I came across this YouTube channel the other day - Crash Course Kids.
Crash Course Kids is a channel that is dedicated to elementary science with a focus on 5th grade science. Crash Course Kids videos offer lessons in Earth Science, Physical Science, and Life Science. On the Crash Course Kids channel, you will find videos on the Earth, habitats, space, chemical reactions and even engineering. The subjects are introduced by a young host who brings humor to the topic with a combination of animated features. The Crash Course Kids channel has created videos that will appeal to the younger viewers.
Here is a video from the Crash Course Kids channel...
Every Tuesday and Thursday, Crash Course Kids uploads new videos for all to enjoy. Not every video may be beneficial to you but I bet you will find more useful one than you think. You can subscribe to Crash Course Kids YouTube Channel or follow them on Twitter - @crashcoursekids to keep up to date with new uploads their Crash Course Kids channel.