Early Signs of Illness and Immunisations PSHE lesson
A primary PSHE lesson for Years 3 and 4 that helps UK teachers introduce early signs of illness and how immunisations work through a structured, ready-to-teach lesson. Pupils learn to recognise common signs that someone may be unwell, understand in simple terms how vaccines help protect health, and practise telling a trusted adult when something does not feel right. The lesson also touches on everyday habits, such as sleep, food and hygiene, that support staying well, giving pupils a practical starting point for talking about health and safety.
Keeping Safe & First Aid
Snapshot
Early Signs of Illness and Immunisations
This lesson gives teachers a structured way to introduce illness recognition and immunisation basics using simple, age-appropriate language.
Prep time:
5 to 10 minutes
Lesson length:
45 to 50 minutes
Key Focus
Recognising early signs of illness and understanding how immunisations help protect health
Lesson Format
Teacher-led discussion and structured activities
What pupils will learn
By the end of the lesson, students will be supported to:
Recognise
recognise common signs that someone may be feeling unwell, such as tiredness, a temperature or an upset tummy
recognise that everyday habits, including sleep, food and hygiene, can support the body's ability to stay well
recognise when a change in how they feel should be shared with an adult
Understand
understand in simple terms what immunisations do and why they are part of staying healthy
understand that noticing illness early can help someone get the right support sooner
Practise
practise describing how they feel using simple, clear language
practise the steps for telling a trusted adult when they feel unwell
practise simple habits that support staying healthy, such as handwashing
Who this lesson is for?
This lesson is designed for pupils in Years 3 and 4 who are building early knowledge of health, illness and safe help-seeking. It suits pupils who are ready to talk about how their body feels and begin to understand basic health ideas such as immunisation in simple, practical terms.
It is suitable for:
primary PSHE lessons
relationships education and health education sessions
pastoral care, circle time or form time
healthy lifestyles or wellbeing topics
introducing basic health and safety knowledge
Suitability should be based on more than age alone. Teachers should consider the lesson focus, pupil maturity, cohort needs, classroom culture, existing discussion norms and available support pathways.
Best used when
Use this lesson when students need clear, practical language for recognising unkind behaviour and knowing what to do next.
Introducing health and safety topics Use when pupils are beginning to learn about illness, health and basic body awareness.
Building on healthy habits learning Use when reinforcing sleep, food, hygiene and other everyday habits that support wellbeing.
Preparing for immunisation conversations Use when pupils are likely to hear about vaccines at school or through routine health programmes and need simple, factual context.
Practising help-seeking language Use when pupils need practice describing how they feel and telling an adult when something feels wrong.
Reinforcing classroom or pastoral routines Use when embedding simple steps for reporting feeling unwell during the school day.
Creating a structured PSHE discussion Use when you want a calm, teacher-led lesson about health, illness and staying safe.
The lesson can be used proactively with the whole class. It does not need to follow a specific incident.
Why this lesson matters
Pupils need simple, practical language for recognising when they or someone else feels unwell, along with a basic understanding of how immunisations support health. Building this knowledge early helps pupils feel more confident talking about how their body feels rather than guessing or worrying in silence. Understanding illness and immunisation is not only about responding when someone feels unwell. It also helps pupils build everyday habits, notice changes in how they feel and know the simple steps to take, including telling a trusted adult. This lesson supports a calm, matter of fact approach to health in the classroom, helping pupils see that looking after their body and asking for help are ordinary, sensible parts of school life.
How this lesson supports wellbeing
This lesson supports student wellbeing by building practical social and emotional skills students can use in everyday school life. It helps students develop:
Capability How the lesson supports it
Body awareness Pupils notice and describe how their body feels when unwell.
Health literacy Pupils build a simple understanding of what immunisations do.
Help-seeking Pupils practise telling a trusted adult when they feel unwell.
Healthy habits Pupils connect sleep, food and hygiene with staying well.
Self-care Pupils learn simple, practical steps that support their own health.
Communication Pupils practise describing feelings and symptoms clearly.
For teachers and school leaders, the lesson contributes to broader wellbeing, respectful relationships, child safety and pastoral care goals in Australian primary schools.
Teaching notes & Delivery Considerations
This lesson includes content about unkind behaviour, exclusion and asking adults for help. It should be taught with calm, clear discussion norms.
Before teaching
Remind pupils not to name classmates or share personal health stories
Frame the discussion around general examples rather than personal disclosures
Check whether any pupils may need sensitive handling around specific health information
Be prepared to follow your school's safeguarding procedures and speak with the designated safeguarding lead if a pupil discloses harm or says they feel unsafe.
During delivery
Use simple, factual examples such as feeling tired, having a temperature or an upset tummy
Keep the explanation of immunisations broad and age appropriate, without technical or clinical detail
Give pupils time to practise describing how they feel using simple language
Reinforce that pupils do not need to diagnose or manage illness themselves
Supporting safe discussion
Reinforce that telling an adult about feeling unwell is a sensible, responsible choice
Use general scenarios rather than personal disclosures
Follow school safeguarding procedures if any concerns arise
Adaptation options
Use partner talk or drawing for pupils who find open discussion harder
Extend the healthy habits discussion for classes covering food, sleep or hygiene in more depth
Spend more time on help-seeking language if pupils need extra support identifying trusted adults
This lesson builds general awareness rather than medical or clinical knowledge, and does not replace advice from a doctor, nurse or other health professional.
