Which of the following is a serious threat to the internal validity of the nonequivalent-groups posttest-only design?
a) Without a pretest, it is difficult to control for selection differences.
b) Treatment group results cannot be compared to control group results.
c) The lack of a control group makes it difficult to draw conclusions.
d) Random selection of participants to each group can result in equivalent groups.
a
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A company's code of ethics or code of business conduct describes how the leaders must behave, not the employees
a. True b. False Indicate whether the statement is true or false
In the staff room at lunch, Mr. Jones discussed the poor performance of Sally Bates, a grade six student, with her previous year's teacher with the view to finding a solution to Sally's learning problems. Is this professionally appropriate?
a. Yes, because a teacher has a responsibility to try to help students experiencing difficulty. b. Yes, because both Mr. Jones and the other teacher were in a private setting. c. No, because the behavior violated the student's right to privacy.
Name two of the major guidelines to consider when developing computational strategies for fractions. Describe an instructional sequence that would support each guideline
What will be an ideal response?