Class 4 Maths Chapter 11, Fun with Symmetry, explores reflection symmetry through folded ink-blot designs, paper aeroplanes, hole-punching puzzles, mirror halves of words (WOW, MOM, CAT), and floor tiling tessellations.
What Class 4 Mathematics Chapter 11 Covers
Line of Symmetry, Ink Blots & Paper Folding folds paper to make symmetrical ink-blot art, paper aeroplanes, and cut-out garlands; identifies single and multiple lines of symmetry; and tests mirror reflections.
Tiling the Tiles — Tessellations Without Gaps investigates which geometric tile shapes fit together on a floor without leaving gaps or overlapping, and creates repeating border and floor patterns.
More symmetry play: children make ink-blot designs and a paper aeroplane and mark its lines of symmetry, find which digits 0–9 look the same in a mirror, and write words like CAT, TAP, WOW and HEN so they can be read in a mirror. In Tiling the Tiles they spot the repeating unit in a pattern, design tiles for Bablu Chacha’s tile shop, and make a ‘catty wall’ of cat-shaped tiles that fit with no gaps.
Exercises in Chapter 11
- 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 11 Online
More Chapters
- Previous: Chapter 10: Elephants, Tigers, and Leopards
- Next: Chapter 12: Ticking Clocks and Turning Calendar
- Hindi medium: Class 4 Maths Chapter 11 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 a line of symmetry?
A line of symmetry is a line that divides a figure or design into two identical mirror-image halves that match each other completely when folded along that line.
Why cannot circular tiles alone tile a floor without gaps?
Curved edges of circles touch only at single points, leaving curved triangular gaps between them, whereas squares, rectangles, triangles, and hexagons fit edge-to-edge without gaps.
What is a tessellation?
A pattern of repeating tiles that covers a surface with no gaps or overlaps.