Fun with Symmetry Class 4 Maths Chapter 3 CBSE Notes 2025-26

This chapter introduces children to the idea of counting and patterns using real-life examples and activities. It encourages exploring how numbers work by grouping, pairing, and arranging objects in several creative ways. The notes also boost critical thinking by prompting students to look for patterns in numbers, coins, and even the page numbers of their own books.

Counting is not only about reciting numbers. The chapter starts with daily life situations, such as Muniamma making plates and cups, and Gundappa collecting coconuts from his trees. Children are encouraged to count objects either one by one or by making groups to make counting faster and more accurate. For example, if there are 5 coconut trees and each gives 5 coconuts, students can use multiplication rather than counting each coconut individually, promoting efficiency in calculation.

• Counting by grouping helps in faster addition and also leads children toward understanding multiplication.
• Grouping similar items (like cups, plates, laddoos, pedas) gives a clear picture of total quantities.
• Arranging objects in repeated patterns makes it simpler to count large numbers.

By asking, “How do you know?” after the counting, students are prompted to explain their reasoning, which helps develop confidence in handling numbers.

Patterns are everywhere in our lives — in the way things are arranged, in nature, or even in how we use money. The chapter encourages observing and describing patterns from a “top view” for better visualization. It asks children to look at objects, coins, or numbers and identify any repeating structures or arrangements.

• Recognizing patterns supports logical thinking and prediction skills.
• Visual patterns can sometimes be more understandable for young learners than numbers alone.
• Patterns also lay the groundwork for understanding sequences in math.

Students are encouraged to observe patterns not only in objects but also in daily experiences, including the arrangement of chairs, tiles, or even petals in a flower.

Money is another excellent way to learn about patterns and numbers. The chapter includes activities where children use play money with different values (₹1, ₹2, ₹5, ₹10) to create given amounts (such as ₹36, ₹125, and ₹183). They need to arrange the coins in creative ways to make counting and calculation easy.

• Such activities develop problem-solving skills and help visualize mathematical ideas.
• Arranging coins in triangles or other patterns makes it easier to count and see the total value quickly.
• Describing one's grouping helps improve communication and mathematical language.

Students practise describing how they made a certain amount, which encourages them to think deeper about addition and the combinations possible.

A major focus is the differentiation between even and odd numbers. By arranging coins or objects into pairs, children see that:

• Even numbers can be made into exact pairs (for example, 2, 4, 6, 8…)
• Odd numbers always leave one item out when paired (for example, 1, 3, 5, 7…)

Recognizing the last digit’s role, students learn easy tricks to identify even and odd numbers. This understanding is extended when they notice that all numbers in the 2 times table are even. The concept is reinforced with activities such as circling the odd numbers and squaring the even numbers from a list, and linking it to simple observations, like page numbers in books.

Students classify numbers from 1 to 100 as even or odd, honing their skills of observation and analysis. The chapter presents lists and tables that separate odd and even numbers, helping students see patterns and practice identification.

• Odd numbers: 1, 3, 5, 7, ... up to 99
• Even numbers: 2, 4, 6, 8, ... up to 100

A simple rule is established: numbers ending with 0, 2, 4, 6, or 8 are even, while those ending with 1, 3, 5, 7, or 9 are odd.

The chapter encourages students to spot interesting patterns around odd and even numbers. For example, they observe that both the numbers before and after an odd number are even. They are then asked to check if both the numbers before and after an even number are odd and discuss with classmates.

This exploration helps deepen their understanding of number patterns, and sparks curiosity about how numbers behave in sequence.

Students practise making two-digit numbers using given digits without repeating the same digit, such as forming 16 and 61 from the digits 1 and 6. They are then guided to check if these numbers are even or odd. The concept is extended by asking them to pick any two digits to make more even numbers and see if there are more even or odd numbers between 1 and 100.

1. Pick two digits (e.g. 2 and 8).
2. Create 2-digit combinations: 28 and 82.
3. Check if they are even or odd based on their units digit.

This strengthens a child's understanding of forming numbers and reinforces the rule for identifying even numbers (if the last digit is even).

Visual aids like crayons help in understanding the distinction between even and odd. Students are asked to draw a square on even numbers and a circle on odd numbers based on the arrangement. These hands-on activities are simple but highly effective, appealing especially to visual and kinesthetic learners.

The chapter’s teacher notes play an important role in prompting discussions. Instead of only focusing on answers, the emphasis is on discovering and expressing the process used to arrive at the answer, enhancing communication and logical thinking.

• Counting is made fun by arranging objects and discussing the best ways to count faster.
• Identifying and making number patterns improves problem-solving and prediction skills.
• Regular activities involving numbers and their properties remove the fear of maths and promote confidence.

By the end of this chapter, students are comfortable with counting, grouping, pairing, making patterns, and identifying even and odd numbers up to 100. These foundational skills prepare them for multiplication, addition, and later chapters in mathematics.

Class 4 Maths Chapter 3 Notes – Let Us Count: Key Points for Quick Revision

These CBSE Class 4 Maths Chapter 3 revision notes on Let Us Count make it easy to learn about counting, grouping, and patterns. Students quickly review odd and even numbers and understand their differences through examples and activities. This overview helps in building a strong number sense required for later chapters.

The Class 4 Maths notes for Chapter 3 use simple language and real-life examples so every student can grasp the basics. By summarising grouping, money patterns, and exploring number properties, these notes help boost math confidence for all learners.