Which kind of hypothesis states that an effect (or difference or relationship) will be found and also specifies the nature of that effect?
a. Null hypothesis
b. Nonnull hypothesis
c. Directional hypothesis
d. Nondirectional hypothesis
Ans: C
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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.
Which of these coins or units of currency will NOT help students understand decimal fractions?
a. 5¢ b. 1¢ c. 10¢ d. $1
Three of the following teaching practices are consistent with Piaget's theory of cognitive development. Which one is not?
a. A second-grade teacher encourages students to (1) speculate about possible explanations regarding why kites of different shapes fly differently and then (2) test each explanation systematically. b. A ninth-grade science uses a three-dimensional model of the solar system to illustrate her explanation of why it's warmer in summer than in winter. c. When a high school student claims that people should "Make love, not war," his teacher urges him to consider whether such an approach would have been advisable when the Fascist movement was gaining ground in Europe in the late 1930s and early 1940s. d. When 7-year-old Martin says that two nickels are worth more than one dime because there are two of them and they're bigger, his teacher asks, "How can that be? Two nickels are worth ten cents, and one dime is also worth ten cents."
When registering for a math or science course, choose the one
a. that is below your present level of proficiency (so that you can earn a good grade). b. that is consistent with your current level of proficiency. c. that is beyond your current level of proficiency. d. that has a name that you like.