This course is designed for students in grades 3-4 that completed Young Scientists and Engineers 1 in fall 2016. The 10-week long session introduces energy and circuits, focusing on wind and solar energy. The topics for each lesson are approximately one to two grade levels ahead of the science taught in school. Classes are structured as a half an hour of lecture and one and a half hours of lab. The lab for each class always involves hands-on experimentation or building activities.