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초등학교 저학년 아동들의 증거로부터 가설을 분화하는 능력
이문남(Moon Nam Lee),주혜은(Hye Eun Chu) 한국아동학회 2001 兒童學會誌 Vol.22 No.4
This study is to investigate whether young Korean children have understanding for testing hypothesis. Questions explored are; First, do children have notions of testing hypothesis? Or, do they just produce an effect? Second, choosing between conflicting hypotheses, can children distinguish between experiments that would produce conclusive and inconclusive evidence? For this study, 15 first grade and 15 second grade children in elementary school located in Kyunggi area near Seoul participated. Data collection and analysis were based on interviews with children for two weeks. Children were presented two conflicted hypotheses to decide which one is correct through conclusive evidence and inconclusive evidence in the interview. The results showed that children(1st: 93.3%, 2nd: 81.3%) of each grade can distinguish between hypothesis and evidence to do testing hypothesis, and distinguish between conclusive and inconclusive evidence. In conclusion, most young children have understanding of testing hypothesis based on their familiar experiences, so it was possible for them to differentiate hypothesis from evidence in certain situations.
초등학교 저학년 학생들의 환경소양 및 환경소양에 영향을 미치는 변인
주혜은 ( Hye Eun Chu ),이은아 ( Eun A Lee ),고희령 ( Hee Ryung Ko ),신동희 ( Dong Hee Shin ),이문남 ( Moon Nam Lee ) 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.3
The purpose of this study was to investigate young children`s environmental literacy level and variables that affected their environmental literacy. Of the students, 969 in third grade from big cities, medium sized cities and rural areas participated in this study, and their environmental literacy was measured through 69 questions consisted of 24 items for knowledge, 22 for attitude, 16 for behavior, and 7 for skills with 13 demographic variables. Eighty minutes were given to answer the questions. Statistical analysis was conducted on each of the categories (knowledge, attitude, behavior, skill) that make up environmental literacy and multivariate analysis variance (MANOVA) was also conducted to investigate variables that affect environmental literacy. Results indicated that the correlation between attitude and behavior is the highest. Also, it was found that a demographic variable might affect one, two, or sometimes all categories of the environmental literacy.
李文男,金琦連 단국대학교 1989 論文集 Vol.23 No.-
Single crystals of LiH_3(SeO_3)_2 have been grown from saturated solution by isothermal evaporation method. Dielectric constants and loss tan δ were measured within the range of temperature between 20℃ and 100℃ at 1 Vrms and 1 ㎑. The values of dielectric constant increase very rapidly for temperatures above 90℃. The width of domain observed from reflection electron microscope was 3.3ц to 7.0ц.