This week's preschool theme was oil. One project we did was to dye cooking oil with food coloring, then pour some of it into a dish of water to make oily globs on the surface. Then we laid a sheet of card stock on top and it absorbed the colored oil. The effect was beautiful, and surprisingly, the project didn't turn out to be that messy after all. (See the "painting with oil" link above.)
Say, share, play with us!