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* Teacher A: How does light come about? | * Teacher A: How does light come about? | ||
* Teacher B: What kind of process is involved in seeing light? | * Teacher B: What kind of process is involved in seeing light? | ||
* Teacher C: What is the speed of light ? | * Teacher C: What is the speed of light? | ||
* Teacher D: I think the previous question does not lead to a productive discussion since it only has one correct answer, so how about changing it to: ‘How do we find out about the properties of light such as the speed?’ | * Teacher D: I think the previous question does not lead to a productive discussion since it only has one correct answer, so how about changing it to: ‘How do we find out about the properties of light such as the speed?’ | ||
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