Mathematics · Class 2
What is Long, What is Round?
Learn What is Long, What is Round? with notes, examples, and practice questions.
3 sections15–25 min read3 MCQs · 1 examples
Chapter Overview
An object can be long and round at the same time, like a rolling pin.
This chapter develops spatial thinking by comparing long and short objects and exploring round surfaces. Children observe that shape affects how an object moves: curved surfaces roll, while flat surfaces usually slide.
Comparing Length
- Place two objects at the same starting line before comparing them.
- Use longer than, shorter than, and equal in length.
- A flexible object such as a string can be straightened before its length is compared.
Rolling and Sliding
- A ball rolls because its surface is curved all around.
- A box slides easily because it has flat faces.
- A cylinder can roll on its curved surface and slide on a flat circular face.
Solved Examples
Step-by-step solutions — read each step before checking the final answer.
Compare and Predict
A pencil and a crayon start at the same line. The pencil reaches farther. Which is longer, and which object is likely to roll?
- 1Compare their far ends: the pencil reaches farther, so it is longer.
- 2Look at the crayon's curved surface.
- 3The crayon can roll on its curved side.
Answer
The pencil is longer, and the crayon is likely to roll.
Key Points to Remember
- ✓ Use a common starting point to compare length
- ✓ Curved surfaces help objects roll
- ✓ Flat faces help objects slide
Exam Tips
- • Check both the length and the surface named in the question
- • Do not compare objects from different starting points
Practice MCQs — What is Long, What is Round?
Test your understanding with topic-wise multiple choice questions. Explanations appear after each answer.
Question 1 of 3Score: 0/0
Which object is most likely to roll?