From teacher developer extraordinaire Griff Jones comes this simple hand-held laser kit which, with our laser pointer and your voice or boom box, allows you to create laser light patterns demonstrating multiple concepts of sound, light and vision. Make physics coherent with this high-energy sensory experience. Includes instructions. Requires laser pointer, not included. Grades 4–12. Size: 53.3 x 5.1 x 12.7cm.