Hi, my name is Olivia. I'm 6 years old, and sometimes I have questions about the world around us like: How to clouds make rain? Why is the sky blue? Why do the leaves turn different colors in the fall? Why do balls bounce? When that happens, I always go see my friend, Dr. Heidi. Dr. Heidi is a real scientist and probably the smartest person in the whole world. She always knows the answers to my questions. She also knows how to do all kinds of fun, easy experiments that help me to really understand how things work. Today, Dr. Heidi and I are exploring four things that happen every year...can you guess what they are? You're right - spring, summer, fall, and winter! Why not join us as we have fun finding out the answers to your questions about the different seasons by doing things like watching seeds grow into grass, collecting heat from the sun, putting together a preserved leaf book, and even making your own snow catcher!The "Little Scientist Hands-On Activities" series of books is an outgrowth of the nationally acclaimed Little Scientists educational program. Like the popular scientific enrichment classes for which they are named, these books are designed to expose kids, ages 5 to 8, to the thrill of scientific discovery, while helping them to develop core scientific skills of observing, critical thinking, communication, classifying, comparing, applying and generalizing, measuring, predicting, hypothesizing, and problem solving.