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**Objective:**

Child will understand the directionality of addition.

**Essential Question(s):**

How can we use grouping to better understand addition?

**Special Materials:**

A deck of cards without the kings, queens, and jacks; pencil and paper

**Bricks Required:**

9 1×2 bricks of two different colors, 16×16 plate

**Project Structure**

Engage/Explain:

- Prepare two kinds of small objects to count, perhaps pencils and crayons, and ask child how many objects there are all together.
- Lead the child in counting pencils and crayons, recording the results, and writing an addition sentence.
- Ask if the result would be different if the crayons were counted first; do so, writing a new addition sentence.
- Explains how addition does not change, even if done in a different order.

**Explore:**

- Hand out cards to child (at least one each of denominations 1 through 9).
- Child draws two cards from a deck, then uses two different colors of bricks to create groupings on the plate and record the equation on a piece of paper.
- Child then takes the same number of bricks in the same colors, but swaps them to create a new equation that yields the same result, recording the new equation.