This 10-pack of single AA battery holder perfect for use in your next hobby project or science fair project. Each holder includes lead wires for easy connection. Great for use with a variety of electronics applications.
Build 14 assorted solar robots, some of which can travel over water!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
Find the hidden crystals when you open your own geodes from this fun set.
This 1mW, 532nm Super Safe Green Laser Pointer is for education, government or other settings where safety is a concern.
Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!
Create all kinds of marble run combinations with this 80-piece Marble Run set!