If we had to pick just one subject to do all year long that would both keep the kids engaged and help them learn about a ton of things, we’d pick science. Specifically, we’d focus on hands-on science experiments for kids that range from the super messy to the super detailed. Why? Well, science is not only fascinating, but it gives kids a chance to make hypotheses, observations, record results, and do research. It brings out their curiosity and gets them excited about the big (think solar system) and small (like finger prints) aspects of our existence. Here are some of our favorite preschool and elementary science experiments for kids.