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Key Point: Balanced meal (idea) = foods from different groups (cereals + pulses/dairy + vegetables/fruits + little fat)
What is food?
Food is anything we eat or drink that gives us energy and helps our body grow and stay healthy. Food comes from plants and animals. We get grains, fruits, vegetables, milk and eggs from farms and gardens. Food keeps us active, helps our body repair itself and gives warmth.
Why food is important
Where does our food come from?
How plants make food (simple idea)
Leaves use sunlight, water and air to make food for the plant. This is why plants need sun and water.
Healthy eating
A balanced meal includes food from different groups: cereals for energy, pulses and milk for protein, vegetables and fruits for vitamins, and a little fat for taste. Washing hands and food, and cooking properly keep food safe.
Good habits about food
Key Point: Simple photosynthesis (how plants make food): sunlight + water + carbon dioxide → food (glucose) + oxygen
What are Sources of Food?
Foods come from many places. Most food comes from plants and animals. Some foods come from water (sea, rivers), forests or are made by people in kitchens and factories.
Main sources:
How food moves in nature (a simple food chain): Plants make food using sunlight. Animals eat plants. Bigger animals eat smaller animals. Example: grass → grasshopper → frog → snake.
Why it matters: Knowing where food comes from helps us care for farms, animals, forests and water so we always have enough good food.
Key Point: Photosynthesis (simple): Sunlight + Water + Carbon dioxide → Plant food (glucose) + Oxygen
What does ‘Food from Plants’ mean?
Plants are living things that make many of the foods we eat. Food from plants includes grains, fruits, vegetables, pulses, nuts, oilseeds and sugar. Plants give us carbohydrates (energy), vitamins, minerals, proteins (from pulses), fats (from oilseeds) and fiber.
How do plants make food?
Plants make their own food by using sunlight, water and carbon dioxide in a process called photosynthesis. In simple words: plants use sunlight to turn water and air into food for themselves and release oxygen for us.
Parts of plants we eat (with examples):
From farm to plate
Plants are grown on farms or in gardens. Steps: sowing seeds → growing (water & sun) → harvesting → cleaning/processing (e.g., milling wheat) → selling at market → cooking and eating.
Why plant foods are important
They give energy, help our growth, keep us healthy and protect us from sickness. Eating a mix of plant foods (grains, vegetables, fruits, pulses, nuts) gives balanced nutrition.
Simple classroom activities: plant a bean seed in a transparent cup to watch germination, make a chart of plant parts we eat, or sort kitchen foods into "from plants" and "from animals".
Key Point: Total milk in a week = (milk per day in litres) × 7. Example: 8 L/day × 7 = 56 L/week.
What are foods from animals?
Foods from animals are the foods we get directly from animals or from products made by animals. These include milk and milk products, eggs, meat, fish and honey. Some animal products are processed (curd, butter, cheese, ghee) but still come from animals.
Sources and examples
Why are foods from animals important?
Animal foods are rich in nutrients such as proteins, calcium (especially milk), some vitamins (like B12) and fats. These help build and repair our body, make strong bones and give energy.
How do animals provide food?
Farmers look after animals by giving them clean water, good feed, shelter and veterinary care. Healthy animals produce more milk, eggs or honey. Food from animals often needs to be cleaned, cooked or processed (for example, milk is boiled or pasteurised) before eating.
Safety and hygiene
Always wash hands before eating. Milk should be boiled or pasteurised. Eggs and meat must be cooked well. Store animal foods in a cool place or refrigerator if needed to prevent spoiling.
Balanced diet
We should eat a mix of foods from plants and animals. While animal foods give important nutrients, fruits, vegetables, grains and pulses give vitamins, fibres and carbohydrates. A balanced plate often has some foods from both sources.
Quick tips for children
Key Point: Parts formula: Roots + Stems + Leaves + Flowers + Fruits + Seeds = Parts of plants we eat
Plants have different parts and many of the foods we eat come from these parts. The main parts we eat are roots, stems, leaves, flowers, fruits and seeds. Each part looks different and grows in a different place on the plant.
