Table of contents  
Introduction  
Let's Understand With a Story  
Measurement of Length  "How long?"  
Different tools for Measuring Lengths  
Measuring Distances  "How far?"  
Let's Practice 
Imagine a world full of measuring tools and colorful adventures! In this chapter, we'll learn how to measure using our hands, feet, and special tools like metre ropes. Get ready to compare lengths, guess distances, and have a blast as we explore the exciting world of measurement together!
Have you ever wondered how people measured things long ago? They didn't have rulers like we do now. Instead, they used parts of their bodies! Here are some of the parts they used:
But here's the thing: everyone's hand span and cubit are different like we saw in the story given above.
So when they measure something, they don't always get the same answer. That's why mathematicians decided to create standard units of length.Foot Scale
So, even though people used to measure with their hands and arms, now we use meters and centimeters to measure things accurately!
For measuring lengths, we use:
A cloth merchant measures cloth by iron rod called the meter rod.
Metre Rod
15 cm Ruler
Here, the distance from the floor to a door knob is about 1 meter and the height of the plant is also about 1 meter.
There are certain things such as the following that are more than a meter long.
There are certain things like those shown below that are less than a meter long.
We use meter to measure long length and centimeter to measure short length.
Your finger is about 1 centimeter wide.
This will help you to estimate length in centimeter. A 15 cm or 30 cm ruler is used to measure lengths in centimeter.
To measure the length of an object, say, a sharpener, line up one of the sharpener end at the 0 mark of the ruler. The other end, touches the 2 cm mark of the ruler, so it is 2 cm long.
Similarly, we can measure the length of the following objects
Measuring distance is like counting steps or jumps to find out how far things are from each other on a grid or map. We use units of distance, like meters, feet, km to measure the length or distance between two points.
Long distances measured using kilometers that is represented by km.
"How Tall?" is about measuring how high or tall something or someone is, like a tree or a person. We use units of measurement, like meters or feet, to find out the height from the ground to the top of the object or person.
Once upon a time in a park, there were boxes of flowers piled up high, forming a huge tower.
1. Look at the picture of the flower below. Can you guess the height of the flower with the help of the ruler given:
Sol: On closely looking at the picture, we get to know that the height of the flower is 6cm.
2. Upon looking at the following image, can you tell which one of the following kid is taller?
Sol: It can clearly be seen that the boy is taller than the girl.
In Summary, Measurement helps us find out how long, heavy, or full something is. We use units like centimeters (cm), meters (m), and liters (L) to measure length, capacity. Simple tools like rulers, weighing scales, and measuring cups help us measure things around us accurately.
6 videos71 docs28 tests

1. What are the different tools used for measuring lengths? 
2. How do we measure distances accurately? 
3. Why is it important to measure lengths and distances in everyday life? 
4. What units are commonly used to measure length? 
5. How can we practice measuring lengths and distances at home? 

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