This is a digital check your understanding made with Google Sheets. Each correct answer turns green and incorrect answers turn red, which allows students to fix any mistakes and try again. The format is based off the CYUs from "Building Thinking Classrooms in Mathematics" by Peter Liljedahl.

There are 3 different levels that build in intensity: Mild, Medium, and Hot. Students have the option of completing problems from whichever section they choose.

Please reach out if you have any questions or concerns about this resource! Thanks!