4M – GLOW CRYSTAL GROWING (US)
Grow your own beautiful crystals that will glow in the dark. It’s a fun and luminous chemistry experiment.
10+
Related products
-
4M – METAL DETECTOR ROBOT
Build your own metal detector robot. Hunt for buried treasure by driving the robot back and forth with the remote control. When you hear it beep, you have found something metallic!. You can also detach the metal detector unit, and use it hand held for household metal detecting. -
4M – TABLE TOP ROBOT
Assemble a smart robotic crabwhich can detect the edges of any platform and makeswift turns to avoid falling off. Watch it perform stunning acrobatics. -
4M – SPY SCIENCE/SECRET MESSAGE
Have fun communicating secret messages with your friends like spies do. Send top secrets in morse code, invisible writers, x ray secret notes, and more. Learn common secret codes used in the spy world.
