Someone responded that she sometimes used manipulatives like Algeblocks but they did not seem to help here. We stared at the blocks. There was a clatter of plastic, and pairs began their constructions. X 3 -1 could be viewed as a cube with one block removed. There were many responses.
Factors are parts of numbers.
They are related to addition, or rather addition a multiple number of times. The Concord Consortium, All rights reserved.