### Now Playing: MP4-1

### Citation & Export

#### APA citation

**Early algebra ideas about binomial expansion, Stephanie's interview seven of seven, Clip 2 of 7: Generating Unifix-cube towers 4-tall from exactly two to exactly three red cubes and from exactly three yellow cubes to the tower with all four yellow cubes. [video]**Retrieved from https://doi.org/doi:10.7282/T34J0CXH