air traffic control for the brain

"Being able to focus, hold, and work with information in mind, filter distractions, and switch gears is like having an air traffic control system at a busy airport to manage the arrivals and departures of dozens of planes on multiple runways. In the brain, this air traffic control mechanism is called executive functioning..."

Much of this Harvard Ed School video was shot in a Montessori classroom.  Can you tell which clips?