Cornell scientists have developed a science kit for use in grade school classrooms.

Living cells are put under a microscope to show their movement. Then, a liquid with the equivalent of a few puffs of a vape are placed on the living cell. Students can watch as the small cells stop moving.

Its purpose is to teach them, rather than tell them, why vaping can be harmful.

"It's another thing to have somebody say to you 'don't do that; it’s not good for you.' It’s another thing altogether to take a living cell and take what you're breathing into your lungs, and add it to a living cell, and see what happens," said Donna Cassidy-Hanley, a senior research associate at the Cornell College of Veterinary Medicine.

To order a kit for your school, click here.