• 제목/요약/키워드: activities in school science

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과학동산 운영에 관한 질적 연구 (A Qualitative Study of Running질 Science Garden질)

  • 채동현;이수영
    • 한국초등과학교육학회지:초등과학교육
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    • 제21권2호
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    • pp.263-288
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    • 2002
  • 'Science Garden' is a science program that develops acquirements of science & technology at an early stage through experiential study and inspire the spirit of scientific inquiry by carrying out laboratory work, science movie, science lecture, scientific work, outdoor activities, computer classes and science experiment which is hard to do through the regular educational course. It is targeted grade 4,5,6 students during summer and winter vacation. 'Science Garden' is conducted by selective participation freely. It is a wholelistic activity that develops children's potential talents or creativities, improves interest and attitude toward science, and also gives opportunity for self-realization by extending capacity for inquiry to show each student's ability. This study is observed and is compared how it is conducted in elementary school using qualitative study. This study is used narrative observation, in-depth interview and document analysis. Objects of narrative observation are two elementary schools, each from Jellabukdo and Gyeonggido, and 7 teachers were interviewed in-depthly. Here are results of the study. 1 A teacher in school G never takes part in student activities, tends to be indifferent to classes, but focuses on observation and experiment in laboratory. And feedback or evaluation about student's activity is never done. On the other hand, a teacher in school S guides students to understand the principals of science on themselves, and wide variety forms of activities such as role playing, discussion, and games are being done. But an effort to evaluate student's activity is not being made properly. 2. Teachers set a high valuation on the need of 'Science Garden'. Observing the way of conducting 'Science Garden', usually teachers who is in charge of science for official work is selected as a teacher in charge, and groan under a heavy burden of conducting it without anyone's help. Participating students are selected by volunteering or teacher's recommendation, but because of low Participation rate, teachers have difficulty in conducting it. Plan for conducting ‘science Garden’ is made 20 days before it, after getting an official document from Office of Education, refering to booklets produced by National Jungang Science Institute, or data from Office of Education, and internet. Teachers evaluate rarely Most school principals have interest in 'Science Garden' but parents are not well aware of it, The budget is made at the same time with the plan, and scale is varied between 200,000∼500,000 won. Because of the improper way of selecting teacher in charge, difficulty in selecting students, heavy works caused by planning, conducting the program, as well as reporting teacher's work, and lack of parents' awareness, 'Science Garden' has been conducted formally and superficially. Next gives you direction to change, for the right way of conducting' Science Garden'. It is important to motivate competent teachers to instruct students actively. For students' active participation, They should publicize thoroughly beforehand, and develope 'Science Garden' program for teachers to be able to make better use of it. Evaluation of student activities and program should be done in the aspect of developing students’ faculties. Beside of school facilities, they need to put diverse local facilities and places to practical use for immediate natural experience. And not only separate schools but also associated form of schools to conduct it is necessary.

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Effects of High Taurocholic Acid Load on Liver Lysosomal Cathepsin Band D, and Acid Phosphatase Activities in Rats with Choledocho-Caval Shunt

  • Choi Hye-Jung;Kim You-Hee;Kwak Chun-Sik
    • 대한의생명과학회지
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    • 제10권4호
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    • pp.429-434
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    • 2004
  • The effects of intravenous administration of high concentration of taurocholic acid (TCA) on cathepsin B and D, and acid phosphatase activities in rat liver lysosome were studied. These liver lysosomal enzymes were determined from the experimental rats with choledocho-caval shunt (CCS). The activities of liver lysosomal cathepsin B and D, and acid phosphatase were found to be significantly increased in the CCS plus TCA injection group than in control group, such as group of CCS alone group. However, these hepatic enzyme activities did not change in the CCS plus tauroursodeoxycholic acid injection group. The above results suggest that TCA stimulates the biosynthesis of the lysosomal cathepsin B and D, and acid phosphatase in the liver.

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앉은 자세에서 머리 위치가 머리/어깨의 자세와 근활성도에 미치는 영향 (The Effect of Different Head Positions in Sitting on Head/Shoulder Posture and Muscle Activity)

  • 권중원;남석현;최용원;김중선
    • The Journal of Korean Physical Therapy
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    • 제25권4호
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    • pp.217-223
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    • 2013
  • Purpose: This study was to investigate whether the two different head postures, natural and ideal head posture, affect head/shoulder posture and muscle activity. Methods: Thirty healthy subjects with the forward head and round shoulder posture were participated in this study. This study utilized a within-subjects design with subjects being positioned into two sitting positions: natural head posture (NHP) and ideal head posture (IHP). Forward head angle (FHA) and forward shoulder angle (FSA) of each subject were measured for assessing the head/shoulder posture and muscle activities of upper trapezius (UT), lower trapezius (LT), and serratus anterior (SA) during the forward overhead reaching. Results: There were significant increases in both FHA and FSA after taking IHP, which showed greater angles than in taking NHP. In change of muscle activities, there were significant decreases in both LT and SA after taking IHP, which showed lower activities than in taking a NHP, whereas there was no significant change in UT. Conclusion: These findings demonstrate that postural alterations associated with forward head and rounded shoulder postures could alter scapular kinetics and muscle activity during the forward overhead reaching.

