Students will work in teams to try to create a container that will keep their ice pop frozen longer than their classmates. They can use any of the materials provided and the metal pan. After they have made their container, have them place an ice pop in it, and take the containers outside in the sun. Every five minutes have students check their ice pops by pushing on them to see if they are still frozen. When a group's popsicle has melted take some time to look at their container and discuss why it did not keep their ice pop frozen. After all the ice pops have melted go back inside and have the students write in their journals about what they observed.