Ask the students to make predictions about what will happen in the next round. Each round will lead to new predictions as students start to see a pattern. Continue play until a pattern is clearly represented on the graph. If students catch on quickly, you may want to introduce a draught or famine by limiting the availability of water or food in the habitat. Simply tell all the students in the habitat to make the sign for shelter.
Eaten deer can then become predators.
At the end of play, gather all students together. Encourage students to discuss what they experienced during the game. Ask the students to make observations from the graph. Ask students to summarize what they learned from this activity.