A researcher calculates a mean from a sample of 15 people. In analyzing her data, she states the following hypotheses: 
: ? = 25 and 
: ? ? 25. If ? = .05, which of the following is an appropriate critical value?
a. 1.709
b. 1.753
c. 2.060
d. 2.145
d. 2.145
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The students proofread one another's writing. If you consider Vygotsky's concept of internalization, you would be most likely to predict that the students will become ______
a. more willing to accept constructive criticism from others b. increasingly resentful of other people's opinions of their work c. increasingly dependent on others to find errors in their writing d. better able to proofread their own writing when they work independently
Miss Jackson seems to know everything about biology. She has completed many biology courses, she reads about biology and discusses biology with the other science teachers in the school. What type of expert knowledge does Miss Jackson demonstrate?
a. pedagogical b. context c. content d. pedagogical-content
Which of the following children exhibits behaviors that are characteristic of? Piaget's preoperational stage of? development?
A. Ross understands that half of a pizza may be divided into any number of pieces and still represent half of a pizza. B. Phoebe can solve abstract math problems in her head by visualizing the concepts and what they represent. C. Chandler thinks that the ball does not exist when he cannot see it. D. Monica thinks that four candies clustered next to each other are fewer than four candies spread out in a row.
Strategies to reduce the effects of physical disabilities (e.g., cerebral palsy), educational interventions, and behavioral supports are examples of:
A. Primary prevention strategies B. Secondary prevention strategies C. Environmental strategies D. Tertiary prevention strategies