Recorder No.1 STEM Tech Mini Craft Wooden Handmade Assembly Model Analog Signal to Digital Signal Conversion

$20.80

Circuit Board Building Blocks Toy for Kids, Birthday Gift for Boys Aged 4-9, Science Experiments, Physics Enlightenment

$58.00

DIY Science Project Kit – Traffic Signal Light Model, Scientific Experiment Materials for Elementary School Education, Assembly Toy

$33.00

Air Purifier STEM Science Experiment: Creative Handmade Humidifier Model for Elementary Students, Maker Materials

$6.67

Paper Circuit STEAM Creative Paper Art Circuit Greeting Card DIY Material Kit Desktop DIY Electrical Experiment Educational Tool

$28.00

Student Science Experiment Air Battery, Voltaic Pile Saltwater Power Generation DIY Invention Material Kit

$8.00

Electric Waterproof Pulse Water Gun Core, Direct Shot Gearbox Switch, Lithium Battery Toy Water Gun Motor Assembly

$9.90

Internal Combustion Engine Model No. 1, Student Physics Experiment Equipment, Small Fuel Engine, Creative Invention Material

$9.96

Zero Degree Water High-Difficulty Tech Invention DIY AI Infrared Left-Right Obstacle Avoidance Car (No Programming Required)

$46.80

Children's Walkie-Talkie AI Robot Science Experiment Educational Wooden Tech DIY Project 200m Wireless Toy

$5.50

STEAM Elementary School Science Experiment Tech Small Production DIY Assembly Educational Toy Metal Detector 6-in-1

$116.00

Automatic Coin-Eating Robot Fun Circuit Switch Children's Science Small Craft Small Invention Tech Festival Project Toy

$55.00