This wonderful, creative website encourages writing through art. Writers (of all ages!) choose artwork to inspire stories and poetry. There are tools for editing, and work can be published on the site or purchased in printed form. There are also how-to guides and courses to help in the writing process. Creating an account (as a teacher or creator) is free, and gives you access to all the writing tools. You can upgrade to a paid account for unlimited word counts and a few extra features.
Tuesday Language Arts
This company provides books and activities for developing vocabulary.
This is a small mom-owned company that provides science resources.
Thursday History/Social Studies
This British site has resources for history learning at jr. high and high school levels.
Learn computer science through game design with this online visual programming platform.
Saturday Grab Bag
Printable curriculum materials for preschool through second grade levels.
This site gives instant, step by step solutions to math problems.