"Physics for Chemistry" is a horror subject in Linz for chemistry students. When i started "Tutorium: Physics for Chemistry", the Inclined Plane was difficult to explain.
I use different chalk coulors on the blackboard for better visibility of the different Forces and Components on the plane.
The first step was to create overheadsheets for the Inclined Plane.
It was useful, but static. I dreamt of something interactive for demonstration.
http://grundlagenexphys.pbworks.com/w/page/41074523/stee_schiefe_ebene
was the result. It leads to the formulas in a few steps.