Phases of the Moon: Website that shows the current phase of the moon.
Time for Kids: https://www.timeforkids.com/g34/
Online Learning/Scholastic: https://classroommagazines.scholastic.com/support/learnathome/grades-3-5.html
Energy and Work Science Games: http://www.neok12.com/Energy-and-Work.htm
I Have Who Has Science Cards: Review and enrichment games: https://www.hasdk12.org/cms/lib/PA01001366/Centricity/Domain/480/I_have_who_has_science.pdf
Bill Nye the Science Guy - https://billnye.com/
Science News for Kids: https://www.sciencenewsforstudents.org/
IXL (https://www.ixl.com/science/grade-3) - Explore and review the sections on Plants, Rocks and Minerals, Weather and Climate, and Earth Events.
Interactive Sites for Education - Science (http://interactivesites.weebly.com/earth-moon-and-sun.html) - Explore and review Earth, Moon, and Sun.