Magnetic Slime--really neat, but it requires liquid starch, iron oxide powder, and really strong neodymium magnets. There is a commercially available magnet putty that might be a good substitute for exploration.
So much to learn about leaves -- structure, shape, color, … These are fun science activities for kids to learn about plants through leaves. They are so fun and easy, that a preschooler can enjoy them. Great for encourage love of nature too. | STEM