This site from Oxford University Press has free ebooks and storytelling videos for elementary level students. There are also some great assessment tools for reading and writing, and some useful printable worksheets and activities.
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.
Wednesday Science
This company publishes three books for helping elementary learners explore science.
Friday Arts/Electives
Self-paced, online courses for learning coding.