• Journal for History of Mathematics
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• v.32 no.2
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• pp.79-93
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• 2019

Choi Yoon Sik is a person who can not be omitted when discussing the history of mathematics in Korea. He is a mathematician who led Korean mathematics community after liberation from Japan. However, he took interests in mathematics education in middle and high school also. Choi Yoon Sik should be remembered as a leading person not only in the history of mathematics but also in the history of mathematics education in Korea. Choi Yoon Sik thought that histo-genetic principle, intuitive principle, and practical principle are important in mathematics education by help of Okura Kinnosuke's view, with hope to reform the mathematics education in Korea. He also argued that mathematics has educational values.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.18 no.12
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• pp.45-51
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• 2000

• Proceedings of the Korean Vacuum Society Conference
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• 1998.06a
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• pp.53-53
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• 1998

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2004.11a
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• pp.100-100
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• 2004

• KCID journal
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• v.8 no.1
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• pp.140-149
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• 2001

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2011.06a
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• pp.217-217
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• 2011

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2011.06a
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• pp.218-218
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• 2011

• Proceedings of the Korean Society of Crop Science Conference
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• 2004.04a
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• pp.242-243
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• 2004

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2002.10a
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• pp.29-32
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• 2002

In order to investigate effect of irrigation on soil moisture and soybean growth, a experimental plot, which was shielded from precipitation was established. Four different irrigation rates were applied and soil moisture variations were monitored with TDR. Soybean yield and product quality are under scrutiny.

• Journal of Periodontal and Implant Science
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• v.16 no.1
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• pp.99.1-99.1
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• 1986