Proportion (Unitary Method) Treasure Hunt

Differentiated treasure hunts - one with questions based at Level 3 (involving only one step), and other with questions based at Level 4 (two steps). I usually print one on one coloured paper, and other on another colour: students then select which treasure hunt to do based on their level or their understanding. Stick the 20 question cards up around the room for each hunt. Students pick any to start at, they must work out the answer to the first question and then find the card that has that answer on top, then answer that next question, etc.