A fun paper craft, a painless lesson in symmetry and mathematics, an easy way to introduce a pop of color, and an excuse to say the word dodecahedron. What's not to love about this DIY garland comprised of Platonic solids.
Area of Trapezoid - "We started with a trapezoid cut out that I provided to all my students. I told them that triangles and trapezoids were related. Using one line, can you figure out how and draw it? Gotta admit... it stumped some them... And on a side note.... didn't I learn all this in 10th grade Geometry???? When did 10th grade become 6th grade math!??!?!" (Why, yes, yes you did. When? When legislators started deciding what we needed to teach at what age.)