STEM Toys for Ages 9-12 | 30-40% Off
Shop curated STEM toys for ages 9-12 — Curious Builders. Up to 40% off retail prices. Free shipping on orders over $50.
Best Seller
-30%
Snap Circuits Electronics Kit
Build working electronic circuits with snap-together components. 75+ projects included.
-29%
Robotics Starter Kit
Build and program a real robot with sensors, motors, and a visual programming interface.
-34%
Crystal Growing Lab
Grow vibrant crystals in multiple colors while learning about chemistry and geology.
Popular
-30%
Bridge Builder Engineering Set
Design and test real bridge structures. Learn physics and engineering through building.
Top Rated
-33%
Kids Microscope Lab Kit
Real 40x-1000x microscope with prepared slides, specimen tools, and a guide to the microscopic world.
-34%
Electric Motor Science Kit
Build 10 working motor-powered machines. Teaches electromagnetism, circuits, and energy conversion.
Popular
-30%
Hydraulic Robot Arm Kit
Build a working hydraulic-powered robot arm that grips, lifts, and rotates. No batteries required.
Math Puzzle & Logic Game Set
25 brain-teasing math puzzles, logic games, and spatial challenges. Develops critical thinking skills.
-30%
Volcano & Geology Lab
Build erupting volcanoes, identify real rock specimens, and conduct 15 geology experiments.
Popular
-33%
Thames & Kosmos Crystal Growing Lab
Grow spectacular real crystals in 4 vibrant colors — learn mineralogy and solid-state chemistry.
-33%
4M Solar Powered Robot Kit
Build a robot that moves entirely on solar power — no batteries ever needed. Includes 3 movement modes.
-33%
littleBits Base Inventor Kit
Snap-together electronic modules that build working inventions — no wiring or soldering required.
-29%
National Geographic Mega Fossil Dig Kit
Excavate 15 real fossils from 3 large dig blocks — includes fossil ID poster and paleontology guide.
-33%
Thames & Kosmos Weather Station Pro
Build a professional weather station that measures wind speed, rainfall, humidity, temperature, and air pressure.
Best Seller
-31%
Snap Circuits Extreme SC-750
Build 750+ electronic projects including an AM/FM radio, digital voice recorder, and programmable circuits.
-33%
Gears! Gears! Gears! Deluxe Building Set
100-piece motorized gear set with a battery-powered motor — build wild spinning gear machines.
Top Rated
-33%
Gravity Maze Marble Run Logic Game
60-challenge logic puzzle where you build a marble maze from tower pieces — engineering and spatial reasoning.
-30%
Human Body Anatomy Model — 31-Piece Set
Detailed human torso model with 31 removable organs and parts — explore biology from the inside out.
Value Pick
-33%
4M Green Science Water Powered Clock
Build a working digital clock powered entirely by water — demonstrates electrochemical energy generation.