Ms. Iwata has a long-term goal for her science students: to consider what they have learned about science as they deal with issues and problems in their daily lives. What teaching strategy will best help her students retrieve relevant scientific principles when they need them the most?a. Maximize the use of abstract ideas and minimize the use of concrete materials. b. Make sure that students study those principles in a no-anxiety situation. c. Maximize the use of concrete materials and minimize the use of abstract ideas. d. Associate those principles with as many real-life situations as possible.

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject.a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher.wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners.acceptable only when the researcher’s irb grants a special waiver.