This is normally a $15 value, free for the week!! BE sure to sign up (free) for their newsletters which remind you of the free weekly freebies (not to mention it will sometimes include links to "hidden" freebies!!!
Normally I do not share those here since I am sure everyone gets them already BUT this one was good!!
Bite Sized Physics: Force
“Empty the Trash” and 9 Other Ways Teen Guys Become Men
32 minutes ago