This site has a large collection of resources for about upper elementary to jr. high levels. There are internet hunts, project-based resources, puzzles, worksheets, and more. Subject matter is mostly history and science topics.
Printable worksheets aligned to common core standards.
This blog comes from a former English teacher, now homeschooling mom.
A library of science videos (similar in style to Bill Nye) aligned to Next Generation Science Sta
Online courses in world history and geography.
Online language program that combines computer lessons and live tutor sessions.
This company carries textbooks, workbooks and ebooks in all major subjects.