Kidsites
http://www.kidsites.com/sites-edu/science.htm
Links to kid-friendly site on a variety of topics
Khan Academy
Real Science 4 Kids (Not program of Studies)
Kiwico Crates
(Not program of Studies)
CPAWS
https://cpaws.org/
PBS Learning Media
https://www.pbslearningmedia.org/
Lots of different activities and videos
We Are Teachers
https://www.weareteachers.com/virtual-lab-activities/
Virtual lab activities
Wonderopolis
https://wonderopolis.org/wonders?category=science
How It Works
https://www.neok12.com/How-It-Works.htm
Educational videos and games