*** http://powermylearning.org ~ Here you’ll “find and use thousands of free games, videos, and interactives in all major K-12 subjects and aligned to the Common Core”–all designed with educators, parents, and students in mind.
*** https://nationalzoo.si.edu/kids ~ This Smithsonian Institute National Zoo Park site offers streaming web cams of the zoo’s 2,000 animals.
*** www.smithsonianeducation.org/students ~ As it says, this site is “a place for kids to explore, discover, and learn” and offers up games, activities, and more in art, science and nature, history and culture, people and places.
*** www.federalreserveeducation.org ~ This site offers lots of fun money facts, together with classroom resources, games, simulations, and more.