________ play occurs when children engage in the self-regulated creation of a product or a solution.

What is the probability of drawing either a king or a queen from a standard (52-card) deck of playing cards?

a. .15 b. .31 c. .50 d. .62

The__________monitors brain waves and can be used to teach people how to produce alpha waves, which are associated with relaxation

A) coronagraph B) heliograph C) phonocardiograph D) electroencephalograph E) Select