Start your classes’ school year with a bang and help students introduce themselves to each other with the Let’s Cooperate Code Cracker! Students must work together on 6 tasks to reveal 6 numbers to crack a lock combination. The groups are then presented with a final riddle to help them arrange their code correctly to help them succeed in their mission. Get a 6-digit lock or two 3-digit locks and a lockable box to hide a reward or message for students to compete for.

Run this activity as a timed rotation system for six groups on six activities, or create it as a race to the finish. As previously seen with Teach Starters, Marvin Measurement’s Treasure Box, and Christmas Code Cracker, students love working together on various small group tasks, where students need to communicate and cooperate to help each other succeed.

This teaching resource has a PDF containing teacher instructions, activity answers, activity templates, and task cards. This activity is also available in lower and middle year levels.

Make sure you visit the links and download the additional resources.

Activities include:

• Start Poem
• Ancient Code Wheel
• Illustration Treasure Hunt – download the Inference Scenario Posters
• What Time – download the Time Zones World Map
• UV Scavenger Hunt – you can find UV pens, also known as Invisible Ink Pens, in most places where office supplies are sold or on Amazon.
• Hidden Object
• Pirate Voyage
• Finishing Riddle