Use the Guidelines to Evaluate the Study

Use the guidelines to evaluate the study. Discuss flaws that you see in the study.
-An educational researcher wishes to compare the effectiveness of two different math
textbooks. She has the tenth graders at one school use the first book for one year and the
tenth graders at another school use the second textbook for one year. At the end of the
year, she gives the same math test to both classes and compares the results.