The development of an inquiry experimental system using natural fibers

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  • 天然繊維を利用した探究的な実験系の開発
  • テンネン センイ オ リヨウ シタ タンキュウテキ ナ ジッケンケイ ノ カイハツ

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Abstract

<p>There are many types of fibers come from creatures. However, in today’s high school biology, there is no complex educational program to learn fibers. Therefore, in this study, we developed an inquiry experimental system using natural fibers and practiced this program. First, as a plant fiber, we started growing cotton and as an animal fiber, used cocoon silk as teaching materials. Then, we also developed an experimental system using dry cocoons (spider, GFP) of non-living transgenic silkworms. With this system we succeeded in extracting DNA from the pupas about one year and determined whether they include recombinant DNA by PCR. By measuring the tensile strength of the fiber from each cocoon, we confirmed that the silk fiber from the spider cocoon was tough. In addition, by comparing the reactions of the silk fibers from each cocoon and cotton to each reagent, I made the students realize the differences among them as a substance. In this way, through these experiments of natural fibers we can integrate various studies, such as botany, entomology, biotechnology and clothing materials engineering. We can definitely say that the experimental system will make the students have different kinds of interests.</p>

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