Class 4 Maths Chapter 1 PDF: Shapes Around Us (Maths Mela)

Class 4 Maths Chapter 1, Shapes Around Us, opens NCERT’s Grade 4 Maths Mela textbook (2026–27) with Deepa’s visit to Delhi monuments (India Gate, Qutub Minar, Jantar Mantar) to explore 3D prisms and pyramids, cube towers on triangular dot paper, right/acute/obtuse angles with straws, pentagons, and circles.

What Class 4 Mathematics Chapter 1 Covers

3D Shapes, Prisms, Pyramids & Cube Towers models real buildings using wooden blocks; sorts 3D shapes into prisms and pyramids by their faces, edges, and corners; and builds and draws cube towers on triangular/isometric dot paper.

When Lines Meet — Right, Acute & Obtuse Angles and Circles explores angles formed when lines meet using straw models — identifying right angles (L-shaped corners), acute angles (smaller than a right angle), and obtuse angles (larger than a right angle) — plus 5-sided regular pentagons and circle centres/radii.

Exercises in Chapter 1

• Let Us Do, Let Us Try, and Let Us Solve textbook exercises.
• Hands-on straw/grid models, dot-paper drawing, and number games.

Read Class 4 Mathematics Chapter 1 Online

More Chapters

• Next: Chapter 2: Hide and Seek
• Hindi medium: Class 4 Maths Chapter 1 PDF in Hindi (Ganit Mela)
• All Mathematics chapters and the other Class 4 books: Class 4 NCERT books 2026-27
• All Class 1 to 12 NCERT Textbooks: NCERT Books PDF (Class 1–12)
• Every book chapter by chapter: NCERT chapter wise PDF

FAQ

What is the difference between a prism and a pyramid in Chapter 1?
A prism has two identical, parallel flat end-faces connected by rectangular side faces, whereas a pyramid has a single base polygon and triangular side faces that meet at a single top point (apex).

What are right, acute, and obtuse angles?
A right angle looks like the corner of a book or the letter ‘L’ (90°); an acute angle is sharper/smaller than a right angle; and an obtuse angle opens wider than a right angle.

Updated 2026–27 NCERT Class 4 Books & Chapter-Wise PDFs

Looking for all chapters and the latest 2026–27 NCF NCERT textbooks for Class 4? Open any chapter below to download its official PDF or read our Read Online & Notes study guide, or visit the complete NCERT Class 4 Books PDF (2026–27 Main Page) for all subjects or All NCERT Books PDF (Class 1 to 12).