Explain what is deficient in each of the following proposed experiments, and explain how you would improve the experiment.
Two forms of a lab exercise are to be compared. There are 10 rows in the classroom. Students who sit in the first five rows of the class are given the first form, and students who sit in the last five rows are given the second form.
The effectiveness of a leadership program for high school students is evaluated by examining the change in scores on a standardized test of leadership skills.
An innovative method for teaching introductory biology courses is examined by using the traditional method in the fall zoology course and the new method in the spring botany course.