Grade
3

Same & Different: Broken Rectangles

Look at the two pictures. What do you notice?

A: a geoboard with a purple rectangle of 8 by 5, a yellow rectangle of 8 by 5, and a red rectangle of 8 by 2. B: Number pieces make an array of 12 row and 8 columns with 10 rows yellow and 2 rows green.
  1. How are pictures A and B mathematically the same, and how are they different?
    • A and B are the same because …
    • A and B are different because …
  2. Make a third picture that shows a product. Explain how your picture is the same as pictures A and B, and how it is different.
Printable Version

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Reference for Educators

Sample problems and solutions