The Howard Hughes Medical Institute has tons of DVDs and other materials you can order for 100% free! No CC needed! (But you do need to create an account).
These are very high quality. They are great for your reference library, and for home-schooled High School aged children. And once you are on the mailing list, you get a BIG science magazine free in the mail several times a year. I subscribed to the magazine over 10 years ago and I’m still receiving the it regularly in my mailbox. Go to This Page to start ordering!
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