Resource includes a PPT with task/success criteria/ the answer to the puzzle & images to print and laminate for students to work out the puzzle hands on. I have used this with Y11 whilst carrying out their product CA assessment. We then had a discussion about how we could relate the puzzle to the controlled assessment. Task: A man has to get a fox, a chicken, and a sack of corn across a river. He has a rowboat, and it can only carry him and one other thing. If the fox and the chicken are left together, the fox will eat the chicken. If the chicken and the corn are left together, the chicken will eat the corn. How does the man do it?