Light It Up
This interactive was made for the NCTM Illuminations activity 'Light It Up' from http://illuminations.nctm.org/Lesson.aspx?id=1968 Set the mirror position and laser height. Then collect data for how high the spot on the wall is (output) for how far from the wall you're standing (input). Can you find a function rule for this input/output?
Hint: the lesson suggests y =a+b/(x-c) for a rule form. More GeoGebra at bit.ly/mh-ggb revised from John Golden to fix objects such as the wall.