Hot ice, scientifically known as sodium acetate, is a liquid that will turn solid at the slightest provocation. Touching it with your finger or bumping it too hard will cause it to spring from a clear, water-like state into solid ice-like crystals.
Learn how to make both a basic homopolar motor and a tiny dancing motor! Great science fair project for older kids! From @babbledabbledo
How Strong is Spaghetti? STEM Challenge for Kids! Create tests to investigate the strength of spaghetti. Ask the kids to design a testing method to determine the strength of spaghetti. What can you create to demonstrate its strength?