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A circuit diagram shows a battery with two bulbs connected to the battery in parallel, in one case with a switch between the bulb and the battery.

Evidence from an example hinge-point question

A teacher gave the above circuit diagram to her class.

The circuit diagram shows a battery with two bulbs connected to the battery in parallel, in one case with a switch between the bulb and the battery. The teacher asks this hinge-point question:

When the switch is closed, which bulb or bulbs will be lit (or not lit)?

    A. Bulb 1

    B. Bulb 2

    C. Neither bulb

    D. Both bulbs

  1. What would these different answers, if given, tell you about what a student knows, partly knows or doesn’t know?

  2. What would be your next steps, depending on the mix of answers given by a group of students?

Make a brief note in response to each of these two questions before moving on to the next step in the course.

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This article is from the free online course:

Assessment for Learning in STEM Teaching

National STEM Learning Centre

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