Set of 4 single AA battery holders that snap together to form either parallel or series connection.
By using these 4 battery holders you can get 1.5V, 3V, 4.5V or 6V (series connection) or get 4x current at 1.5V (parallel connection).
Great, versatile AA battery holders for any electricity project.
Find the hidden crystals when you open your own geodes from this fun set.
Learn all about Newton’s Laws and Energy conservation.
This SUPER Erector Construction set is one of the best you'll find anywhere!
An unconventional ball-tossing, head-catching challenge for 2 players or teams!
This kit focuses on teaching children about electricity and how electronic devices work!
Build your own 10 inch kaleidoscope with this great kit!