Scholastic & FREE
Scholastic, the global children's publishing, education and media company, has created quality products and services that educate, entertain and motivate children and are designed to help enlarge their understanding of the world around them. A very interesting website with free online interactive learning activities.
FREE (Federal Resources for Educational Excelence) makes it easier to find teaching and learning resources from US federal agencies. It was originally conceived in 1997 by a federal working group and launched a year later. It was redesigned and relaunched for the first time in November 2006.