In this lesson, the students will make gelatin and gelatin jigglers. They will compare the similarities and differences between the two types of gelatin.
Discuss with the students how temperature can also effect how liquids and solids change. The students will be involved in the process of making the experiments, but for safety reasons they will not get close the stove during the heating process. Now that the students have been describing the changes they have been observing, they will have the background to explain what is happening within each of the recipes.
The students will observe how in both recipes the granules of the gelatin need to be heated in order for the granules to dissolve. They will then see how the regular gelatin continues to change once cold water and refrigeration are added to the process. Once the gelatin has settled they will compare the two mixtures. The regular gelatin easily falls apart and is difficult to hold for an extended period of time. However, the jigglers are a bit firmer and will hold its shape. It is also able to hold up to the students touching it. The students will then record their observations in how they feel, look and taste.