Activity cards detail easy-to-follow activities by showing where to place prisms, box, and mirror to deflect or redirect light and create certain angles. Ray box includes 3 LED lights in red or white so students quickly see how simple movements affect a specific light. Prisms and mirror are made of durable acrylic. Box requires 3 AAA batteries (not included). Kit includes 7 prisms, 1 mirror, 1 ray box, and 10 dry erase activity cards. Recommended for Upper Elementary and up.