The following four junior-high-school science teachers are teaching the concept molecule to their students. In each classroom, some of the students are frequently using formal operational reasoning, whereas others are consistently using concrete operational reasoning. In which classroom are the concrete operational thinkers most likely to have difficulty understanding?
a. Mr. Armani lets students touch and manipulate concrete models of various molecules.
b. Mr. Bendetti lets students look at the same concrete models that Mr. Armani has used.
c. Mr. Carmen verbally describes how different elements are made up of different numbers of neutrons, protons, and electrons.
d. Mr. Davidson has students role-play being neutrons, protons, and electrons. The "neutron" and "proton" students huddle together in the middle of the room, and the "electrons" move around them.
C
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A random sample of five elementary schools is surveyed by sending trained people to interview the teachers in these schools. This is an example of
a. simple random sampling. c. cluster sampling. b. stratified sampling. d. quota sampling.
Students from low-SES homes are more likely than students from upper-SES homes to have difficulty studying because low-SES students typically
a. live in smaller, more crowded conditions. b. receive less supervision from parents. c. lack a good place to study. d. all of the above.
For a child to be able to understand that the amount of water in a tall, thin glass is still the same amount that was it was when it was in a short, fat glass, the child must be able to
A. classify the liquid as a substance that can be found in both a tall, thin glass and a short, fat glass. B. use hypothetico-deductive reasoning to solve the problem. C. decenter on the height of the liquid in the glass and pay attention to both the width of the container and the height of the liquid. D. understand that knowledge is not absolute but relative, so they can resolve contradictory information.
Parenting style and behavior used with school-age children does not change significantly from what parents did when children were preschool-aged
Indicate whether the statement is true or false