8th

This video talks about the different types of blood types and why those are important.

Did you know that horseshoe crabs (they aren't really crabs) are used in the medical field?  Find out how the medical field is using these amazing creatures to help mankind.

If you don't know why stars can look like they are twinkly, then this video would be great to watch and show to your students.

During your unit on adaptations, evolution, or predator-prey relationships, this video would be an excellent one to show your students.  In it, is a discussion as to the possible reasons for zebras having stripes.

This is a great video that can be used as an introduction or a simple review of the characteristics of life.

This video does an incredible job of discussing how bacteria are overcoming our human-created anti-bacteria.  It discusses the different ways in which bacteria reproduce and current technologies being used in developing better anti-bacteria.  WARNING: Judge the maturity of your class and watch this first to make sure that your students can handle it.  They use the word sex instead of sexual reproduction.

Have you or your students ever wondered why we yawn?  The theory that you may have heard was to add more oxygen to your body.  Well, guess what, that may not be the case.  It might be a way to keep your brain cool.

This is a great video about the differences between a birds-eye and a human eye.  

Have you ever wondered why your cat loves you to death?  You know when he takes out his claws and proceeds to dig them into your flesh.  This is called kneading and this video discusses why domesticated cats have a tendency that wild cats don't retain in adulthood.

This video discusses a range of astronomy topics.  The main theme of it though is, how likely planets are to being habitable.  Planets need to be the right size, the right distance from the sun, the sun needs to be the right size, and atmospheres and water need to be present.