Your students get to be multiplication detectives. Not only do they check their own work using the code, but they are also motivated to keep working! After students have solved the provided codes/riddles, they can create their own, taking them to the next level. This gives a chance for the creative students to shine. Students also have to think of which two factors they can use to get the product they need. This is a great way to get them in the right mindset to transition to division!