Day 1: Teacher and students will look at their assortment of "unhealthy" foods. Students will discuss in groups, then as a class, whether or not they think these foods are good to eat and why. Teacher will provide students with paper towels and a serving of the "unhealthy" foods. This may be done in groups for a smaller scale experiment. This food will be left out overnight so that the fat in the foods will create a stain on the paper towel.
Day 2: Students will document their findings by taking digital photos, with assistance if needed. Teacher will lead the class in a discussion of what caused the stains and how excessive fat in our diet is unhealthy. Students will hopefully deduce that the appearance of the stain can indicate higher levels of fat. Students will then predict what will happen when they repeat the process with the fruits and vegetables. If you are lucky enough to have a school garden, students can go collect fruits and vegetables from the garden. The fruits and vegetables will be left out overnight on paper towels.
Day 3: Students will observe and document with photographs the results from the fruits and vegetables, noting that there are no fat stains. They will then discuss making healthy snack choices. The teacher may end this portion of the lesson by showing the video which is linked above.
Day 4: Teacher will upload and review the photographs taken during the experiments and have students create a response using writing and/or drawing to explain the experiment process and express their conclusions.