Math Teachers ~ You'll LOVE this GCF Greatest Common Factor Smartboard Slides Lesson with Word Problems! It has EVERYTHING you need to teach GCF using the Slide Method, Rainbow, T-Chart, and List Methods. Lots of great interactive practice for students. You'll use this year after year! WARNING: You MUST have SMART Technologies SMART software, and a SMARTBOARD to teach from, to effectively download, open and use this Interactive Smartboard Lesson. Go to https://legacy.smarttech.com/en/products/ed