재조합 DNA 개념학습을 위한 교실 실험수업과 실험실 실험교육

Abstract

In this study, two experimental approaches, one simply carried out in a classroom and the other in a laboratory, have been conducted to teach the concept of recombinant DNA. The experiment in a classroom was a simple process of model construction of recombinant DNA using colored papers and was applied to university freshmen for only one hour. Through the activity, the students generally showed a little increase in understanding recombinant DNA. They were classified into two groups such as higher and lower group according to their achievements, and there was a significant increase in a lower group (p=0.000). This result showed that the model construction experiment helped the lower group students learn recombinant DNA. In the next experiment, recombinant DNA technology was applied to scientifically gifted high school students with developed laboratory teaching materials. The result showed that they successfully performed all experiments. Through laboratory activities they showed a significant increase in understanding the concepts of genetic engineering (p=0.007). In the survey of questionnaire, they reported to be strongly influenced on their intellectual inquiry and interest of biology through the laboratory activities of recombinant DNA technology. In this study, the laboratory experiment showed a higher significant increase in their achievements than the model construction one in a classroom did. However, the model construction process was very efficient because it was inexpensive and needed only a little time. Finally, this study suggested that at least one experiment of the two approaches should be applied to the students for learning the recombinant DNA in a biology class, considering the financial condition of school, laboratory equipments and time schedules.