Multi-sports court
A young man wants to build a multi-sports court, that is, a court where futsal, volleyball, basketball, or handball can be played. He has doubts and calls a friend who is a physical education teacher. The friend teaches him how to make a model of the court using the similarity ratio between the measurements of the model and the land. By researching the sizes of the courts, he makes the model.
See the Teacher's Guide and the original of this video at http://m3.ime.unicamp.br/recursos/1163