Edpuzzle - Edpuzzle is a program that allows teachers to turn videos into interactive assignments that track students' understanding!

Exploratorium - This cutting edge public learning laboratory offers great online resources including videos and science experiments!

National Geographic Science - Articles, videos, galleries & other science and innovation content!

NASA STEM Engagement - Tons of science stories and galleries - just select a topic and learn away!

Live Science - Interesting articles, mysteries & discoveries!

Watchkin - When someone shares a YouTube video with you, just copy and paste the URL into the watchkin search box and you’ll be taken to a clean page to watch your video. No distracting or potentially offensive videos or advertisements will appear!

A few awesome channels on YouTube:
-TED-Ed
-Amoeba Sisters
-SciShow
-It's Okay To Be Smart