This program comes from the Association of Fish and Wildlife Agencies. It's goal is to develop awareness of wildlife and environmental issues. The full curriculum is available to educators (which seems to include more than public school teachers) who attend a training workshop. There is no cost information on the website, but a co-op or other group should be able to schedule a workshop. The website also has free resources to accompany many of the activities in the curriculum, so it could be useful even without the complete set of materials.
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.