When Paula Frasz fell from a horse in 2015 and broke her tibia and fibula, she couldn't put any weight on her left leg for three months. She continued to teach with the aid of a scooter, also known as a "knee-walker." (This device allows you to kneel on the scooter and glide, coast, speed up, slow down, stop, turn and back up easily.) Frasz relied on three crucial elements of dance pedagogy—use of vocal description and imagery, student demonstration and mentorship—and made some powerful discoveries in the process. Here's how she did it and what she learned.