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 Grand Canyon's South Rim has an elevation 7,000 feet above sea level. Such an elevation means snow in the winter and cool nights, even in summer. The Inner Canyon (below the rim) has a distinctly different climate, since at the bottom along the Coloardo River, elevation is almost a mile lower.