2 books · Ages 4–8 · Chapter Books
7 Ate 9 is a 2-book series for ages 4–8 by Tara Lazar. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Time Flies: Down to the Last Minute and 7 Ate 9: The Untold Story are great first picks.
No particular order needed — browse and pick what catches your eye.