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.