The Cookie Factory Mystery is a unique interactive math mystery that combines video clips and print material - all the clues your students will need - to solve this engaging and challenging mystery. This mystery covers the Ratios and Proportional Relationships domain:Understand ratio concepts and use ratio reasoning to solve problems. The Plot: Charlene Strawberry's cookie business is in trouble. Her new Peppermint-Filled Chocolate Cookie tastes like dog food! Charlene is convinced it's sabotage. Using their math skills, your students discover that she's right. So whodunit? One of her trusted employees? Or is the culprit Simon Botsteen, her main competitor? And what does Francoise the hypnotist have to do with the case? Includes Resource Guide.