4 books · Ages 6–10 · Chapter Books
Scholastic Question and Answer Series is a 4-book series for ages 6–10 by Betty Polisar Reigot. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Why Don't Haircuts Hurt? and Do Tornadoes Really Twist? are great first picks.
No particular order needed — browse and pick what catches your eye.