Fibonacci Art Project. A STEAM Art Project for Kids. 25 STEAM Projects for Kids. Invisible Ink (Lemon Juice) Invisible Ink (Other Methods) A letter from the Revolutionary War with lines written in invisible ink.
Credit: Wikimedia Commons Last year, the US Central Intelligence Agency released documents detailing recipes for invisible ink from 1917 and 1918. Catapult - Planning-Sheet. Sinking & Floating (Book w/ Exercises, Activities) Full List PBS Science Projects. Sci . Thermometer (PBS) Sci . Parachute (PBS)