Hi Sean. I really like this activity as you are helping the children to focus the research by providing background information and relevant resources but also giving them the autonomy to come up with solutions to the problem in groups. The final presentation I find works well along with the opportunity for other students to ask questions and offer possible modifications and improvements. I would often let the groups revisit their project after this step to allow them to think about advice they have received from peers and make any changes they wish.