The textbook author suggests that it is not a good idea to incorporate more than a few extra-credit points into students' grades. Why?
a. Scores on extra-credit projects frequently suffer from low reliability.
b. Incorporating extra-credit work into classroom grades typically affects only the grades of high-achieving students, so it is not worth the time and trouble.
c. The time spent on extra-credit assignments is better spent planning classroom activities.
d. Too many opportunities for extra-credit points allow students who have not met instructional objectives to get good grades.
d
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The most important reason for having a receptionist or secretary overlooking the entry area
is ___. a. ?to forbid parents with overdue tuition payments from entering the center b. ?to ensure that everyone who enters has a legitimate purpose c. ?to relieve the director from the responsibility of greeting parents, children, and visitors d. ?to ensure that the staff is coming to work on time
If all other factors are held constant, increasing the level of confidence will cause the width of a confidence interval to
a. decrease. c. show no change. b. increase.
Do not schedule more than __________ interview(s) on the same day
a. one b. two c. three d. four
Which of the following best characterizes the relationship between constructive activity and child development?
a. The child constructs new ways of solving familiar problems: new means to solve old ends. b. The child constructs new problems using old solutions: new ends achieved by old means. c. Means-ends coordinations are heterotelic reciprocities essential to development. d. A and B