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Calik, Muammer; Ayas, Alipasa; Coll, Richard K. – Asia-Pacific Forum on Science Learning and Teaching, 2006
In this article we present details of a four-step constructivist-based teaching strategy, which helps students understand the dissolution of a gas in a liquid. The model derived from Ayas (1995) involves elicitation of pre-existing ideas, focusing on the target concept, challenging students' ideas, and applying newly constructed ideas to similar…
Descriptors: Constructivism (Learning), Teaching Models, Science Instruction, Chemistry
Çalik, Muammer; Ayas, Alipasa – Asia-Pacific Forum on Science Learning and Teaching, 2005
There are the only two studies available on the types of solutions--unsaturated, saturated, supersaturated, dilute and concentrate--in the related literature with respect to students' understanding. But, no study focuses on remediation of students' alternative conceptions with regard to the aforementioned concepts, based on the assumption that…
Descriptors: Logical Thinking, Learning Activities, Science Instruction, Chemistry