Filling and Lifting – Class 3 Maths Chapter 11 Notes & NCERT PDF

Class 3MathematicsChapter 11NCERT book: Maths Mela - Class 3

Notes and a simple summary of Chapter 11 of the NCERT Class 3 Mathematics book, with the official chapter PDF, flashcards, an MCQ quiz and an AI tutor for your doubts.

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Chapter 11: Filling and Lifting

Introduction

Filling and Lifting introduces two new kinds of measuring: how much a container holds (capacity) and how heavy something is (weight). It begins with a juice-shop challenge: drink 6 big glasses of juice and get your money back. Chintu says he could drink 6 small glasses, but not 6 big ones. The teacher's note explains that a bigger glass means you can drink fewer glasses.

What's in this Chapter

Whose glass holds more?: Nita, Monu and Ritu drink milk from different glasses. Ritu's elder sister pours each glass into three same-sized glasses to compare fairly. Children fill blanks with "more" or "less".

Guess and pour: bring a small bowl, a glass and a bottle from home, guess how many bowls fill the glass and how many glasses fill the bottle, then pour water to check.

Ladles, bowls, glasses and jugs: how many ladles fill a bowl, how many glasses a jug fills, and which utensil is best for sharing lemonade. The teacher's note says small containers can fill a big one, a big one can fill many small ones, and the quantity stays the same.

1 litre: the milkman uses a measuring cup of 1 litre. Nita uses a 1 litre bottle to find that the jug holds exactly 1 litre, and checks whether a glass or bowl holds more or less than 1 litre.

Half litre and quarter litre: children decide whether a mug holds a litre or half a litre, and whether a glass holds a quarter litre. The teacher's note: 4 quarter-litre glasses make 1 litre and 2 half-litre mugs make 1 litre.

Do you know?: making a 1 litre single-use plastic bottle needs about 5 litres of water, so a reusable bottle wastes less water.

Heavy or light?: Chintu holds 3 textbooks in one hand and a pencil box in the other for 30 seconds. The hand with the books goes lower because heavier things go down.

Pan-balance: weighing a pencil and a ping-pong ball with coins or erasers, then using a sand-filled matchbox as a weight for a pencil box, a spoon and 4 marbles.

Weight hunt: comparing school bags and moving books to make two bags about the same weight.

1 kilogram: using a 1 kg salt packet to guess whether things are more or less than 1 kg, and finding things of half and quarter kilogram.

Tricky balls: find the one heavier ball among 3 similar balls using a pan-balance only once, and order 3 balls of different weights.

Key Ideas

Capacity is how much a container can hold; weight is how heavy something is.

To compare containers fairly, pour into same-sized containers.

Standard units: litre for liquids, kilogram for weight.

2 half litres = 1 litre; 4 quarter litres = 1 litre. The same halves and quarters work for kilograms.

A pan-balance tips down on the heavier side.

Activities from the Book

Guess-and-pour with bowls, glasses and bottles.

Find vessels at home that hold exactly 1 litre.

Weigh objects with coins, erasers and sand-filled matchboxes.

Solve the tricky-balls puzzles.

Words to Learn

Capacity (धारिता) - how much a container can hold

Litre (लीटर) - a unit to measure liquids

Weight (भार / वज़न) - how heavy something is

Kilogram (किलोग्राम) - a unit to measure weight

Heavy / light (भारी / हल्का)

Pan-balance (तराज़ू) - a tool with two pans to compare weights

Measuring cup (मापने का बर्तन)

Ladle (कलछी) - a big spoon for serving

Vessel (बर्तन) - a container

Tips for Parents & Teachers

In the kitchen, let your child find how many glasses of water fill a 1 litre bottle.

Look for labels showing 1 kg, 500 g or 250 g on packets; talk about half and quarter kilogram.

Make a coat-hanger balance with two cups to compare small objects.

Common Mistakes

Thinking a taller glass always holds more; a short, wide glass may hold more.

Believing a bigger object is always heavier (a balloon is big but light).

Forgetting to use same-sized containers when comparing amounts.

💡 Key Learning Points

✓Capacity tells how much a container can hold; it can be compared by pouring into same-sized containers.
✓Small containers can be used to fill a big one, and the quantity stays the same.
✓The litre is a standard unit for liquids; 2 half litres or 4 quarter litres make 1 litre.
✓Heavier objects go down on a pan-balance; weight can be measured with coins, erasers or matchboxes of sand.
✓The kilogram is a standard unit of weight; objects can be half, quarter or more than 1 kg.

👨‍🏫 Teaching Tips

→Start with the juice-shop poster and ask whether children would take the challenge, as the book does.
→Do the guess-and-pour activity with real water so children test their guesses.
→Bring measuring vessels of 1 litre, half litre and quarter litre, as the teacher's note advises.
→Use a toy pan-balance with coins or erasers as weights.
→Invite a vegetable vendor or bring a pan-balance so children see real weighing.
→Discuss the plastic-bottle fact and encourage children to carry reusable bottles.
→Let children explain their reasoning in the tricky-balls puzzle before revealing a method.

📋 Assessment Questions

Can the child explain how Ritu's sister found out who drank the most milk?
Can the child guess and then check how many small vessels fill a bigger one?
Can the child say whether a glass, bowl or bucket holds more or less than 1 litre?
Can the child use a pan-balance to say which object is heavier?
Can the child sort objects as more than or less than 1 kilogram?

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