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Il-Sun Lee
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Journal Articles
The American Biology Teacher (2013) 75 (5): 345–348.
Published: 01 May 2013
Abstract
Cultivation of microorganisms such as fungi and bacteria is often not included in scientific inquiries conducted in school because of the difficulty of manufacturing a suitable medium. A method using dry rehydratable film to reduce the need to manufacture a suitable medium and shorten incubation time was developed as an efficient microbial testing method. Using this method, students can easily perform experiments on microorganisms in schools where time and space are limited. For example, we carried out an inquiry on the possibility of drinking refrigerated milk that is already past its expiration date. Through this activity, we could raise issues related to the current shelf-life labeling system implemented in Korea. In addition, the method can measure microorganisms in several ways through air, direct contact, and indirect contact, making the procedure easier to use in scientific activities at school.
Journal Articles
The American Biology Teacher (2013) 75 (2): 121–126.
Published: 01 February 2013
Abstract
The purpose of this study was to design a teaching method suitable for science high school students using atomic force microscopy. During their scientific inquiry procedure, high school students observed a micro-nanostructure of a biological sample, which is unobservable via an optical microscope. The developed teaching method enhanced students’ science-learning motivation and scientific creativity.
Journal Articles
The American Biology Teacher (2011) 73 (8): 485–492.
Published: 01 October 2011
Abstract
The purpose of this article is to introduce and develop a teaching method and process that incorporates quick response (QR) codes and smartphones into field trips for biology classes. The teaching process using QR codes and smartphones consisted of four steps. The first step was the selection of a suitable field study site and identification of species at the site. For this study, a tidal mudflat in Korea was selected and 24 species were identified at the field site. The second step was the generation by the instructor of QR codes for the 24 species, construction of QR code sheets for the species, and installation of a "QR code decoding app" on students' smartphones. In step 3, students explored and identified species at the field study site using the QR code sheets and shared their results with classmates via a social network system (SNS). The final step was the presentation and discussion of results in follow-up classes. The teaching method developed for this study led to active classroom discussion via smartphone social-networking services. Besides detailing the "scan and learn" teaching method and process, the paper offers a quick checklist for teachers and simplified specifics for the creation of a customized and illustrative field-study guidebook that motivates students.