As part of the Uncommon Schools charter school network, the authors began to train their teachers with video clips of skilled instructors performing a given technique. The trainees discussed and analyzed until they were sure they understood it, then moved on to the next technique.
They left the class full of confidence, but when surveyed three months later, were not so sure. Something often went wrong when they tried the techniques in class.
The authors realized that their trainees hadn’t practiced. It was the equivalent of trying to learn a new backhand in the middle of a match at center court Wimbledon.
They added repetitive exercises to their training workshops.