Scaffolding geometric transformations can be extremely beneficial if you have students who are currently struggling with on-grade level math.
Start off with students identifying which transformations are which. I use these “slang” terms to help students better understand the academic vocabulary.
Translation – Slide
Reflection – Flip
Rotation – Turn
Dilation – Large and Tiny
Start off with a single point on a 1 quadrant graph, doing a single movement. Add two movements, 4 quadrant graphs, then shapes. Create the algebraic rule by looking at the coordinates.
Practice identifying reflections over the x-axis versus the y-axis. Use mirrors, tracing paper, and counting spaces from the line of reflection.
Do not be like me and wait four years before using tracing paper when teaching rotations. It is a life saver and makes teaching them so much easier.
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