According to Vygotsky (1978), much important learning by the child occurs through social interaction with a skillful tutor. The tutor may model behaviors and/or provide verbal instructions for the child. Vygotsky refers to this as cooperative or collaborative dialogue.
Grand Junction, Colorado is 4,593 feet (1,397 meters) above sea level.
The uplift of the Colorado Plateau is uneven, and the Kaibab Plateau that Grand Canyon bisects is over a one thousand feet (300 m) higher at the North Rim (about 1,000 ft or 300 m) than at the South Rim.