【300+ Projects & Rich Accessories】Comes with 31 small circuits, fan, RGB light, vacuum, and more. Kids learn basic electrical engineering safely—ideal STEM educational science kits for ages 3-12.【Hands-On STEM Learning】 Teaches series/parallel circuits through fun experiments. Perfect classroom toy and STEM kits for kids 5-7, 8-10, 10-12—boosts coding & electronics exploration skills.【No Soldering & Tool-Free Setup】 All needed parts included (AA batteries NOT included). Simply insert circuits into the plastic board—easy for toddlers and kids to build their own circuit machine.【Colorful Guides for Confidence】 18-page manual + 4 instruction cards cover 118 building ways. Sparks curiosity and problem-solving—great electronics exploration kit for young learners.【Ideal Gift for Boys & Girls】 Cultivates little physicists and keeps kids engaged for hours. Ideal STEM toys gifts for kids ages 3 4 5 6 7 8 9 10 11 12—blends education with fun.