2 books · Ages 9–14 · Middle Grade, Chapter Books
Everything Your Schoolbooks Didn't Tell You is a 2-book series for ages 9–14 by Steve Sheinkin. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, King George: What Was His Problem? and Which Way to the Wild West? are great first picks.
No particular order needed — browse and pick what catches your eye.