Features: - All STEM sets are designed to teach scientific principles in a fun, hands-on way that is both entertaining and educational. - DIY building fun: with these circuit kits, you can build up to 38 scientific circuit kits - 38+ Experiments with Light, Magnetic, Sound and Touch Control! Electrical Circuit Board Built for Aspiring Electricians - With a large circuit board and parts, your child will learn the basic concepts of electronics, including electricity, voltage, current, resistance, magnetism, electrical circuits and theories. - The illustrated instruction manual will guide them through the fun 38+ experiments, which includes learning to connect. - Requires 2 AA batteries (not included). For ages 8+. - Learning Block Kits - Experimental model of construction of educational circuits for beginners in the discovery of physical electricity and innovation - This small kits allow your young engineer to explore, learn & have great fun when completing their very own toy kits. - Motivate the teens' science enthusiasm. Keep them away from screen games for a while. Specification: Material: Plastic , Electronic component, paper, metal wire Weight: 1.1 kg Size: 36.5 x 28 x 8 cm Battery: 2 x AA battery (not included) Applicable age: over 8 years old