Besides being just plain fun, making butter is a great way to demonstrate one of the many ways food is made, as well as how liquids can be converted into solids. You can get more in depth and use the lesson to demonstrate phase change.
Animals, Chemistry, Food & Nutrition, Math & Measurements, Recipes, Science
| Age: K - 8th
Common plastic is made from petroleum, a fossil fuel and non-renewable resource. Increasingly, plastic products are being made from biomass which is made from renewable resources, often by-products of agricultural processes.
Select four slices of bread preferably from a loaf without preservatives (this will speed your mold growth.) Give each piece the following treatment and then place the slices into a “treatment-labeled” Ziploc bag. Store the bags in a warm, dark place for incubation
Making yogurt is a tasty and interactive way to learn about helpful microorganisms in the food supply. This demonstration lesson with lecture, uses powdered milk and requires no cooking. It’s prefect for a classroom.
Apples rot and turn brown because they take in oxygen and give off carbon dioxide. If apples are stored in cool temperatures, they will rot slower than they would in room temperature. Other conditions such as humidity, and the storage atmosphere also effect how quickly apples rot.
In this lesson students explore weatherization (physical and chemical) by doing a series of short experiments that demonstrate how rocks and minerals are broken down into soil. Expand this lesson further by taking students on a field trip to look for rocks breaking down into soil.