Roots: Roots grow underground. They take water and minerals from the soil and sometimes become thick and juicy. Examples: carrots, radishes, beetroots.
Stems: Stems hold the plant up and carry water and food between roots and leaves. Some stems are eaten. Examples: sugarcane, asparagus, potato (the potato eaten is an underground stem called a tuber).
Leaves: Leaves make food for the plant using sunlight. Many leaves are eaten as vegetables. Examples: spinach, lettuce, coriander.
Flowers: Flowers help plants make fruits and seeds. Some flowers are eaten as vegetables. Examples: cauliflower, broccoli, lotus stem & flower parts used in cooking.
Fruits: Fruits contain seeds and usually develop from the flower. Many sweet and sour foods are fruits. Examples: mango, apple, tomato (botanically a fruit), banana.
Seeds: Seeds grow into new plants. We eat many seeds and products made from them. Examples: peas, beans, rice, wheat, nuts.
Knowing which part of a plant a food comes from helps us understand where food comes from and why different foods are good for our body. For example, leafy vegetables are rich in vitamins, roots often give energy and minerals, and seeds and grains provide carbohydrates and proteins.
Key Point: Area of a rectangular field = length × breadth (for example, if length = 10 m and breadth = 5 m, area = 10 × 5 = 50 m²).
Farming is the work people do to grow food and raise animals. Farmers are the people who grow crops (like rice, wheat, vegetables and fruits) and take care of animals (like cows, goats and chickens). The food we eat — rice, chapati, dal, vegetables, milk, eggs and fruits — comes from farms.
How farmers grow food (simple steps):
Types of farming and examples:
Seasons in India (simple): Kharif crops (grown in monsoon, e.g., rice, maize) and Rabi crops (grown in winter, e.g., wheat, mustard). Farmers plan when to sow seeds depending on the season and weather.
Why farmers are important: They give us food, clothes (like cotton), and raw materials. We should respect farmers and not waste food.
Simple good farming practices: crop rotation (plant different crops each season), using compost or organic manure, saving water (drip irrigation) and taking care of soil so farms stay healthy for years.
Key Point: Simple photosynthesis (short form for students): Sunlight + Water + Carbon dioxide -> Plant food (sugar) + Oxygen
What this topic is about
This topic tells the story of how the food on our plate starts from farms, gardens, fields, rivers and seas and then reaches our homes. It explains who grows or catches food, what happens to it after harvest, and how it is sold and cooked.
Where our food comes from
Steps from farm to plate (Farm to Fork)
Producers, consumers and decomposers (simple food chain)
Plants that make their own food using sunlight are called producers. Animals that eat plants or other animals are consumers. Tiny organisms like fungi and bacteria that break down dead plants and animals are decomposers.
Simple food chain example
Grass → Cow → Human. A bird might eat insects on the grass, so Grass → Insect → Bird.
How food is kept fresh and reaches far places
Perishable food (milk, fruits, vegetables, fish) is often kept cool in refrigerators or cold vans. Dry goods (wheat, rice) are stored in bags and warehouses. This helps food travel from farms to cities without spoiling.
Why knowing this is important
When children understand how food reaches us, they learn to respect farmers and food, avoid wasting food, and choose healthy, seasonal items.
Key Point: 1000 grams (g) = 1 kilogram (kg) — useful when measuring grains or flour.
What is food processing and preparation? Food processing means changing raw foods (like wheat, rice, fruits, vegetables, milk) into forms that are safer, tastier or last longer. Food preparation is the set of simple activities we do at home or school to get food ready to eat — washing, peeling, cutting, cooking and serving.
Why do we process and prepare food?
Common steps in processing and preparation
Effect on nutrition and safety
Cooking can make some foods easier to digest and safer by killing germs. But overcooking can reduce some vitamins. Preservation methods can keep food edible longer; some methods add salt or sugar (for example, pickles or jam) so we should eat those in small amounts.
