The problem I am trying to solve is to reduce the heat loss. I used things that can reduce heat loss and covered them around the cup. I think if you add something that keeps the heat inside the cup on the cup, it will reduce the heat loss. Because the cup with insulator’s heat loss is less than cup without insulator.

What I am most proud of is the heat loss of the cup with the insulator we made is less than the cup without insulator. What I would do next time is I would try to communicate with my partner.