| Project/Area Number |
63580235
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
科学教育(含教育工学)
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| Research Institution | Naruto University of Education |
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Principal Investigator |
TAKAOKI Takeshi Naruto University of Education, Faculty of Science, Department of Biology, Professor, 学校教育学部, 教授 (60033792)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAOKI Takeshi Naruto University of Education, Faculty of Science, Department of Biology, Profe (60033792)
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| Project Period (FY) |
1987 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1989: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1988: ¥800,000 (Direct Cost: ¥800,000)
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| Keywords | Teaching material for biology / Growth-measuring instrument for microorganism / Volumeter for gas metabolism / Air-pollution teaching / Root pressure measurement / Simple respirometer / Use television for volumeter / Photosynthesis teaching / 光合成測定教材 / 微生物増殖測定 / 太陽電池 / 簡易比色計 / ガス代謝検客計 / 光合成・呼吸測定 / 教師実態 / 学校教材 / 一斉実験 |
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| Research Abstract |
I intended to study on the development of teaching materials of quantitative experiment in biological education. The summary of the results is as follows:
(1) Developmental studies on a growth-measuring instrument of microorganisms: The instrument is constructed with solar cell, circuit tester, simple amplifier of hand making, and circular fluorescent lamp. The growth curves of Chlamydomonas reinhardtii and Saccharomyces cerevisiae were measured using the equipment, and the results obtained were similar to those obtained photometrically using a traditional photometer. The distinguishing marks of this instrument are 1) Density of the microorganisms can be measured as growing state in culture vessel without taking out some of the suspension medium. Therefore, the aseptic manipulation and the loss of suspension medium can be eliminated. 2) Operation is simple, and it takes 1 - 2 minutes for one measurement. 3) It's inexpensive and no necessity of expert skill for construction of the equipm
… More
ent. 4) Large space and dark room are unnecessary.
(2) Demonstration experiment using a television camera for volumetric measurement of photosynthesis and respiration: A droplet of food color solution was used as an indicator of the volumeter, and seven volumeters were imaged on the television screen. Investigators and students can get data from the screen. Seven neutral optical filters of different transmissivity were prepared for seven volumeters to measure photosynthesis rate under different light intensities at the same time. Application of this filters on the volumeter made the measurement of photosynthesis rate under different light intensity possible to compare between a sun leaf and a shade leaf within a school period.
(3) Experiment for measurement the effects of sulfur dioxide on plants: Using the simple volumetric respirometer (Takaoki & Nakagishi, 1988) and the simple sulfur-dioxide fumigation method (Takaoki & Mitani, 1986), the effects of sulfur dioxide on respiration rates of germinating seeds and petals were observed. Visible injury of sulfur-dioxide fumigation on petals of morning glowry was observed even when fumigation was made three minutes. This experiment is available for children of primary school.
(4) Equipment for measuring root pressure in a few minutes: This method is manometric and extremely rapid (Takaoki, 1965). The measurements using this method is very scarce. The effects of respiratory inhibitors and uncouplers on the root pressure of corn root segments were observed. It was recognized that this method is available not only for research on water absorption by root but also for education. Less
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