Feature: 1. Educational and Engaging: The optical experiment set utilizes optical principles to project fascinating light and shadow effects, stimulating children's interest in science and encouraging educational exploration. 2. Enhances Skills: Suitable for primary school students and children to cultivate their practical ability and observation. It contains small experiment accessories, so that children can learn science knowledge in play. 3. Ideal Gift: Packaged in an exquisite gift box, this educational experiment set serves as a fun gift to kids on birthdays or during holiday seasons, introducing them to the joy and wonder of scientific discovery. 4. Promotes Interaction: Easy to operate and suitable for both home and school settings, this set offers a means to increase children's interactions with family and friends as they collaborate and experiment together. 5. What You Get: 1 light source machine, 1 imaging plate, 2 rotating base, 1 three hole rotating disk, 1 vertical convex lens, 1 convex lens, 1 concave lens, 1 reflector, 1 semicircular lens, 3 filters, 13 media plate, 1 dot grid plate, 1 strip grid plate. Specification: Item Type: Physics Optics Experiment Set Material: Plastic Size: Approx. 15 x 13 x 19cm / 5.9 x 5.1 x 7.5in Battery Type: 1.5v AAA Battery x3 (Batteries not included). Package List: 1 x Light Source Machine 1 x Imaging Plate 2 x Rotating Base 1 x Three Hole Rotating Disc 1 x Vertical Convex Lens 1 x Convex Lens 1 x Concave Lens 1 x Mirror 1 x Semi Circular Lens 3 x Filter 13 x Medium Plate 1 x Point Grid Board 1 x Strip Grid Board Note: Warm Tip: Children should play under adult supervision to avoid swallowing small toy parts.