Hands-On tool for students learning geometric optics. Students can learn how concave, convex and mirror lenses refract rays of light. Students will also be introduced to a handful of equations necessary to compute focal length, magnification and more. Topics like refraction and paraxial ray tracing are covered in short lessons. Quizzes are given at the end of these lessons which can be used to gauge student's understanding of the material. There is also a sandbox environment in which students can use to experiment with different lenses and indexes of refraction. This is a supplement tool for optic courses, it does not provides a complete education on its own.