CBSE Class 3 · Science
Living in Harmony
Official NCERT chapter from Our Wondrous World (book code ceev1). ExamMaster notes are original teaching at CBSE Class 3 depth.
This lesson follows the official chapter “Living in Harmony” in Our Wondrous World. The words below are ExamMaster’s teaching, not a paste from the book. Use the NCERT chapter for the classroom sequence; use these notes to hold the idea without copying exercises or figures.
- CBSE Class 3
- Easy level
- 8 concepts
2Care is a job: water, food, space, not only a pet name
Care means the jobs the living thing needs: water for the pot plant, food and space for the calf. A cute name is not care.
A neglected cage with a lovely name fails.
Figure. Care is three jobs you can point at: water, food, and space. A pet name is not on this row. If any job is missing, care has not happened.
How it works
- Name the living thingThis plant or animal.
- List one needWater, food, or space.
- Do that jobThe name can wait.
3Harm means a job that hurts the living thing
Hitting, starving, or trapping without care is harm. Harm is a job with a bad effect you can name, not a rude word alone.
A scolding that still includes food and water is not this harm test.
Figure. Harm is a job with a bad effect you can name: hitting, starving, or trapping without care. It is not only a rude word. The left box keeps the living thing; the right box hurts it.
How it works
- Name the actionWhat was done.
- Name the effect on the living thingHurt, hungry, no space.
- If the effect hurts, call it harmStop that job.
5A cage without food fails the care test
Food, water, and space are the care jobs. A locked cage that misses them fails, even if it looks tidy.
Tidiness is not food.
Figure. A tidy cage is not care. Food, water, and space are the jobs. If food is missing, the care test fails even when the lock looks neat.
How it works
- Check foodIs there some?
- Check waterCan it drink?
- Check space to moveIf any fail, care failed.
6Keep the claim at the animal you can point to
“This calf in our yard got water today” is a claim. “All animals are happy” is too big.
One pointed case is enough.
Figure. Keep the claim at the animal you can point to. ‘This calf in our yard got water today’ is a claim. ‘All animals are happy’ is a slogan, not a test.
How it works
- PointThis one.
- State the care job you did or sawWater, food, space.
- Stop thereNo planet-wide slogan.
7Waste and noise can break the sharing
Loud nights or dumped waste can make the shared place unusable for the bird or the plant. That is a broken share.
A clean, quieter place is a care job for the house-sharer too.
Figure. Waste dumped in the yard or loud nights can make the shared place unusable for the bird or the plant. That is a broken share, not a scolding word.
How it works
- See waste or noiseIn the shared place.
- Ask if the living thing can still do its jobsRest, eat, grow.
- If not, the share is brokenClean or quiet the place.
8Harmony is a test of jobs, not a slogan
Harmony here means care jobs are done and harm jobs are not. A poster that says “harmony” without water in the pot fails the test.
The word is not the evidence.
Figure. Harmony here is a test of jobs: water done, food done, no harm. A poster that only says HARMONY, with the pot dry, fails the same test.
How it works
- List care jobsWater, food, space.
- Check they happenedOn the living thing you can point to.
- Call that harmony only thenA slogan is not a test.
A tidy cage with no food
- Fails the care test
- Passes because it is tidy
- Is only a slogan
Food, water, and space are the care jobs.
Notes
- Mapped to the official NCERT chapter “Living in Harmony”. Original teaching only — no textbook sentences.
- Science here is Physics, Chemistry and Biology ideas at this class, never a language or social-science chapter.
Recap
Hold these pegs from the official chapter “Living in Harmony”. The wording is ExamMaster’s teaching, not a textbook recap.
- Some animals, birds, or plants share a house with us
- A house-sharer lives in the same home: a pot on the balcony, a cow in the yard, a sparrow in the eaves.
- Care is a job: water, food, space, not only a pet name
- Care means the jobs the living thing needs: water for the pot plant, food and space for the calf.
- Harm means a job that hurts the living thing
- Hitting, starving, or trapping without care is harm.
- Sort house-sharers from outdoor neighbours
- A balcony tulsi shares the house. A crow on a distant tower is an outdoor neighbour. Sort by whether they stay in the home place.
- A cage without food fails the care test
- Food, water, and space are the care jobs. A locked cage that misses them fails, even if it looks tidy.
- Keep the claim at the animal you can point to
- “This calf in our yard got water today” is a claim.
Practise Living in Harmony
Reading is free and needs no account. Practice, mocks and progress live in the app.
- A 4-question practice set that ends the chapter
- 1 quick check with worked explanations
- Timed mocks scored with the real marking scheme
- Readiness tracked per topic, kept on your device