TM
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 12 · Period 1 of 14 · 40 min

Shadow Watch: Why Does the Sun Seem to Move?

Observe and question apparent sky phenomena · Discovery approach

This opening unit sets the chapter's inquiry in motion through Rashmika's everyday observation, so resist resolving the puzzle now — the tension is the pedagogical engine. Watch for the very common assumption that the Sun literally travels across the sky; note which students hold it strongly, as it will need revisiting in the next unit. A useful checkpoint: every student should leave with a written prediction they can test against what they learn.

0-8Teacher introduces Rashmika's coconut-tree shadow question and students make an initial prediction in writing.
8-22Students step outside or observe windows to note current shadow direction and length, sketching the pattern and comparing with morning versus midday expectations.
22-32Groups share their explanations — Sun moving, Earth moving, or something else — and list the key evidence they would need to decide.
32-40Teacher collects the range of ideas on the board without resolving them, establishing them as the chapter's driving questions.
Assessment

Competency (C-2.5). Observing and identifying celestial objects and explaining their role in navigation, calendars, and other phenomena including phases of the moon and eclipses.

Learning outcome. Students can describe the apparent East-to-West motion of the Sun and stars as a consequence of Earth's West-to-East rotation, supported by observational evidence from shadow patterns and the globe-torch model.

Rashmika notices that the Sun appears to move from East to West across the sky each day. What is the actual cause of this apparent motion?

  • A The Earth revolves around the Sun from East to West.
  • B The Earth rotates from East to West, making the Sun appear to rise in the East.
  • C The Earth rotates from West to East on its own axis.
  • D The Sun moves from East to West around the Earth.

C. The Earth rotates from West to East on its own axis.

What each wrong option reveals

  • A Student confuses revolution (Earth orbiting the Sun) with the cause of daily apparent Sun motion; this is a within-chapter concept confusion between the two types of Earth motion.
  • B Student correctly identifies Earth's rotation as the cause but reverses the direction — East-to-West rotation — which would produce sunrise in the West, not the East.
  • D Student holds the persistent misconception that the Sun physically travels around the Earth — the geocentric view that the chapter's merry-go-round analogy is designed to dislodge.
Chapter 12 · 14 periods of 40 min

Also saved as 8 periods or 10 periods or 12 periods.

  • 2Merry-Go-Round Logic: Feeling Rotation from the Inside
    Observe and question apparent sky phenomena
  • 3Globe and Torch: Mapping Day, Night, and Rotation
    Observe and question apparent sky phenomena
  • 4Two Motions, One Earth: Rotation vs. Revolution
    Classify and describe Earth's motions and their observable effects
  • 5Star Trails and the Pole Star: Evidence in the Sky
    Classify and describe Earth's motions and their observable effects
  • 6Revolution and the Changing Night Sky
    Classify and describe Earth's motions and their observable effects
  • 7Tilt, Angle, and Intensity: Why Seasons Happen
    Explain the causal mechanism of seasons
  • 8Solstices, Equinoxes, and the Hemisphere Flip
    Explain the causal mechanism of seasons
  • 9Polar Day and Night: Extreme Consequences of Tilt
    Explain the causal mechanism of seasons
  • 10Apparent Size: How Your Thumb Can Block a Head
    Explain eclipse formation through relative positions and apparent size
  • 11Solar Eclipse: Shadow Geometry on Earth
    Explain eclipse formation through relative positions and apparent size
  • 12Lunar Eclipse: Earth's Shadow Turns the Moon Red
    Explain eclipse formation through relative positions and apparent size
  • 13Positions Predict Phenomena: Linking Alignment to Events
    Apply positional and motion knowledge to explain relative-position phenomena and their significance
  • 14The Lighthouse Keeper's Log: Reading a Year of Sky Records
    Apply positional and motion knowledge to explain relative-position phenomena and their significance

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