Discovery-Based Teaching Two biologyinstructors set out to evaluate the effects
Chapter 14, Problem 39(choose chapter or problem)
Discovery-Based Teaching Two biologyinstructors set out to evaluate the effects ofdiscovery-based teaching compared to the standardlecture-based teaching approach in the laboratory.13The standard lecture-based approach provided a list ofinstructions to follow at each step of the laboratoryexercise, whereas the discovery-based approach askedquestions rather than providing directions, and usedsmall group reports to decide the best way to proceed inreaching the laboratory objective. One evaluation of thetechniques involved written appraisals of both techniquesby students at the end of the course. The comparisonof the number of positive and negative responses forboth techniques is given in the following table.Positive NegativeGroup Evaluations Evaluations TotalDiscovery 37 11 48Control 31 17 48a. Is there a significant difference in the proportion ofpositive responses for each of the teaching methods?Use a .05. If so, how would you describethis difference?b. What is the approximate p-value for the test in part a?
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