Group Interaction: One Student Dominates
Four students complete a school-assessed interactive task in Portuguese: a 10-minute group discussion on whether social media harms teenagers. The rubric rewards initiating ideas, responding to others, sustaining the exchange, and range of language. During the discussion, Bruno speaks for roughly six of the ten minutes, interrupts twice, and answers questions directed at others. Mei speaks twice, both times briefly agreeing with Bruno. Tomas asks three genuine questions and builds on two answers. Priya corrects a factual error politely and offers a counter-argument. The teacher must award individual marks, not a group mark, and the recording will be kept for moderation.
1. How should the teacher differentiate the four marks using the rubric criteria?
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Each student is marked on their own contribution, evidenced from the recording. The rubric criteria are individual, so airtime is not the same as quality.
- Bruno: high on initiation and range, but interrupting and answering questions put to others breaches the interactional criteria (turn-taking, responding appropriately). His mark should reflect strong language with a deduction for interaction management. Dominating is not the same as excelling.
- Tomas: strong on responding and sustaining - three questions and two build-ons show genuine interaction. His range may be narrower, so he may score lower on language range but high on interaction.
- Priya: strong on responding with substance (polite correction, counter-argument) - this demonstrates both interaction and higher-order language functions.
- Mei: minimal contribution. Two brief agreements do not evidence initiating, sustaining, or range. Her mark should be low even though she was present and polite.
The teacher should annotate the recording with timestamps supporting each judgement so moderation can verify the differentiation.
2. What should the teacher do before the task next time to reduce the risk of one student dominating?
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Prevention is a design issue, and the teacher should document adjustments made.
Practical measures:
- Give each student a defined role or a required contribution (e.g., each must introduce one point and respond to at least two others), stated in the task instructions.
- Use a shorter discussion with structured rounds so airtime is distributed by design.
- Teach and rehearse turn-taking phrases in Portuguese before the assessed task, so interruption is a language choice rather than a habit.
- Seat students so the teacher can see all faces and signal subtly if one student monopolises.
- Tell students the criteria explicitly - that responding and sustaining count as much as initiating - so they know dominating does not maximise marks.
- Keep the recording and the annotation habit, because moderation will look for evidence that each individual's mark is defensible.