DrDow Jones Wants to Know Whether a Problem-Based Approach to Teaching

question 18

Multiple Choice

Dr.Dow Jones wants to know whether a problem-based approach to teaching economics will result in higher academic performance than his traditional method.Of the six sections of Economics 101 at his university, Dr.Jones randomly assigns three sections to the traditional method and three sections to the problem-based method for Unit 1 of the course.Then all sections switch instructional method for Unit 2.He plans to compare the performance of the two groups of sections on their Unit 1 and Unit 2 exams.This study employs a ______ design.

• A)within subjects (repeated measures)
• B)quasi-experimental
• C)true experimental
• D)ex post facto

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Definitions:

Erosion

The transportation of sediment, soil, rocks, and other materials by the actions of wind, water, or ice, often leading to the reshaping of landforms.

Angle of Repose

The steepest angle at which a sloping surface formed of a particular loose material is stable.

Slope Failure

The sudden or gradual collapse of a slope that is too steep for its material to resist the pull of gravity.

Calcium Carbonate

Calcium carbonate is a chemical compound, CaCO3, found in rocks as the minerals calcite and aragonite and is the main component of shells of marine organisms, snails, and eggs.