PBS KIDS' Design Squad Nation is an Emmy Award winning program with STEM related videos, activities, games and an interactive community. There is also a Parents and Educators section with lesson plans, curriculum guides, and more.
There are some great new features to it, including a Solar System unit with games, activities, and lesson resources about our solar system, a roller coaster project where students compete to build the best roller coaster out of poster board, and a variety of other resources.
Topics include science, flying, hobbies, sports, and much more.
This is a great, free resource for educators, parents and students and well worth the time to explore it.