Two teachers who are friends teach math at different high schools. At a conference, they learn about a new program for teaching trigonometry

They decide to test it by having one teacher use it in her class and the other use the traditional program, then compare their students' scores on the AP trigonometry test. This is an example of which experimental design?

a. one-group posttest-only design
b. one-group pretest-posttest design
c. non-equivalent posttest-only design
d. non-equivalent before-after (pretest-posttest) design


C

Political Science

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