I have the same problem. A wonderful teacher in our county found a way around it though. You can follow the directions below and watch anything that saw on you tube or teacher tube. I hope that this helps.
How to save a you tube video
Find the video that you want to save. Highlight and copy the address.
Go to
www.zamzar.com
Click on the tab that says Download Videos ( you don’t nee to sign in)
Paste the url for your video in the box - (step 1)
Choose your format (step 2)- I have save them as mp4 and mov
Type in your email address (step 3)
Click convert (step 4)
Wait for it to be emailed to you. It will email you a link - click on the link and it will download it :o)
I also added the directions as an attachment so that you could send them to other people.