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# Bricks… They’re Multiplyin’

## Explore the basics of multiplication and the communiative property with bricks.

Objective:
Child will understand the commutative property of multiplication.

Essential Question(s):
How does multiplication work? Is there a direction, or can it be flipped around?

Special Materials:
Paper and pencil for recording data

Bricks Required:
16×16 plates, 2×2 or 1×1 bricks

Project Structure

Engage/Explore:

1. Distribute one 16×16 plate and 24 2×2 or 1×1 bricks.
2. Ask child to lay out a row of 4 bricks on the plate, then add 2 more equal rows.
3. Have child create a multiplication sentence based on their brick outlay.
4. Child then rotates their plates 90 degrees. Ask them to create a new multiplication sentence based on the new orientation.
5. Ask child to solve both multiplication sentences on a sheet of paper.

Explain:

1. Ask child: if they were to do the problems backwards, would they get the same answers?
2. Why or why not?
3. Child should test their reasoning on a few problems and explain (commutative property).
4. Ask the child to lay out 1 more row of bricks (at this point it should be

### Credits

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