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以問題導向學習探討國小四年級學童能源認知與節能態度之研究 = A Study of Problem-Based Learning Strategy on Energy Cognition and Conservation for Fourth Graders /
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以問題導向學習探討國小四年級學童能源認知與節能態度之研究 = A Study of Problem-Based Learning Strategy on Energy Cognition and Conservation for Fourth Graders /
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