The code breaker board makes use of the Maths White Board question bank (click here). When creating your code breaker activity, you can select a topic and how hard you want to test a specific skill from that topic! What makes this resource great is that every time you create a code breaker activity, you will get a FRESH NEW SET OF QUESTIONS!
To begin, search the question bank for a specific skill. Select the difficulty level of the skill, choose your message to encode then select Preview to begin creating your activity.
Please note the code breaker generator does not currently support the rendering of activities on iPad/tablet/mobile devices.