Good habits when preparing food
Key Point: Salt concentration (%) = (mass of salt ÷ total mass of solution) × 100
What is storage and preservation?
Storage means keeping food safely until we need to eat it. Preservation means using methods to stop food from getting spoiled so it can be kept for a longer time.
Why do we preserve food?
Common methods of storage and preservation (simple explanation)
Simple tips to store food at home
How preservation works (simple idea)
Germs that spoil food need moisture, warmth and time. Preservation methods remove or reduce one or more of these: drying removes water, cold lowers temperature, salt or sugar make water unavailable to germs, and vinegar makes bad conditions for germs.
For Class 3 students: preservation keeps food safe and tasty for later. Always ask an adult if unsure how to store something!
Key Point: Hand-washing rule: Soap + Water + 20 seconds = Fewer germs on hands
What is cleanliness and food safety?
Cleanliness means keeping our body, kitchen, plates and food clean. Food safety means eating food that is fresh and prepared in a clean way so it does not make us sick. Together they help us stay healthy and strong.
Why it is important
If food or the place where food is prepared is dirty, tiny living things called germs (bacteria, viruses) can get into the food. Eating such food can cause stomach ache, vomiting or diarrhoea. Cleanliness and safe handling stop germs from entering food.
How to keep food clean and safe (simple steps)
What happens if we ignore cleanliness?
Dirty food or hands can cause illnesses. Children may miss school and need doctor visits. Simple cleaning habits prevent most of these problems.
Key Point: Balanced plate rule = 50% fruits & vegetables + 25% cereals (rice/roti) + 25% proteins (dal/egg/paneer).
What is a balanced diet?
A balanced diet gives our body all the foods and nutrients (carbohydrates, proteins, fats, vitamins, minerals and water) in the right amounts so we can grow, play, learn and stay healthy.
Why is it important?
Main food groups and their jobs
How to make a balanced meal (easy plate rule)
Imagine your plate is split into three parts: half the plate should be vegetables and fruits, one quarter cereals (rice/roti), and one quarter proteins (dal/egg/paneer). Add a small glass of milk or curd and a little healthy fat (like a teaspoon of oil) if needed.
Healthy eating tips for Class 3 students
Simple food safety note: Cook food properly, store leftovers in a clean container, and throw away food that smells bad.
Key Point: Food wasted = Food prepared − Food eaten
What is food waste? Food waste means food that is thrown away or not eaten. This can happen when too much food is cooked, food goes bad, or we drop food on the floor.
Why is food waste a problem? Wasting food is bad because it wastes the work and resources that went into growing and making the food — water, seeds, land, time and money. When food rots in the dustbin it can also make the air dirty and attract pests.
How does food waste happen? Common reasons: cooking too much, taking more on the plate than we can finish, forgetting food in the fridge until it spoils, and throwing away leftovers instead of using them again.
How can we conserve food? Conservation means saving food so it is not wasted. Simple ways for children and families:
What can you do at school and home? At school: take only what you can eat and ask for help if you don’t like something. At home: help parents plan meals, check dates on food packages, and learn to pack lunch so nothing is thrown away.
By saving food, we save money and help the earth. Small habits every day make a big difference.
Key Point: Total fruits = Number of trees × Average fruits per tree (useful to estimate harvest)
What are jobs related to food?
Jobs related to food are the different kinds of work people do to grow, make, move, sell and cook the food we eat. Many people are involved before food reaches our plate. Each job is important because they help produce safe and tasty food for everyone.
Main groups of jobs:
How these jobs work together: A farmer grows wheat → a miller grinds it into flour → a baker makes bread → a delivery person brings bread to the shop → a shopkeeper sells it → a cook uses it to prepare a sandwich. This shows how many jobs are linked in a chain.
Why these jobs are important: They make sure we have enough food, that food is safe and tasty, and that people can earn a living. If one job is missing, the food chain can be affected— for example, if transport stops, food cannot reach shops.