Which of the following describe ways to encourage true cooperative problem solving in the classroom? a. Include goals that are intrinsically interesting to the children.
b. Provide an environment that supports cognitive growth problems.
c. Plan activities in which children have a shared goal.
d. Provide opportunities for children to test the validity of their solutions.

In a study of a weight loss program, 40 subjects lost a mean of 3.0 lb after 12 months. does the weight loss program have practical significance? a. yes, because the weight loss program worked and the subjects lost a mean of 3.0 lb. b. no, because the mean weight loss of 3.0 lb after one year does not seem to justify the program. c. no, because the sample of 40 subjects was too small to determine if the program was useful. d. yes, because the mean weight loss of 3.0 lb after one year does seems to justify the program.