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.
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.