Best Seller
Paperback
$16.99
Available on Nov 17, 2026 | 160 Pages
The math trophy has vanished! Young problem-solvers will be eager to crack the case in this interactive story packed with 150+ math and logic puzzles.
Chris, Kaira, and Ren are ready for their next challenge: representing the Codebreakers Club in the biggest math competition of the year. But when the lights go out in the middle of the event, the contest takes a shocking turn. By the time the room lights up again, the championship trophy is gone.
Now the Codebreakers Club must race against the other contestants through a series of math puzzles, logic challenges, and clever clues. But as the mystery deepens, Chris, Kaira, and Ren begin to wonder: is something crooked being calculated?
Chris, Kaira, and Ren are ready for their next challenge: representing the Codebreakers Club in the biggest math competition of the year. But when the lights go out in the middle of the event, the contest takes a shocking turn. By the time the room lights up again, the championship trophy is gone.
Now the Codebreakers Club must race against the other contestants through a series of math puzzles, logic challenges, and clever clues. But as the mystery deepens, Chris, Kaira, and Ren begin to wonder: is something crooked being calculated?
- 150+ math and logic puzzles woven into a fast-paced story
- Logic grids, crossword puzzles, word searches, and more tap into topics such as graphs, fractions, geometry, coding, and the history of math!
- Builds math confidence, reading comprehension, problem-solving, and critical thinking
- Screen-free learning fun that’s perfect for independent play, family and friends puzzle time, road trips, summer break, classroom activities, and more!
- A brand-new, standalone adventure following The Codebreakers Club Solve the Mystery of the Missing Puzzle Professor
Author
Naoya Imanishi, MEd
Naoya Imanishi, MEd, has been an educator in the Los Angeles Unified School District since 2000, serving as a third-grade teacher, math coach, and currently a school coordinator. He also works with the UCLA Mathematics Project as a teacher leader and coach for professional development in Cognitively Guided Instruction. While attaining his bachelor’s and master’s degrees in education at UCLA, he was one of the first producers of LCC Theatre Company and cofounder of Propergander, both Asian American theater companies with notable alumni. Naoya enjoys video editing and cooking for his wife, Jennifer, their sons, Kyle and Jordan, and their dog, Buddy.
Learn More about Naoya Imanishi, MEd