Our unit on Quadratics is probably my favorite unit to teach. There is so much growth! One of the topics we cover in our Quadratics unit is differences of squares. I love looking at concepts through pictures (Have you seen the post Pythagorean Theorem Proof Without Words from Mrs. E Teaches Math? It's awesome.) The format of a factored difference of squares seems so simple, but I find that giving it context through pictures helps the concept sink in.

Here we have a square with side length x.