児童教育特講(理数系)の授業研究(1報)

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This report introduces a number of original lectures given by the author since 2002, which are tailored for the need of education majors. The lectures introduced in this paper focus on three scientific principles, which are demonstrated by experimentation. 1. Measuring the height of a treeThis lecture introduces the application of trigonometric function to measuring the height of objects, which cannot be easily measured otherwise. This particular subject is also designed to engage students through being outdoors.2. Archimedes and the CrownHere, the principle of buoyancy is applied to measure the material volume of a complex shape. With this information the material density can then be calculated. The result will show wheather Archimedes<CODE NUM=0092> crown is made of true gold or not.3. Measuring the weight of air In this lecture students try to measure the weight of air contained in plastic bottle. By changing the air temperature and volume under the condition of constant pressure, air weight per volume can be calculated.