Homemade Bath Crayons from Little Crunchy Mama: Buy some glycerin soap at a craft store. Melt it in the microwave, add food coloring, and pour into an ice cube tray. Takes about an hour to cool completely, then pop out of the mold and you have crayons!
The foldables are for older kids, but this erosion experiment could easily be done in Pre-K.- Working 5 to 9 . Math and Science: Grade Science Foldables and other scienc projects Classroom Creativity,educational,F