At Main Street Elementary School, the Third Grade Teachers Wanted

Multiple Choice

At Main Street Elementary School, the third grade teachers wanted to compare four different ways of teaching spelling. Each quarter all of the teachers used the same instructional strategy for teaching spelling and they used a different strategy each quarter. They recorded students' grades in spelling each quarter. This is an example of a:

A) Repeated measures design
B) Posttest only design
C) Randomized controlled trial design
D) Posttest only control group design