The Effects of Free Inquiry Method Based on PBL on Science Process Skill and Self-Directed Learning Characteristics (PBL적용 자유탐구 기법이 과학탐구능력과 자기주도적 학습특성에 미치는 효과)
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- Journal of the Korean Society of Earth Science Education
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- v.3 no.3
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- pp.239-247
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- 2010