This great rock tumbling kit comes with everything you need to polish stones and gems. Tumbling is easy: just place a few rocks or minerals into the tumbler with some grinding powder, and start tumbling! The grinding powder duplicates the erosion process that takes thousands of years in nature. It also comes with jewelry-making accessories to display the rocks, and is excellent as a birthday present or Christmas gift.
The Wimshurst Machine is a high quality static machine for student labs.
This beautiful candle holder is carved out of natural amethyst!
The Duncan Phoenix Diabolo features a stable, hard rubber shell that retains its shape.
Exciting magnet exploration for ages 8 and up!
Check out this high-quality gyroscope!
Get swept away by this fantastic robot kit that uses vibrations to move!