Hello, young mathematician! You already compare things every day. You notice who is taller, which pencil is shorter, which school bag feels heavier, and which bottle can hold more. In this guide, you will learn how to make these comparisons carefully and explain what you see.
For a caregiver: Let the child touch, line up, lift, and describe safe objects before asking for written answers. The words and reasons matter more than speed.
This original PrincipalSaab guide follows Chapter 7, Lina’s Family (Measurement), from the current NCERT Joyful Mathematics book for Class 1. The official chapter sets the learning scope. Every explanation, example, activity, and practice prompt below is newly written.
Words to Know
| Word | Simple meaning | Example |
|---|---|---|
| Taller | Having more height | The cupboard is taller than the chair. |
| Longer | Reaching farther from one end to the other | The blue paper strip is longer. |
| Thicker | Having more width around or across | A marker is thicker than a pencil. |
| Heavier | Needing more effort to lift | A full school bag may be heavier than an empty lunch bag. |
| Capacity | How much a container can hold | A large jug can hold more than a small cup. |
| Estimate | A careful guess made before checking | I estimate that the desk is six handspans long. |
Your Learning Plan
- Look at the two objects or pictures carefully.
- Choose the comparison word that fits.
- Line up the starting points when you compare length or height.
- Use the same small unit when you count.
- Say how you checked your answer.
Tall, Short, Near, and Far
Height tells us how tall something is from bottom to top. To compare the heights of two people or objects fairly, imagine that both are standing on the same floor line. If one picture begins higher than the other, the comparison can trick your eyes.
Use taller and shorter when you compare two heights. Use tallest and shortest when you compare three or more. These words describe a comparison; they do not praise or blame anyone.
Near means close to a chosen place. Far means a greater distance away. Always ask, “Near to what?” A window can be near a desk but far from the door.
Three paper figures stand on the same line. Arun is 12 blocks tall, Bela is 10 blocks tall, and Chetan is 8 blocks tall. Compare 12, 10, and 8.
Answer: Arun is tallest, Bela is in the middle, and Chetan is shortest.
Long, Short, Thick, and Thin
Length tells us how far an object reaches from one end to the other. Put the objects side by side and line up one end. The object that reaches farther is longer. The one that stops earlier is shorter.
Thickness is a different idea. A thick marker can be short. A thin ribbon can be long. Look at the exact feature named in the question instead of guessing from the overall size.
A yellow strip covers 14 equal paper squares. A green strip covers 9 equal paper squares. Both begin at the same line.
Answer: The yellow strip is longer because 14 is more than 9. The green strip is shorter.
You can practise comparison words in What is Long? What is Round? — Class 1 Mathematics.
Handspans, Fingers, and Footspans
Before children use rulers, they can measure with body-based units. A handspan is the distance from the tip of the thumb to the tip of the little finger when the hand is spread. A finger width is useful for a small object. A footspan can help with a longer floor distance.
Use the same unit again and again without leaving gaps or making overlaps. Begin at one end and stop at the other. Say both the number and the unit, such as “five handspans,” not only “five.”
Different people may get different counts because their hands and feet have different sizes. That is not always a mistake. It shows why a shared standard unit is useful later.
Mira wants to compare the width of an eraser, the length of a table, and the floor distance from her chair to the door.
Answer: Use finger widths for the eraser, handspans for the table, and footspans for the floor distance.
Heavy and Light
Weight comparison tells us which object is heavier and which is lighter. For two safe objects, you may gently lift one in each hand. If the objects are too large, fragile, hot, sharp, or unknown, ask an adult and do not lift them.
Size alone does not always tell weight. A large empty box may be lighter than a small bag filled with books. The fairest comparison uses the feeling of lifting or a balance, not only eyesight.
One closed pouch contains 6 identical wooden blocks. Another pouch contains 3 identical blocks. The pouches are otherwise the same.
Answer: The pouch with 6 blocks is heavier. The pouch with 3 blocks is lighter.
Holds More and Holds Less
A container’s capacity is how much it can hold. To compare two containers, use the same cup as a small unit. Count how many full cups fit in each container. The container needing more of the same cups holds more.
A container can look tall and narrow or short and wide. Looking alone may not give the right answer. Counting with the same cup gives a fair comparison.
The same small cup fills Jug A with 3 cups and Jug B with 5 cups. Every cup is filled to the same level.
Answer: Jug B holds more because 5 cups are more than 3 cups. Jug A holds less.
Guess, Check, and Explain
A good measurement routine has three parts. First, make a careful guess. Next, check with a fair method. Last, explain what happened. You might say, “I guessed the notebook was four handspans long. It was really three handspans, so my guess was one handspan too many.”
Use comparison words in a full sentence. “Blue” is not a complete answer to “Which ribbon is longer?” Say, “The blue ribbon is longer than the red ribbon.” A clear sentence helps another person understand your thinking.
The counting skills in How Many? — Class 1 Mathematics can help you count repeated handspans, finger widths, cups, and steps carefully.
Practice Time
Try each original prompt first. Then open the answer and explain why it is fair.
Practice 1. Two pencils begin at the same line. One reaches 11 paper squares and the other reaches 7. Which is longer?
Answer: The pencil reaching 11 squares is longer because 11 is more than 7.
Practice 2. A cupboard and a stool stand on the same floor. The cupboard reaches higher. Which is taller?
Answer: The cupboard is taller; the stool is shorter.
Practice 3. Which unit is more useful for the width of a button: finger widths or footspans?
Answer: Finger widths are more useful because a button is small.
Practice 4. Ravi measures a desk as 5 handspans. Ana measures it as 6 handspans. Must one child be wrong?
Answer: No. Their handspans may be different sizes, or one method may have gaps. They should check their starting point and placement.
Practice 5. One box has 8 identical blocks and another has 4. Which box is likely heavier if the boxes are the same?
Answer: The box with 8 identical blocks is likely heavier.
Practice 6. The same cup fills a red bottle with 4 cups and a blue bottle with 6 cups. Which holds more?
Answer: The blue bottle holds more because 6 cups are more than 4 cups.
Practice 7. A scarf is long and thin. Which word tells its length?
Answer: Long tells its length. Thin tells its thickness.
Practice 8. You guessed a book was 6 handspans long. It measured 4 handspans. Was the guess too large or too small?
Answer: The guess was too large by 2 handspans because 6 − 4 = 2.
Kaizen step: Make one fair comparison today, say the unit, and explain how you checked it.
Continue Learning
- Vegetable Farm — Class 1 Mathematics Notes & Practice for calm addition and subtraction practice.
- Browse the Class 1 learning hub for more current chapter guides.
- Next in Joyful Mathematics: continue with the next official chapter after this one.