Fun with Symmetry
CBSE · Class 4 · Mathematics
Quick revision notes for Fun with Symmetry — CBSE Class 4 Mathematics. Key concepts, formulas, and definitions for last-minute revision.
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Key Topics to Revise
1. Core Ideas of Symmetry
- A symmetrical pattern can be divided into two equal halves.
- The dividing line is called the line of symmetry.
- A mirror helps in checking reflection.
2. Ink Design and Folding Activities
- The ink design activity begins by folding a sheet of paper in half.
- After folding, water colour drops are sprinkled in the centre of the fold.
- The paper is then pressed so the colour spreads evenly.
3. Paper Folding, Cuts, and Holes
- Mini made a design by folding and cutting paper.
- Rani folds a paper twice and makes a straight cut at the corner.
- Rani also cuts out two squares on two sides.
4. Mirror Games and Special Numbers
- A mirror can be placed to check whether a shape or word looks the same after reflection.
- Students are asked to circle numbers whose mirror image is the same as the original number.
- The digits from 0 to 9 are checked for this property.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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