Students place two plane mirrors at different angles to experiment with reflection. They make kaleidoscopes and periscopes.

Students experiment with reflections of two plane mirrors placed at a 90 degree angle to see what will be reflected.

Students investigate the law of reflection by using mirrors. For this physics lesson, students operate a robot using IR controllers. They explain the path of light as it reflects through a surface.

Ninth graders study optics and the law of reflection.  In this optical images lesson students use a laser and conceptualize the law of reflection.

Students identify and construct figures that tessellate. They investigate which regular polygons tessellate and how to modify them to make other tessellating figures. Students explore how naturally occurring tessellations have been...