Here are some we websites you might want to take a look at:
Maddie Moates Let's go live - https://www.youtube.com/user/maddiemoate.
The daffodil dissection is great. Why not get your own daffodil and do it at the same time!
Cool science experiments - http://coolscienceexperimentshq.com/
Easy experiments to do with everyday equipment.
Operation Ouch - https://www.youtube.com/channel/UCQJDFI9j8UeNoqra37p5OkA
Two real life doctors,who are hilarious, explain how the human body works.