Are you teaching factoring to a lower level math class or perhaps younger group of students? While factoring itself can be easy I have found that certain classes of mine have trouble with signs. The higher level students are pretty good with using mental math and trial and error but this process tends to frustrate other learners. Enclosed you will find two different versions of a reference chart that will allow students to determine the signs for factoring a very basic trinomial. These charts can be printed and photocopied front-to-back for easy reference. I have also included a worksheet with practice problems so that your students can practice using the charts. An answer key is included at the end.
If you find this chart helpful I would appreciate any feedback you would be willing to leave.
Factoring Trinomials Reference Chart
by Dana Burrows
is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License