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      Changes during puberty

      Lesson details

      Learning outcome

      I can describe changes in humans as they develop through adolescence.

      Key learning points

      1. Adolescence is the stage of growth and development between childhood and adulthood
      2. Puberty is when a child's body begins to develop and change as they become an adult and are able to reproduce
      3. Puberty usually happens between ages 10 and 14 for girls, and ages 12 and 16 for boys
      4. Signs of puberty for girls include changing body shape, additional body hair and starting periods
      5. Signs of puberty for boys include changing body shape, additional body hair and a deeper voice

      Keywords

      • Human - People are a type of animal called humans.

      • Adolescence - Adolescence is the stage of the human life cycle that occurs between childhood and adulthood.

      • Adolescent - An adolescent is a human in the process of developing from a child into an adult.

      • Puberty - Puberty is a time when human bodies go through changes to become adults that are able to reproduce.

      • Reproduce - When living things reproduce they create their offspring.

      Common misconception

      Pupils may think that everyone goes through, or should go through puberty, at the same time.

      Using the lesson resources to support, explain that everybody is different and will go through puberty at different times.

      Teacher tip

      Try and get hold of photos of familiar staff members during childhood and adolescence so children can enjoy seeing how these familiar people have changed over time and during the period of adolescence.

      Equipment

      None required

      Content guidance

      Depiction or discussion of sensitive content

      Supervision

      Adult supervision recommended

      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.
      Which of these animals is a mammal?

      Crocodiles
      Correct answer: Humans
      Penguins
      Clownfish

      Q2.
      Humans become toddlers when they are around ...

      Correct answer: one year old.
      two years old.
      five years old.
      ten years old.

      Q3.
      At what stage in their development do humans usually stop growing?

      Baby
      Toddler
      Child
      Correct answer: Adult

      Q4.
      What can human adults do that human children cannot?

      Walk
      Communicate
      Correct answer: Reproduce
      Eat a range of foods

      Q5.
      Between what ages are young humans considered to be children?

      0-1 years old
      1-3 years old
      Correct answer: 3-12 years old
      12-20 years old

      Q6.
      Match the approximate age with the stage of development in young humans.

      Correct Answer:6 months,Start eating solid food

      Start eating solid food

      Correct Answer:12 months,Start learning to walk

      Start learning to walk

      Correct Answer:3 years,Start speaking in short sentences

      Start speaking in short sentences

      Correct Answer:4 years,Start learning to recognise letters and numbers

      Start learning to recognise letters and numbers

      6 Questions

      Q1.
      Starting with the earliest, order the stages of human development.

      1 - Baby
      2 - Toddler
      3 - Child
      4 - Adolescent

      Q2.
      What is puberty?

      Correct answer: The time when human bodies change to be more like adult bodies
      A type of body hair grown by humans
      The name for a group of organs inside a human’s body
      The time humans are aged from 13-19 years old

      Q3.
      Match the stage of human development to the body change.

      Correct Answer:baby,Able to digest foods other than milk

      Able to digest foods other than milk

      Correct Answer:toddler,Start learning to walk

      Start learning to walk

      Correct Answer:child,Baby teeth fall out

      Baby teeth fall out

      Correct Answer:puberty,Body hair grows in new places, such as under the arms

      Body hair grows in new places, such as under the arms

      Q4.
      Which of these changes happen to both boys and girls during puberty?

      Periods start
      Correct answer: Body hair grows in new places
      Voice deepens significantly
      Correct answer: Changing body shape

      Q5.
      When does puberty usually start for girls?

      Between the ages of 8 and 12
      Correct answer: Between the ages of 10 and 14
      Between the ages of 12 and 16
      Between the ages of 15 and 20

      Q6.
      When does puberty usually begin for boys?

      Between the ages of 8 and 12
      Between the ages of 10 and 14
      Correct answer: Between the ages of 12 and 16
      Between the ages of 15 and 20

      To help you plan your 5 science lesson on: Changes during puberty, download all teaching resources for free and adapt to suit your pupils' needs...