과제 학습을 활용한 수업이 초등학생들의 과학 탐구 능력과 과학적 태도에 미치는 효과 (The Effects of Task-Based Learning Strategies on the Science Process Skills and the Scientific Attitudes of Elementary School Students)

  • 권난주;이은희
    • 한국초등과학교육학회지:초등과학교육
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    • 제26권2호
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    • pp.141-148
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    • 2007
  • This study proposed task-based teaming strategies as a means of fulfilling the demands and goals of the 7th national science curriculum. Task-based learning is based on the use of a series of activities whereby a teacher presents students with tasks related to daily lift and the students solve the tasks by themselves using various methods and thought processes and then present and discuss their results with each other. The tasks are selected from the 6-grade science textbook, are reconstructed and are then given to the classes. The tasks include whole class activities as well as individual activities related to the interests, abilities, and concerns of the students. The purpose of this study was to verify the effects of task-based learning classes on the science process skills and the scientific attitudes of elementary school students, when applied to 6th grade students. For this, the task-based learning activities were applied to an experimental group and expository teaching was applied to the comparison group. Both groups were given a pre-post test on science process skills and scientific attitudes. The results indicate that task-based loaming is very effective in the development of science process skills and scientific attitudes.

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인간 중심 대안적 과학 활동 지도가 초등학생 및 지도 교사에게 끼치는 영향 (The Effects of Human-oriented Alternative Science Activities on Elementary School Students and Their Teacher)

  • 김희숙;전영석;홍준의;신영준;최정훈;이인호
    • 한국초등과학교육학회지:초등과학교육
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    • 제26권2호
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    • pp.171-180
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    • 2007
  • This study analyzed the effect of Human-oriented Alternative Science Activities(HASA) on a coaching teacher and the students who participated in this activity. Human-oriented alternative science activities were used in the experimental group and traditional teaching methods were used in the control group. In pretest and posttest sessions, both groups were evaluated using an academic achievement test, and an affective characteristics related science test. After the activity, questionaries regarding attitudes to science lessons were administered as well. The process of change (if any) which occurred in the science lessons of the experimental group teacher was also analyzed through the teacher's diaries. The results showed that application of HASA had a positive effect upon affective characteristics and attitudes to science classes held by the experimental group and teacher. However, the result of this study also showed that the variation between academic achievement of each group was statistically insignificant.

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고등학생들의 과학적 역량에 있어서 과학수업 활동과 학습동기의 역할 -경로모형의 검증- (The Roles of Science Classroom Activities and Students' Learning Motivation in Achieving Scientific Competencies: A Test of Path Model)

  • 임효진;장진아;송진웅
    • 한국과학교육학회지
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    • 제38권3호
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    • pp.407-417
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    • 2018
  • 미래 사회에서 요구되는 핵심역량을 기반으로 한 교육이 국내외에서 강조되면서, 과학 교과에서도 학생들의 '과학적 역량' 신장을 위한 교육과정과 교수학습 활동에 대한 관심이 높아지고 있다. 본 연구에서는 학생들의 과학적 역량 획득에 있어서 학교 과학수업 활동과 학생의 학습동기가 갖는 역할을 분석하고, 과학적 역량을 기를 수 있는 과학수업을 위한 시사점을 제안하고자 하였다. 이를 위하여, 이 연구에서는 한국 고등학교 학생들의 PISA 2015 결과 자료를 토대로 학교과학수업에서의 교수학습 활동이 학생의 학습동기 변수들을 매개로하여 과학적 역량에 어떤 영향을 주는지 통계적으로 분석하였다. 경로 분석 결과, 과학수업에서 상호작용이 강조된 활동과 실생활연계가 강조된 활동은 내재적 동기와 도구적 동기, 과학효능감을 유의하게 정적으로 예측하고 있었다. 이에 비해 학생의 주도로 이루어지는 탐구활동은 학습동기에 미치는 영향이 나타나지 않았다. 또한 과학에 대한 학습동기가 높을수록 과학적 역량의 세 영역인 '현상에 대해 설명하기', '과학탐구 과정을 평가하고 설계하기', '증거와 자료를 과학적으로 해석하기' 영역들의 점수가 높아졌다. 마지막으로 학교 과학수업의 실행은 학습동기를 통해 과학적 역량 획득에 간접적인 영향을 주고 있었는데, 구체적으로 상호작용이 강조된 활동은 내재적 동기를 통해서, 실생활과 연계된 수업 활동은 모든 학습동기 변수들을 통해서 성취에 긍정적으로 영향을 주고 있음을 알 수 있다. 끝으로 이러한 결과들이 학생의 과학적 역량 신장을 위한 학교 과학수업의 설계와 역할에 주는 시사점을 논의하였다.

