Looking for resources to help geometry students find scale factors of similar shapes? Check out the FREE lesson on scale factors. I've found that students usually struggle to figure out if the scale factor is going to be smaller or larger than 1. This lesson has lots of great examples to help students find scale factors of similar triangles, rectangles, and other similar figures. There's also a printable study guide you can print off for students to fill out as they follow along with the online lesson!
Don't have access to technology in your classroom? You could also use the guided note sheet to use with whole-group instruction!