They've recently posted about several non-fiction titles related to education and homeschooling/afterschooling. You can find Pixel of Ink's pages tagged homeschool or education to see individual posts about the books they have tagged in each category.
Several of the educational Kindle books I downloaded recently include:
- Grammatically Correct (Anne Stilman)
- The Everything Guide to Study Skills (Cynthia C. Muchnick)
- Latin for Beginners (Benjamin L. DeOoge)
Note: Free Kindle book deals can change at any time without notice, so make sure the Kindle price says $0.00 before you click Buy. If you see something you are even a little interested in or think you might be able to use another time or when your student is older, be sure to "buy" it when it's free!