Bøger i Number Investigators serien

Charlotte Morgan is a third grader who loves math.With her friends Sally, Marcus, and Aaron they form the Number Investigators, a group that solves problems with their enjoyment of math.Charlotte's is terrified of having to stand in front of the entire school for Turing Elementary School Math Bee.That's only in two weeks, or 14 days, or 336 hours or 20,160 minutes. Can she take the pressure?Also someone took the Number Investigators stuff out of their treehouse. Was it the class bully, Gavin Eggleston?Can they get their stuff back? Will Charlotte be able to handle the pressure of the math bee?Charlotte Morgan and the Great Big Math Problem, is a 20,000 chapter book for second and third grade readers, and up.