This lesson explored how constant use of technology, phones, games, and social media, can affect concentration and brain function.
Pupils learned that the brain’s “attention system” is easily overloaded by notifications, multitasking, and rapid switching between apps.
When this happens:
Focus and memory can drop.
Tasks take longer and feel harder.
The brain releases dopamine (the “reward” chemical) every time a notification appears, training it to crave constant stimulation.
Over time, this can make it harder to focus on homework, reading, or even conversations without checking a screen.
A University of Texas study (2017) found that simply having a phone on the desk, even switched off, reduced attention and problem-solving ability.
A 2023 Nature study showed that short bursts of digital distraction increase “cognitive load,” meaning the brain has to work harder to stay on task.
Researchers call this the “switching cost”, every time you check a message, it takes your brain up to 20 minutes to regain full focus.
You don’t need to ban screens, just help children learn to manage them wisely.
Practical tips:
Create focus zones: Keep phones out of sight during homework or meal times.
Use “Do Not Disturb” or Focus Mode: Prevents notifications while working or sleeping.
Model mindful use: Let children see you putting your phone aside when talking or reading.
Short focus sessions: Encourage 25-minute “study bursts” followed by 5-minute breaks (Pomodoro technique).
Night-time habits: Avoid screens 30–60 minutes before bed to improve sleep and attention the next day.
Talk about dopamine: Explain how constant scrolling trains the brain to want instant rewards — just being aware helps kids self-regulate.
Internet Matters – Screen Time Guide: www.internetmatters.org/resources/screen-time-guide/
Childline – Managing Screen Time: www.childline.org.uk/info-advice/bullying-abuse-safety/online-mobile-safety/managing-online-time/
NHS – How screens affect sleep and mood: www.nhs.uk/live-well/sleep-and-tiredness/how-screens-affect-your-sleep/
Digital Wellbeing Family Agreement template: www.childnet.com/resources/family-agreement/