NASA
The Science of the Sun
There's more to that glowing ball of light in sky than most children realize. From the overall structure of the solar system, to the changing of the seasons, these hands-on lessons open the eyes of young scientists to the important role...
Texas Heart Institute
Exercise: What Kinds of Activities Are Best?
What happens in the muscles during anaerobic and aerobic exercise, and how does this affect the heart and our overall health? A cross-curricular instructional activity that introduces learners to the lifelong benefits of exercise,...