Click here for the DIGITAL VERSION! This math mystery is a fun way for 3rd graders to solve word problems in a unique way. Kids start reading at the beginning of the book, solve the problems, and go where the book tells them to go! A wrong answer will send them to a 'stopper' that will tell them to go back to where they were working, and TRY AGAIN! There are addition, subtraction, multiplication, and division problems included. There is also a problem with elapsed time and one with money. I use