I seem to remember trying out this site some time ago. As a resource for making music it was awesome but I think that you have to upgrade to a fee based account if you want to save and/or download your music creations. I hope someone will comment on this?
"There are tons of free historical games, interactives and simulations on the web. Playing history aggregates info on these resources in a simple, searchable database making it easy to find, rate, and review historical games. There are currently 130 shared games. "
"The site is a treasure-trove of educational content and professional development, with an online library of more than 1,000 free media resources featuring media from popular public television programs, including NOVA, Frontline, Design Squad, and American Experience, among many others."
"PBS KIDS Island is designed for reading practice, from letter recognition to reading words. The island is an amusement park filled with reading games, in which players work on reading skills to earn tickets to get prizes to decorate their tree house and to unlock new rides and games."