시민과학 활동에 참여한 초등학생들의 과학 관련 정의적 특성 및 측정에 대한 인식 분석 (A Study on Science-related Affective Characteristic and Perception of Measurement of Elementary Students Who Participated in Citizen Science Activities)

  • 신정윤;박상우
    • 한국초등과학교육학회지:초등과학교육
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    • 제39권2호
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    • pp.168-182
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    • 2020
  • This study investigated how elementary students' science-related affective characteristics and their perception of measurement changed following participation in citizen science activities through a GLOBE program. Before and after the activities, test of positive experiences about science (PES) and perception of measurement were conducted with twelve fourth grade students. In addition, the teacher who participated in the GLOBE program with students observed and recorded the students' involvement, conversation and behavior to qualitatively analyze the value of the program and the students' perceptions of measurement. After the end of the program, an open questionnaire was conducted to fill any gaps in these observations. The results showed that citizen science activities had a positive impact on elementary students' science-related affective characteristics. In all areas of PES test, the post-test scores were higher than the pre-test results, and a statistically significant difference was seen in the 'science learning motivation' area. Furthermore, students' perception of the value and meaning of measurements was seen to deepen through ongoing global environmental data measurement activities. And their understanding of various units of measurement and numerous situations in which they might need to make measurements was also elaborated.

안산지역 중학생들의 원예활동 조사 (Research of Recognition on the Horticultural Activities of Middle School Students in Ansan, Korea.)

  • 윤현숙;홍종원;장유진;박천호
    • 화훼연구
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    • 제17권3호
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    • pp.214-219
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    • 2009
  • 중학생들이 인식하고 있는 원예활동에 대해 알아보기 위하여 안산시 소재 중학교 학생 429명(남 202명, 여 227명)을 대상으로 조사하였다. 원예활동에 대한 경험은 초등학교 이후(74%), 학교(남 43%, 여 41%)에서 가장 많은 경힘이 있었다. 이는 초등학교 교과과정에 도입된 환경교육과 사회적 영향이 있음을 보여주었다. 주로 경험해 본 원예활동은 식물재배활동(남 73%, 여 79%)이었으며, 남녀학생 모두 원예활동이 필요하다고 느끼는 이유는 환경교육의 필요성으로 인식하고 있었다. 원예활동 프로그램 중 해보고 싶다고 응답한 프로그램은 경험해보지 못한 식물이용활동 위주의 프로그램이었으며, 원예활동을 했을 때에 가장 흥미로웠던 점은 남학생의 경우는 식물이 자라는 과정(46%), 여학생은 생명의 소중함(36%)으로 응답하였다. 반면 가장 흥미롭지 못한 점은 남학생은 오래 기다린다(58%)와 여학생 지루하다(33%)로 응답하였다.

고관절 전치환술 환자의 임상관리도 수행 정도 (Analysis of Performance on Activities in Critical Pathway of Total Hip Replacement Surgery)

  • 임유진;정경인;정하윤;선정주;김윤경;최지경;이금례;김정숙;양진주;김혜자;장금성;최자윤
    • 성인간호학회지
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    • 제18권5호
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    • pp.819-827
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    • 2006
  • Purposes: The purpose of this study was to evaluate the extent of performance on activities in critical pathway (CP) according to eight domains and six admission days on nursing records of patients who received total hip replacement surgery. Methods: We reviewed 90 nursing records of patients who received total hip replacement surgery from June, 2004 to July, 2005 at C University Hospital. Data were collected using Hong's CP (2002) and were analyzed using ANOVA. Results: The domain of diet was valued the highest in CP performance scoring, followed by the domains of assessment, activities, and test. There were differences in the performance scores according to the period of admission in all of the domains. Among 132 activities in the CP, 18 activities were completely performed, of which most included activities belonging to the domain of assessment on the admission day. Twelve activities were never performed, of which most included activities belonging to the domain of treatment on the day of operation and the first day after operation. Conclusions: Therefore, further studies on the development of a new system to increase CP utilization and on updating the contents of CP from the best practice based on evidence is recommended.

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Antioxidant, Antimicrobial, and Cancer Cell Proliferative Inhibition Activities of Propolis

  • Kang, Ho-Jin;Ko, Ki-Wan;Lee, Ok-Hwan;Lee, Boo-Yong
    • Food Science and Biotechnology
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    • 제18권4호
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    • pp.1042-1045
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    • 2009
  • A commercial propolis was investigated in terms of its antioxidant, antimicrobial, and antiproliferative activities. The contents of total phenol and flavonoid of propolis were 8.3 and 6.6 mg, respectively. The reducing power of the propolis increased with concentration increasing. 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity was shown at 82.70% in 1,000 ${\mu}g/mL$ of the propolis. 2,2'-Azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging effect of antioxidant activity on the propolis was 35.64 g/sample. The propolis showed high antimicrobial activity against Bacillus cereus at all concentration of propolis. All of the cancer cell lines have 53-73% as effective growth inhibition. These results showed that the commercial propolis has potential antioxidant, antimicrobial, and cancer cell proliferative inhibition activities thus, propolis can be applied to the functional food, pharmaceutical, and cosmetic industry.