Algebra tiles!

Grade 9s worked today with algebra tiles.  We learned about what each type of tile means, and what a trinomial, binomial, and monomial are.

We learned how to add polynomials, and even made our own problems to meet criteria, like 2 trinomials that add to make a binomial.

The big key is realizing that a red and blue tile of the same shape will cancel out and make zero.