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      Lesson details

      Learning outcome

      I can describe ways to manage my time online and keep a healthy sleep schedule.

      Key learning points

      1. Blue light is produced by electronic screens and disturbs sleeping patterns.
      2. Disturbed sleep can impact our physical wellbeing.
      3. Not using screens at least one hour before bed can help us to sleep.

      Keywords

      • Screen time - any time spent on a digital device with a screen, for example, a smartphone or laptop

      • Melatonin - a natural chemical in your body that helps control sleep by making you feel sleepy when it gets dark

      • Blue light - a bright light from screens that can keep you awake by tricking your brain into thinking it's still daytime

      Common misconception

      Looking at my phone helps me get to sleep.

      You may believe your phone is helping you to sleep, but without the blue light that comes from your phone you could get to sleep much faster, and have a deeper sleep. Try reading a book in bed instead.

      Teacher tip

      It could be useful for teachers to show pupils how to switch on 'night mode' on digital devices. This reduces blue light emissions which can reduce the melatonin supression when using devices before bed. However, be clear that this is not a 'fix' for pupils using screens before bed.

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      True or false? Everyone uses the internet in the same way.

      Correct Answer: False, F, Not true, Incorrect

      Q2.
      When we watch lots of short videos, which hormone is released in quick bursts?

      melatonin
      Correct answer: dopamine
      growth hormone

      Q3.
      Match the words to their definitions:

      Correct Answer:socialise,to talk, play or spend time with friends, family or new people

      to talk, play or spend time with friends, family or new people

      Correct Answer:long-term,something that takes a long period of time or has long-lasting effects

      something that takes a long period of time or has long-lasting effects

      Correct Answer:attention,notice taken of someone or something

      notice taken of someone or something

      Q4.
      Which of these is an example of a productive activity you could do online?

      watch funny videos
      Correct answer: learn a new language
      Correct answer: do research into a historical topic
      socialise with friends

      Q5.
      Which of these is a healthy choice in the long-term?

      watching hours of short videos each day
      only using social media to connect with friends
      Correct answer: setting limits on screen time activities

      Q6.
      Although finding entertainment online can be good, it is important to have a healthy in our online and offline activities.

      Correct Answer: balance, share, split

      6 Questions

      Q1.
      Match the words to their correct definitions:

      Correct Answer:screen time,any time spent on a digital device with a screen

      any time spent on a digital device with a screen

      Correct Answer:melatonin,a natural chemical in your body that helps control sleep

      a natural chemical in your body that helps control sleep

      Correct Answer:blue light,a bright light from screens that can keep you awake

      a bright light from screens that can keep you awake

      Q2.
      True or false? Dopamine helps us to sleep better at night.

      Correct Answer: False, F, Incorrect, Not true, No

      Q3.
      Even if you get to sleep after using a digital device, the sleep will likely be ...

      Correct Answer: restless, disturbed, poor

      Q4.
      To get a good night's sleep, screen time should be stopped at least __________ before bed.

      30 minutes
      Correct answer: 1 hour
      2 hours

      Q5.
      If you experience racing thoughts at night and constantly struggle to sleep, you should:

      ignore it
      Correct answer: speak to a trusted adult
      speak to friends
      Correct answer: speak to a medical professional

      Q6.
      Which of the following can help improve your sleep?

      drinking coffee in the late evening
      Correct answer: meditating before bed
      exercising right before bed
      Correct answer: reading a book

      To help you plan your 8 RSHE (PSHE) lesson on: Time online and sleep, download all teaching resources for free and adapt to suit your pupils' needs...