Science

General Science:

https://www.learn4good.com/games/scienceforkids.htm

http://easyscienceforkids.com/

http://discoverykids.com/

http://pbskids.org/games/science/

Plants:

http://www.sciencekids.co.nz/plants.html

http://www.biology4kids.com/files/plants_main.html

Earth & Space:

https://www.nasa.gov/audience/forstudents/k-4/index.html

Matter:

http://www.abcya.com/states_of_matter.ht

Force, Motion, & Energy:

http://www.physics4kids.com

Weather:

​http://www.sciencekids.co.nz/ ​

Investigation:

http://www.sciencebuddies.org/science-fair-projects/landing-science-inquiry.shtml?gclid=CIS1mcLYuZcCFQQCagodYE10SA