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.
Learn about detective science through this fun fingerprinting kit!
Illuminate both your room and your mind with this ingenious Periodic Table Lamp.
Comprehensive collection of 30 fossils.
Every kid needs one of these spheres!
This is a great clean heat demonstration model for the classroom setting!
The large realistic model has removable organs that can be studied and set back into the correct position.
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