A prediction is a guess about what might happen in the future, based on observations that you make. We are going to pour water into the petri dish. What do you think will happen? 1. Observe the Gobstoppers in the petri dish. 2. Think: What do you think will happen when we pour water into the petri dish? 3. Click on the template. Color your prediction on the petri dish. 4. Record your prediction.