This site comes from a math educator and homeschool mom. She has quite a few articles to help parents teach math at home. There are ideas for activities, suggestion for choosing curriculum, and a free email course for parents. She's also written a few books for Well Trained Mind press.
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.