Are your students having trouble with quadratics?
Well, here is the answer to that problem. The first chart shows that there are essentially four types of factorable trinomials. Many students struggle with assigning signs to binomial factors and this approach lists four types for students to memorize. The second chart shows the modified-AC method for teaching. This is very helpful for teaching factoring when a > 1, and eliminates the use of the “guess and check” method. Your students will love this concrete approach to factoring quadratics!