Human Lifespan Intro

Overview

In this first session of the unit, students explore the main stages of human development and the typical milestones within each stage. They connect these milestones to biological change and discuss how individuals’ experiences may vary.

Learning intentions

• WALT understand the stages of human development from early life to later life.
• WALT identify key developmental milestones commonly associated with each stage.
• WALT explain how biological changes link to growth, wellbeing and health across the lifespan.
• WALT reflect on how personal milestones can differ from expected patterns.

Success criteria

• I can name major stages of the human lifespan and describe what typically changes in each stage.
• I can list at least three key milestones for one or two life stages (e.g., physical, emotional, social).
• I can discuss, respectfully, why milestones may occur earlier or later for different people.
• I can complete an exit ticket showing clear understanding of today’s concepts.

Curriculum links

• Relationships education: understanding changes in relationships and personal development across time.
• Health education: understanding how health and wellbeing can change over the lifespan.
• PSHE knowledge and skills: recognising influences on wellbeing, and communicating accurately and respectfully.
• Safeguarding and wellbeing expectations: encouraging help-seeking and respectful dialogue in discussion.

Lesson structure (60 minutes)

1. 0–5 min: Settle & WALT

• Share the lesson WALT and success criteria. Explain that “milestones” are common indicators, not strict rules.
• Quick reassurance: students can keep “personal milestones” private if they prefer.

2. 5–15 min: Timeline activity (Engage)

• Give students a simple stage-strip set (e.g., early years, childhood, adolescence, early adulthood, later life).
• In pairs, they order stage-strips and add one milestone per stage they already know (no research yet).
• Teacher circulates, prompts with “What changes physically/mentally/socially?” and collects misconceptions.

3. 15–28 min: Build knowledge (PowerPoint input)

• Teach the stages and typical milestones using clear, age-appropriate language:
• Physical growth and puberty (adolescence)
• Identity, independence and relationship change (adolescence/young adulthood)
• Brain development and risk behaviours (adolescence/early adulthood)
• Adult responsibilities and health maintenance (early/later adulthood)
• Ageing-related changes and support (later life)
• Explicit link to biological sciences: hormones, growth patterns, and how health behaviours affect later outcomes.

4. 28–42 min: Group discussion (Transformation)

• Students choose one stage (their choice) and complete a “Milestones: Then/Now/Me” discussion scaffold.
• Whole-class mini-share: each group presents one milestone category (physical/emotional/social) and one reason people may differ (family, health, environment, culture, disability, timing).
• Teacher models respectful language and corrects inaccuracies.

5. 42–50 min: Independent learning task set

• Set the research task: students select a famous figure and research developmental milestones at different ages (e.g., achievements, training, education transitions, health-related public information where available).
• Remind them to use reliable sources and focus on development indicators, not private personal data.

6. 50–57 min: Recall & review

• Students do a quick “Milestone sort” on a slide/handout: teacher reads statements; class categorises them into the correct life stage and milestone type.
• Clarify any confusion and re-emphasise that milestones are ranges.

7. 57–60 min: Exit ticket

• Exit ticket (individual): answer two prompts:
• Name three stages and one milestone for each.
• Explain one way biological change and health can affect wellbeing across the lifespan.

Resources

• PowerPoint: “Human Lifespan Stages and Milestones” with milestone categories
• Stage-strip cards (cut-outs) for the timeline activity
• Discussion scaffold handout: “Physical / Emotional / Social milestones”
• Teacher statements/cards for the milestone sort
• Exit ticket template (printed or on paper)
• Assessment grid (teacher notes) for quick marking priorities
• Research guidance sheet: how to choose reliable sources and summarise milestones respectfully
• Dyslexia-friendly reading options: printed slides in 14–16pt font, colour-highlighted headings, and short “chunked” text versions (audio read-aloud if available)

Assessment

• Formative assessment through teacher observation during timeline and group discussion (check for correct stage understanding and milestone categories).
• Exit ticket used to identify gaps in knowledge (stages, milestone types, and biological link to wellbeing).
• Teacher follow-up in next lesson based on common misconceptions (e.g., mixing physical and social milestones).

Differentiation

• Support:
• Provide sentence starters for discussion (e.g., “A common physical milestone in adolescence is…”, “People may differ because…”).
• Offer an adapted timeline with fewer stage strips and a word bank for milestone categories.
• Use pre-taught vocabulary in simple terms (milestone, puberty, wellbeing, ageing).
• Extension:
• Challenge advanced learners to compare two stages and explain how early health behaviours could influence later wellbeing (with one example).
• Ask them to add a “non-typical development” consideration in general terms (e.g., disability, illness, neurodiversity) without stereotyping.
• EAL:
• Use dual-language support where available (key terms card), plus visuals for each milestone category.
• Allow verbal answers recorded by a peer or teacher if writing is a barrier.
• SEN / Dyslexia:
• Chunk text into short sections with clear headings; provide a “read-me” version of the PowerPoint text.
• Offer audio read-aloud for key slides and allow the exit ticket to be completed in short bullet points.

Extension (optional)

• Ask students to write a 150–200 word “lifespan reflection” linking one biological change (taught today) to a wellbeing outcome, using evidence from their research on a famous figure.