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New NCERT textbook · Class 7 Science

Curiosity, period by period — fitted to your timetable.

Tell Meyy your periods and their length; it plans every chapter of Curiosity to fit, and you tick off sections as you teach.

Chapter 6 · Period 1 of 11 · 40 min

Noticing Change: The Teenage Snapshot

Observe and describe physical changes of adolescence · Discovery approach

This opening unit orients students to the chapter's central subject — the changes of adolescence — using the chapter's own Activity 6.1. Watch for students who conflate changes that are purely social or cultural with biological ones; gently steer the category sort toward observable physical changes without dismissing other entries. If the class is hesitant to write personal observations, reassure them that anonymity is real and that no slip will be read aloud with any student's name attached.

0-8Teacher introduces the chapter's opening scenario — Venkatesh and Devyani noticing changes in each other — and poses the guiding question: what kinds of changes happen as children grow into adults?
8-20Students individually write anonymous observations of changes they notice in peers across grade levels on slips of paper, which are folded and placed in a container.
20-35Teacher draws slips randomly and sorts the observations into emerging categories (height, voice, body structure, facial features, skin, behaviour) on the board with student input.
35-40Class identifies the most commonly noted changes and teacher introduces the term adolescence and its approximate age span of 10 to 19 years.
Assessment

Competency (C-4.3). Describing biological changes (growth, hormonal) during adolescence and measures to ensure overall well-being.

Learning outcome. The student can describe the observable physical changes that occur during adolescence, classify them by who they affect, and name the body structure responsible for each change.

During adolescence, both boys and girls develop hair in the armpits and pubic region, but only boys develop moustaches and beards. Which statement correctly explains this difference?

  • A Boys and girls both grow facial hair, but girls remove it more frequently.
  • B Facial hair growth in boys is caused by the growth of the voice box during adolescence.
  • C Facial hair in boys is a secondary sexual characteristic, while underarm and pubic hair growth is common to both sexes.
  • D Underarm hair is a primary sexual characteristic and facial hair is unrelated to adolescence.

C. Facial hair in boys is a secondary sexual characteristic, while underarm and pubic hair growth is common to both sexes.

What each wrong option reveals

  • A Indicates a social misconception about hair removal rather than a biological distinction; the student has not engaged with the chapter's classification of secondary sexual characteristics.
  • B Confuses two separate mechanisms — larynx growth (voice change) and hormonal influence on hair distribution — conflating two distinct changes from the chapter.
  • D Confuses primary and secondary sexual characteristics; the student has not applied the chapter's definition, which reserves 'primary' for structures directly involved in reproduction.
Chapter 6 · 11 periods of 40 min

Also saved as 7 periods or 9 periods.

  • 2Mapping the Body: Secondary Sexual Characteristics Chart
    Observe and describe physical changes of adolescence
  • 3Inside the Change: Reproductive Maturation and the Menstrual Cycle
    Classify and explain reproductive maturation changes
  • 4Puberty Defined: Connecting Visible and Internal Change
    Classify and explain reproductive maturation changes
  • 5Emotion–Behaviour Links: Completing Table 6.2
    Analyse emotional and behavioural change as linked phenomena
  • 6Wellness Audit: Nutrition, Hygiene, and Activity During Adolescence
    Analyse emotional and behavioural change as linked phenomena
  • 7Responsible Choices: Social Media Dos and Don'ts Poster
    Analyse emotional and behavioural change as linked phenomena
  • 8The 'Why' Behind the Changes: Introducing Hormones
    Explain hormones as the biological cause underlying all adolescent changes
  • 9Substance Harm and Hormonal Disruption: Saying No with Reasons
    Explain hormones as the biological cause underlying all adolescent changes
  • 10Government Schemes as Evidence: Connecting Biology to Public Health Policy
    Explain hormones as the biological cause underlying all adolescent changes
  • 11Adolescence on the Ground: Tracing Biology Through a Community Health Fair
    Explain hormones as the biological cause underlying all adolescent changes
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