny.
A number sentence I could write for this picture is 3 + 1 = 4 (3 non-squares and 1 square make 4 rectangles).