In Order to Determine the Effectiveness of His New Teaching

question 41

Multiple Choice

In order to determine the effectiveness of his new teaching method,Mr.Lewis gave his students a test to measure their knowledge before he implemented his new method.He also tested them after he implemented his new teaching method.Mr.Lewis is using a

• A)single-group posttest only design.
• B)non-equivalent control group posttest only design.
• C)single-group pretest-posttest design.
• D)non-equivalent control group pretest-posttest design.

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Definitions:

Dielectric Oil

A type of insulating oil often used to cool transformers.

Insulator

A material or device that resists the flow of electric current, used to prevent undesired current flow.

Cooling

The process of removing heat from an object or space, often to maintain a desired temperature.

Phase Current

The electric current flowing through one phase of a multi-phase system, like in three-phase electrical systems.