Early algebra ideas about binomial expansion, Stephanie's interview four of seven, Clip 6 of 9: Explaining the algebraic and geometric representations of (a+b) squared and the algebraic expansion of (a+b) cubed.

In the sixth clip in a series of nine from the fourth of seven interviews in which 8th grader Stephanie explores Early Algebraic Ideas about Binomial Expansion, Stephanie explains her algebraic and geometric representations for (a+b) squared to researcher Carolyn Maher, three visiting researchers and Stephanie's classroom teacher. After completing this explanation, she builds on her algebraic solution for (a+b) squared to explain her algebraic expansion of (a+b) cubed. The problem as presented to Stephanie: Explain the expansion of (a+b) squared and (a+b) cubed based on your representations.Transcript and student work are also available.Robert B. Davis Institute for Learning. (1996). Early algebra ideas about binomial expansion, Stephanie's interview four of seven, Clip 6 of 9: Explaining the algebraic and geometric representations of (a+b) squared and the algebraic expansion of (a+b) cubed. [video]. Retrieved fro