Step three: Plan a research strategy
The research design of a CAR study may take many forms, ranging from a pretest-posttest design to a
comparison of similar classes to a descriptive case study of a single class or student. Both quantitative and
qualitative methods are appropriate. The tightly controlled experimental designs of traditional research are
rarely possible in a natural classroom setting, so CAR relies on the triangulation of data to provide validity.
To triangulate, collect at least three types of data (such as student test scores, teacher evaluations, and
observations of student behavior). If all data point to the same conclusions, you have some assurance of
validity.
Step three: Plan a research strategyThe research design of a CAR study may take many forms, ranging from a pretest-posttest design to acomparison of similar classes to a descriptive case study of a single class or student. Both quantitative andqualitative methods are appropriate. The tightly controlled experimental designs of traditional research arerarely possible in a natural classroom setting, so CAR relies on the triangulation of data to provide validity.To triangulate, collect at least three types of data (such as student test scores, teacher evaluations, andobservations of student behavior). If all data point to the same conclusions, you have some assurance ofvalidity.
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