These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

School day delay

A change in circadian rhythms in adolescents means that asking them to wake early in the morning for school results in them being tired and less able to concentrate in lessons.

In this activity, based on the Teensleep study being conducted by The University of Oxford, students decide whether the school day should be delayed for GCSE students. They gather arguments for and against the action before presenting them in a class debate.

Learning Outcomes

  • Students can describe what a circadian rhythm is

  • Students recognise the sleep-wake cycle as a circadian rhythm

  • Students write arguments for or against an action and present them in a debate


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