Final answer:
Labeling and using stickers on the objects helps to identify and differentiate the objects, making it easier to study their behavior.
Step-by-step explanation:
The purpose of labeling and using stickers on the objects is to identify and differentiate the objects. By labeling the objects with numbers and using different colored stickers on each end, the student can easily distinguish between the objects, making it easier to study their behavior. The labels and stickers serve as a way to organize and keep track of the individual objects.