Class 5 Mathematics • Maths Mela • Chapter 3 • Reprint 2026–27
Angles as Turns: concept in one view
This original companion develops full, half and quarter turns; clockwise and anticlockwise movement; right, acute and obtuse angles; estimation and measurement. Understand the model, work through the example, complete the hands-on task and justify every answer.
Learning goals
- full, half and quarter turns
- clockwise and anticlockwise movement
- right, acute and obtuse angles
- estimation and measurement
Worked example
A quarter turn is 90°, a half turn is 180°, and a full turn is 360°.
Activity
Face north, make quarter and half turns in both directions, and record the direction after each turn.
Practice
- Classify a 45° angle.
- How many quarter turns make one full turn?
- Draw an obtuse angle and estimate its measure.
Problem-solving checklist
- Write what is known and what must be found.
- Choose a diagram, model, table or number sentence.
- Estimate before the exact calculation where useful.
- Include the correct unit and check whether the answer is reasonable.
Frequently asked questions
Which current NCERT book contains this chapter?
“Angles as Turns” is Chapter 3 of Class 5 Maths Mela (code eemm1), Reprint 2026–27.
Are the learning-material sheets separate chapters?
No. Fraction kits, shape sheets, number tokens, nets and cut-outs placed after Chapter 15 are supporting materials, not Chapters 16 or beyond.
Is this an official answer key?
No. It is an independently written learning guide. Use the NCERT chapter for the complete tasks and teacher-guided discussion.
Official sources
Source-checked against publication 0533 and the 2026–27 reprint. Legacy Math-Magic Book V titles are excluded.