CBSE Class 3 · Science
Food We Eat
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 “Food We Eat” 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
1Favourite food is still food: it does a body job
Food is what the body can use for energy or building. A favourite dish still has to pass that job. A plastic toy snack fails.
Taste is not the only test. It is allowed; it is not enough.
Figure. A favourite dish is still food only if the body can use it for energy or building. A plastic toy snack fails that job even if it looks tasty.
How it works
- Name the dishThis plate.
- Ask if the body can use itEnergy or building.
- If it is only plastic, it is not foodA toy fails.
2Home dishes can be sorted by what they are made from
Dal is from pulses. Roti is from grain. Curd is from milk. Sort by source-stuff, not by which bowl is prettier.
A mixed plate can have more than one source. Sort the parts.
Figure. Home dishes sort by what they are made from: roti from grain, dal from pulses, curd from milk. A mixed plate is sorted part by part.
How it works
- Pick one part of the plateThe dal, or the roti.
- Name what it is made fromPulse, grain, milk, vegetable…
- Put it in that source-sortParts, not the whole thali as one blob.
3A plant source and an animal source are two tests
Grain, fruit, and leaf come from plants. Milk, egg, and meat come from animals. Run the source test on the part you named.
A dish can mix both. That is two ticks, not a fight.
Figure. Plant and animal are two source tests, not a fight. Grain, fruit and leaf pass the plant test; milk, egg and meat pass the animal test. One thali can tick both.
How it works
- Name the partThis piece.
- Ask plant or animal sourceOne test.
- Allow both on one plateA mixed meal.
4Food is material plus energy, not only taste
The body uses food as stuff (material) and as a go (energy). Taste helps you eat it. Taste alone does not name the job.
A bitter green can still be food. A sweet wrapper is not.
Figure. Food is material plus energy. Taste helps you eat it; taste is not the job. A bitter green can still be food. A sweet wrapper is not.
How it works
- Ask energy or buildingThe body job.
- Allow taste as extraNot the definition.
- Reject wrappers and airNo body job.
5A meal missing a kind of food is a thinner job
A plate of only sweets is a thinner set of jobs than a plate that also has a grain and a pulse. Thinner is the careful word — not “poison”.
One meal is not a lifetime. Still, name what is missing today.
Figure. Jobs on the plate, not poison. A sweets-only meal covers one kind of job; a grain-and-pulse plate covers three. Thinner names what is missing today.
How it works
- List kinds on the plateGrain, pulse, vegetable, milk…
- See a missing kindIf it is missing, say so.
- Call that thinner for this mealNot a scare word.
6Draw and name is a record, not the science yet
A drawing of lunch is a record of what was there. The science starts when you sort by source or job.
A pretty drawing without a sort is homework art, not this chapter’s claim.
Figure. A drawing of lunch is a record. The science starts when a source or job label is added. A pretty drawing without that sort is not this chapter's claim.
How it works
- Draw or list the dishThe record.
- Add a source or job labelPlant grain; energy…
- That label is the science stepThe picture alone is not.
7Keep the claim at the dish you looked at
“This lunch had roti and dal” is a claim. “Everyone in the country eats this” is too big.
One dish is enough.
Figure. Keep the claim at the dish you looked at. This lunch had roti and dal is allowed. Everyone in the country eats this is too big.
How it works
- Name the dishToday’s plate.
- State the source-sortGrain and pulse.
- Stop at that plateNo country-wide claim.
8The next chapter will add healthy habits
Food kinds live here. Sleep, hands, and play wait in staying healthy. Do not steal those tests yet.
A food page that only scolds “wash hands” is the next chapter.
Figure. Food kinds live on this page. Sleep, washed hands and play wait in the next chapter. A food page that only scolds wash hands has jumped ahead.
How it works
- Finish source and jobWhat the food is.
- Flag that habits come nextHands, sleep, play.
- Keep this page on the plateThe dish, not the soap.
A plastic toy ladoo is
- Not food: no body job
- Food because it looks sweet
- A plant source
Food must do a body job.
Notes
- Mapped to the official NCERT chapter “Food We Eat”. 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 “Food We Eat”. The wording is ExamMaster’s teaching, not a textbook recap.
- Favourite food is still food: it does a body job
- Food is what the body can use for energy or building.
- Home dishes can be sorted by what they are made from
- Dal is from pulses. Roti is from grain. Curd is from milk. Sort by source-stuff, not by which bowl is prettier.
- A plant source and an animal source are two tests
- Grain, fruit, and leaf come from plants. Milk, egg, and meat come from animals. Run the source test on the part you named.
- Food is material plus energy, not only taste
- The body uses food as stuff (material) and as a go (energy).
- A meal missing a kind of food is a thinner job
- A plate of only sweets is a thinner set of jobs than a plate that also has a grain and a pulse.
- Draw and name is a record, not the science yet
- A drawing of lunch is a record of what was there.
Practise Food We Eat
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