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 - with its 1,900 square miles on the Colorado Plateau, Arizona - is undoubtedly one of the major visual spectacles on Earth. Elevations ranging from 1,200 to 9,100 feet create bewildering shapes and colors - and also diverse climatic conditions that you should take into account in your visit. See: