Designed specifically for use on your overhead projector. Demonstrate wave concepts or supplement individual student work with ripple tanks. All the wave basics—pulses, reflections, traveling waves, waves and obstacles, and interference patterns are clearly shown. Perfect for student presentations or for practical classroom quiz sessions. Comes complete with wave tray, concave parabolic reflector, convex parabolic reflector, a two-point wave source, a multi-point wave source, foam beaches and complete instructions.