Mathematics Class 1 - Lengths Weights-And-Comparisons Notes
Comprehensive study notes for Class 1 - Lengths Weights-And-Comparisons olympiad preparation
Lengths, Weights and Comparisons
Welcome to the chapter on Lengths, Weights and Comparisons for Class 1. In this chapter, you will learn how to compare objects by their length and weight, and understand words like longer, shorter, heavier, and lighter. By the end of this chapter, you will be able to compare things around you easily!
Introduction
We see objects of different sizes and weights every day. Some things are long, some are short. Some are heavy, some are light. Learning to compare helps us describe and understand the world better.
Comparing Lengths
- Longer: An object that is more in length.
- Shorter: An object that is less in length.
Example: A pencil is longer than an eraser.
A spoon is shorter than a ruler.
Comparing Weights
- Heavier: An object that weighs more.
- Lighter: An object that weighs less.
Example: A school bag is heavier than a pencil box.
A feather is lighter than a book.
How to Compare?
- Place two objects side by side to see which is longer or shorter.
- Hold two objects in your hands to feel which is heavier or lighter.
Words We Use
- Long, short
- Tall, short
- Heavy, light
- More, less
Fun Activity: Compare at Home!
Find two objects at home. Which one is longer? Which one is heavier? Try with different things like books, spoons, or toys!
Summary
- We can compare objects by length and weight.
- Use words like longer, shorter, heavier, and lighter to compare.
- Comparing helps us understand the world around us.
Practice Questions
- Which is longer: a pencil or a crayon?
- Which is heavier: a book or a feather?
- What word do we use for something that is less in length?
- Name something that is light in weight.
- How do you compare the weight of two objects?
Challenge Yourself
- Find three objects and arrange them from shortest to longest.
- Find two things that are almost the same weight.
Did You Know?
- An elephant is one of the heaviest animals on land!
- A paperclip is very light and easy to lift.
Glossary
- Length: How long something is.
- Weight: How heavy something is.
- Compare: To look at two or more things to see how they are different or same.
- Heavier: More weight.
- Lighter: Less weight.
Answers to Practice Questions
- A pencil is usually longer than a crayon.
- A book is heavier than a feather.
- Shorter.
- A feather, a paperclip, or a leaf.
- By holding them and feeling which is heavier or lighter.
Keep comparing things around you and have fun learning!