As a demonstration during a unit on weather, a teacher adds food coloring to the bottom of a beaker of water being heated on a hot plate, and the students observe the movement of color in the water. Which of the following processes is illustrated by the movement of the color?
A. Conduction
B. Convection
C. Evaporation
D. Radiation
Ans: B. Convection
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The most difficult multiplication and division facts for most children to learn are:
a. multiplication by 0, 1, and 2. b. multiplication by 5 and 10. c. facts for the square numbers. d. multiplication facts with 7, 8, and 9 as factors.
Mr. O'Hara has developed a test of mechanical aptitude. At the beginning of a course in auto mechanics, he gives this test to his students. At the end of the year, he compares students' scores on the test with their actual achievement in his course. What is he probably trying to find out about his test?
A) Its reliability B) Its construct validity C) Its content validity D) Its predictive validity
There are many reasons why students with emotional and behavioral disorders are underidentified in schools. Which answer is NOT one of those reasons?
A. Eligibility for categorization as emotionally disordered is not clearly defined. B. Students do not display emotional and behavioral problems at school. C. Schools may lack funding. D. Few adequate assessment measures to facilitate identification exist.
Which of the following is true about teasers?
A. teasers have often been the victims of teasing B. teasers are very good at perspective-taking C. teasers fully understand the impact of teasing on the other person D. none of these