Before starting the activity, heterogeniously group the students according to academic ability in groups of three:

• a highly achieving student
  
  
• a middle-level student
  
  
• a low-level academic achiever
  

Each group should include a self-motivated, highly achieving student, a middle-level student who may just need to be pushed now and then or just needs a little extra explanation from a group member to understand a concept or instruction, and a low-level academic achiever who has difficulty understanding instructions, deciphering numbers, or just keeping up in general. Students will receive both group and individual grades, so there will be a motivating factor to help each other and to understand the activity at a personal level.