NCERT Class 7 Mathematics Ganita Prakash: Chapter 6 — Number Play
Chapter 6 of NCERT's Class 7 Mathematics, 'Ganita Prakash,' titled 'Numbers Tell us Things,' introduces a playful concept of numbers conveying information. It revisits children from Grade 6 who now use a new rule to call out numbers. The core idea is that each child states the count of children standing in front of them who are taller. The chapter encourages students to observe arrangements, deduce the meaning of these numbers, and apply the rule. It includes exercises where students must arrange stick figures or draw arrangements to match given number sequences and determine if statements about the numbers are always, sometimes, or never true. This chapter aims to enhance logical reasoning and problem-solving skills by connecting numerical representation to real-world observations and abstract rules, crucial for CBSE Mathematics learning.
Quick info
| Board | CBSE / NCERT |
|---|---|
| Class | Class 7 |
| Subject | Mathematics |
| Book | Ganita Prakash |
| Chapter | Chapter 6 — Number Play |
| Language | English |
| PDF type | NCERT Textbook |
| Session | CBSE 2026 |
| Reading time | 2 minutes |
| Word count | 321 |
Learning outcomes
- Understand that numbers can represent specific information based on context.
- Apply a given rule to determine the number a person should say.
- Analyze different arrangements of people based on height and relative position.
- Evaluate statements for truthfulness (Always True, Only Sometimes True, Never True) with reasoning.
- Solve problems involving number sequences derived from specific rules.
Vocabulary
| Word | Meaning |
|---|---|
| Arrangement | The way in which things are placed or organized. |
| Sequence | A particular order in which related events, movements, or things follow each other. |
| Taller | Of great height. |
| Reasoning | The action of thinking about something in a logical, sensible way. |
| Figure | A number representing a particular amount or value. |
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Practice questions
- If a person says '0', what does it imply about their height relative to others in front of them? Answer: It implies they are the tallest among the people in front of them.
- Consider a group of 7 people. If the sequence of numbers called out is 0, 1, 1, 2, 4, 1, 5, what does the number '4' represent? Answer: The person who called '4' has 4 people in front of them who are taller than them.
- Is the statement 'If a person is the tallest, then their number is 0' Always True, Only Sometimes True, or Never True? Answer: Always True.
- What is the largest number possible in a group of 8 people according to the rule? Answer: 7 (The person would have 7 people in front of them who are taller).
Frequently asked questions
What is the main concept of Chapter 6, 'Numbers Tell us Things'?
The chapter explores how numbers can convey specific information, particularly related to the relative heights of people in an arrangement.
What rule do the children follow to call out numbers in this chapter?
Each child calls out the number of children in front of them who are taller than them.
What does saying '0' mean for a child in the arrangement?
It means there are no children in front of them who are taller, implying they are the tallest among those in front.
What kind of exercises are included in this chapter?
Exercises involve arranging figures to match number sequences and determining if statements about the numbers are Always True, Only Sometimes True, or Never True.
What skill does this chapter help develop?
It helps develop logical reasoning, problem-solving, and analytical skills by interpreting numerical patterns.
Can the first person in line say a number other than 0?
No, the first person has no one in front of them, so they must say 0.
Related resources
Important topics
Topics covered
NCERT Class 7 Mathematics — Ganita Prakash — Chapter 6 — Number Play. Verified by NCERT Help Editorial Team. Reviewed on 29 Jul 2026. Last updated 10 Aug 2026.