The story about a Mexican teacher Sergio Juarez Correa who uses
unusual techniques: from Wikipedia:
Sergio surprises his sixth graders by taking an unorthodox approach to teaching and encourages them to solve problems
creatively. To help them think mathematically, for example, he transforms the classroom, turning all the desks
upside down to hypothetically represent boats in an ocean. Through this new method, he is able to get his
students to determine the right answer. When the school principal, Chucho, checks on the class, he is as
baffled as they are.