Patterns — Class 4 Mathematics (Samacheer Kalvi)
TN State Board (Samacheer Kalvi) Class 4 Mathematics, Chapter 3. Number and shape patterns.
1. About this chapter
This chapter covers Patterns as part of the Class 4 Samacheer Kalvi Mathematics curriculum. It deals with number and shape patterns and builds conceptual understanding essential for the TN School Term Exam.
By the end of this chapter, students will be able to:
- Identify and extend number patterns
- Solve simple pattern-based puzzles
2. Key concepts
- Concept 1: Identify and extend number patterns.
- Concept 2: Solve simple pattern-based puzzles.
3. Important terms and formulas
| Term / Formula | Description |
|---|---|
| Identify and extend number… | Identify and extend number patterns |
| Solve simple pattern-based puzzles… | Solve simple pattern-based puzzles |
4. Worked examples
Example 1. Applying a key concept from this chapter.
Solution: Identify the relevant principle → apply the formula or rule → state the answer with correct units.
Example 2. A typical exam-style question on patterns.
Solution: Break the problem into steps, use the appropriate formula and verify the answer.
5. Common mistakes
- Mistake: Skipping units or forgetting to state them. Fix: Always write units alongside every quantity and answer.
- Mistake: Confusing similar terms or concepts in this chapter. Fix: Make a comparison table of the terms during revision.
6. Practice (exam-style)
- Define the main term or principle covered in Chapter 3.
- Give two real-life examples related to patterns.
- Solve a short numerical or descriptive question from this chapter.
- State one important formula and explain each symbol.
7. Answer key (hints)
- Refer to section 2 (Key concepts) above for the definition.
- Examples should be drawn from daily experience and local context.
- Apply the formula from section 3, show all steps clearly.
- Formula with units — refer to the textbook glossary for symbol meanings.
8. Quick revision
- Class 4 Mathematics — Chapter 3: Patterns.
- Core idea: Number and shape patterns.
- Key outcomes: Identify and extend number patterns; Solve simple pattern-based puzzles.
- Always revise diagrams / tables from the Samacheer Kalvi textbook before the exam.
