Exchange pieces exactly
Replace two squares by a matching rectangle. Explore a model, explain the relationship, and try it with physical materials.
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Replace two squares by a matching rectangle. Explore a model, explain the relationship, and try it with physical materials.
Identify and explain one uncovered unit. Explore a model, explain the relationship, and try it with physical materials.
Find multiple coverings of a three-cell L shape. Explore a model, explain the relationship, and try it with physical materials.
Organize unit squares in two directions. Explore a model, explain the relationship, and try it with physical materials.
Compare different connected designs using the same number of cells. Explore a model, explain the relationship, and try it with physical materials.
Keep the row and mirrored distance for a single cell. Explore a model, explain the relationship, and try it with physical materials.
Coordinate two reflected positions with adult support. Explore a model, explain the relationship, and try it with physical materials.
Explain why the piece count and covered unit count differ. Explore a model, explain the relationship, and try it with physical materials.
Cover an area with identical square units without overlap. Explore a model, explain the relationship, and try it with physical materials.
Identify an invariant piece through a quarter turn. Explore a model, explain the relationship, and try it with physical materials.
Justify equal coverage made from different piece collections. Explore a model, explain the relationship, and try it with physical materials.
Use a systematic scan to find missing coverage. Explore a model, explain the relationship, and try it with physical materials.