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Social, Personal and Health Education (SPHE) · 2nd Year

Active learning ideas

Sleep and Screen Time

Sleep is the 'forgotten' pillar of health, yet it is arguably the most critical for teenage brain development. This topic addresses SPHE Learning Outcomes 2.4 and 2.5, investigating the relationship between screen time, sleep quality, and mental health. Students explore the science of the 'blue light' effect and the importance of the circadian rhythm. For second-year students, who are often gaining more autonomy over their devices, this is a timely intervention.

NCCA Curriculum SpecificationsSPHE LO 2.4: Explain the importance of sleep for physical and mental wellbeingSPHE LO 2.5: Evaluate personal habits regarding screen time
20–45 minPairs → Whole Class3 activities

Activity 01

Inquiry Circle45 min · Small Groups

Inquiry Circle: The Sleep Science Fair

Groups research a specific aspect of sleep (e.g., Blue Light, The Sleep Cycle, Caffeine, or Dreams). They create a one-page 'fact sheet' and present it to the class in a mini-fair format.

Why is sleep crucial for teenagers?
AnalyzeEvaluateCreateSelf-ManagementSelf-Awareness
Generate Complete Lesson

Activity 02

Think-Pair-Share20 min · Pairs

Think-Pair-Share: Screen Time Reality Check

Students check their actual screen time stats on their phones (if available) or estimate them. They share with a partner one app they could 'swap' for 15 minutes of extra sleep and how they would do it.

How do screens impact our sleep patterns?
UnderstandApplyAnalyzeSelf-AwarenessRelationship Skills
Generate Complete Lesson

Activity 03

Simulation Game30 min · Small Groups

Simulation Game: The Perfect Bedtime Routine

In small groups, students are given a 'messy' evening schedule for a fictional student. They must rearrange the activities (homework, gaming, shower, reading) to create the optimal 'wind-down' routine for better sleep.

What steps can we take to improve our sleep hygiene?
ApplyAnalyzeEvaluateCreateSocial AwarenessDecision-Making
Generate Complete Lesson

A few notes on teaching this unit


Watch Out for These Misconceptions

  • You can 'catch up' on sleep at the weekend.

    Students often think sleeping until noon on Sunday fixes a week of late nights. Through a 'Sleep Bank' activity, teachers can explain that 'social jetlag' actually disrupts the body's internal clock even further.

  • Being on your phone helps you 'wind down' before bed.

    Many students use scrolling as a way to relax. Peer discussion about how the brain reacts to 'infinite scroll' and blue light helps them see that their brain is actually being stimulated, not rested.


Methods used in this brief