This is a teacher website with quite a lot of lesson plans and worksheet resources. Some of it is free, but some requires membership.
This online program provides adaptive reading passages on history and science.
This resource provides virtual manipulatives and online lessons for math learning.
An inexpensive, rule-based spelling program.
Another site with videos for elements in the Periodic Table.
This site is an interactive atlas, timeline and encyclopedia of world history.
A no-frills, free online typing course.