This is a great experiment to supplement to your healthy eating habits unit! I ask students to bring in a serving of their FAVORITE snack...not those healthy ones. The ones we crave but know we shouldn't eat every day.
We open the packages and lay the snack directly on a brown paper lunch sack. We make predictions about what we think will happen to our snack over night.
The next day, will see that the bag looks 'wet' around their snack. The more the fat, the more 'wet' will appear.
I then have my kiddos trace their fat stain by placing their paper sack inside a sheet protector. They use their dry erase markers to outline all of the fat stains.
Next, they take the paper sack out of the sheet protector and insert a centimeter grid paper. They work with a partner to count the AREA of the fat stain.
Finally, they graph the area of their snack's fat stain on the provided paper.
We use the data from the class to find the minimum, maximum, range and mean.
I've included TWO versions of the graphing sheet. One has AREA numbers inserted, the other is blank. I typically use the blank one so we can individualize the graph based on our data. I
I allow 2-3 days for this lesson to be completed.