Interactive resource
Polynomial multiplication (area)
Algebra. Rectangle areas for (a + b)(c + d) = ac + ad + bc + bd. Free interactive GeoGebra resource — adjust parameters in the browser.
Overview
Rectangle areas for (a + b)(c + d) = ac + ad + bc + bd.
Explanation
Multiplication as area: (a + b)(c + d) = ac + ad + bc + bd.
Four tiles match the four terms of the expansion.
Same idea as the distributive law: multiply each pair, then add.
How to use
Adjust a, b, c, d and match each tile to a term.