Perfect science fair project!! Enough material to grow 3 trees
Crystal Growing Tree
Instructions with 17 scientific questions and answers
For Ages 5+
This new model comes with a sturdy cast metal base, testing spring, metal scale, four 20-gram weight...
This kit includes several devices for generating and using electrical energy, letting you demonstrat...
Great for use in both lectures and hands-on activities! This unit consists of an acid-proof, non-por...
Device to measure electrolysis.