This site gives instant, step by step solutions to math problems. There are also video lessons to help explain math concepts and help for ACT and SAT tests, plus a podcast and some other information about the college application process. You can access the math help for free, but a paid subscription gets rid of the ads and gives you a few extra features.
Saturday Grab Bag
Printable curriculum materials for preschool through second grade levels.
Thursday History/Social Studies
This website from the Government Publishing Office has resources for learning about the US govern
The name of this site says it all!
Tuesday Language Arts
This company provides programs for beginning reading and math learning.
This company publishes three books for helping elementary learners explore science.
Self-paced, online courses for learning coding.