33. Melting Ice Science Experiment: This melting ice science experiment uses salt to melt tunnels in the ice and color to highlight the tunnels. Beautiful and fun for kids and adults alike! (via Artful Parent)
34 Write a Secret Message Using Invisible Ink
34. Write a Secret Message Using Invisible Ink: Did you know you can make great invisible ink from lemon juice? Armed with this new bit of knowledge I put my thinking cap on and came up with the idea that (via Mini-eco)
