Oh Christmas Tree: Slope Edition. This is a good tool to remember the different types of slope. I would have my students make these after we learned it in class as an activity to keep in their notebook. Rate of Change/Slope
It adds more rigor if students create their own equations and develop their own design. Have students create a certain number of each type of line, have them identify slope, y-intercept, etc. to cover more of what I am teaching on the concept.
Cutting Conics: Students explore and discover conic sections by cutting a cone with a plane. Circles, ellipses, parabolas, and hyperbolas are examined using the Conic Section Explorer tool. Physical manipulatives such as dough can optionally be used as well.