Thanks everyone!
DD9 says she has had Study Island for a couple years now at school and doesn't really care for it, so we marked that one off our list. She also poo-poo'd Brainpop.
I signed up for Alcumus and we will give that a try. We are also going to try the 14 day free trial of Dreambox to see if we might want to put the app on an iPad. They have Duolingo already and DD9 likes it (DD8, not so much). I think Lumosity has a free iPad version we can test out. I also bookmarked howstuffworks.com. Instructables.com looks similiar to DIY.com. We have played around some on DIY, but will add Instructables too.
I'll try to remember to come back to this and let everyone know how the girls liked these new websites.
