All of the ancient Greek performers, except the musician, wore masks of lightweight wood, cork, or linen in

Why is the Greek period after the Mycenaeans known as the "Dark Age"?

A. Most of the technological and intellectual developments of the Mycenaeans were lost. B. Little is known about it. C. The age was subject to almost constant warfare. D. Greece fell under control of foreign powers.

During which of the following of Piaget’s stages of cognitive development does the child move from a “body-centered” world to an “object-centered” world?

a. Concrete b. Formal operational c. Sensorimotor d. Preoperational