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Class 6 old chapter names 2026-27: where each old NCERT chapter is now

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If your search for "Knowing Our Numbers class 6" or "Components of Food class 6" leads to nothing in your new textbook, this page is for you. Since 2024-25, Class 6 uses new NCERT books: Ganita Prakash for Maths (10 chapters) and Curiosity for Science (12 chapters). Their chapter names are new, and several topics now sit in Class 7 or Class 8. Below, each old chapter is matched to where its topics are now, with the page in the new book.

We read these locations in the new books ourselves, chapter by chapter; no practising teacher has checked this list yet. An old chapter rarely moves whole into one new chapter. Where a topic is split, moved to another class, or missing, we say so. If you spot a mistake, please tell us. For which books are new and which are reprints, see what changed in the 2026-27 NCERT books.

How we matched them

Maths: old chapters and where they are now

Old chapter name (old start page)Where its topics are in 2026-27
Knowing Our Numbers (page 1)Split. Class 6 Chapter 3, Number Play (from page 55), places 5-digit numbers on the number line with commas (page 59) and ends with simple estimation (section 3.11, page 69). Large numbers, lakhs and crores, and the Indian and International (American) ways of placing commas are in Class 7 Part I Chapter 1, Large Numbers Around Us (from page 1; the two systems side by side on page 8). We found Roman numerals only as history, in Class 8 Part 1 Chapter 3 (page 49).
Whole Numbers (page 19)No chapter of its own. The number line runs through Number Play (page 59) and Chapter 10, The Other Side of Zero (page 242). Properties such as "swapping terms does not change the sum" are in Class 7 Part I Chapter 2, Arithmetic Expressions (page 31).
Playing with Numbers (page 24)Class 6 Chapter 5, Prime Time (from page 107): factors and multiples, primes, co-prime numbers (page 115), prime factorisation (page 117) and divisibility tests (section 5.5, page 122). HCF and LCM moved to Class 7 Part II Chapter 3, Finding Common Ground (from page 47; HCF on page 48, LCM on page 56).
Basic Geometrical Ideas (page 46)Class 6 Chapter 2, Lines and Angles (from page 13): points, lines, rays, line segments and angles.
Understanding Elementary Shapes (page 59)Split. Measuring angles with a protractor (page 34), perpendicular lines (page 29) and reflex angles (page 51) are in Lines and Angles. Kinds of triangles are in Class 7 Part I Chapter 7, A Tale of Three Intersecting Lines (from page 146), and quadrilaterals in Class 8 Part 1 Chapter 4, Quadrilaterals (from page 82).
Integers (page 83)Class 6 Chapter 10, The Other Side of Zero (from page 242). Adding and multiplying integers continue in Class 7 Part II Chapter 2, Operations with Integers (from page 24).
Fractions (page 103)Class 6 Chapter 7, Fractions (from page 151); equivalent fractions are section 7.6 (page 163). Multiplying fractions is in Class 7 Part I Chapter 8, Working with Fractions (from page 173).
Decimals (page 133)Moved to Class 7: Part I Chapter 3, A Peek Beyond the Point (from page 46; decimal place value on page 58), and Part II Chapter 4, Another Peek Beyond the Point (from page 67).
Data Handling (page 142)Class 6 Chapter 4, Data Handling and Presentation (from page 74): pictographs (section 4.2, page 79) and bar graphs (section 4.3, page 85).
Mensuration (page 153)Class 6 Chapter 6, Perimeter and Area (from page 129; area from page 137).
Algebra (page 169)Moved to Class 7: Part I Chapter 4, Expressions using Letter-Numbers (from page 81).
Ratio and Proportion (page 177)Moved to Class 8: Part 1 Chapter 7, Proportional Reasoning-1 (from page 159; ratios on page 161), and Part 2 Chapter 3, Proportional Reasoning-2 (from page 55). We did not find ratios taught in Class 6 or Class 7 Ganita Prakash.

New Class 6 Maths chapters with no single old chapter behind them: Chapter 1, Patterns in Mathematics (from page 1), Chapter 8, Playing with Constructions (from page 187), and Chapter 9, Symmetry (from page 217).

Science: old chapters and where they are now

Old chapter name (old start page)Where its topics are in 2026-27
Components of Food (page 1)Class 6 Chapter 3, Mindful Eating (from page 35): carbohydrates (page 40), the chart of vitamins and minerals and the diseases their lack causes (page 44), roughage (page 46) and a balanced diet (section 3.4, page 51).
Sorting Materials into Groups (page 11)Class 6 Chapter 6, Materials Around Us (from page 101): lustre (page 107), and transparent, translucent and opaque materials (pages 108-109).
Separation of Substances (page 20)Methods of Separation in Everyday Life, Class 6 Chapter 9 (from page 163): sieving (page 167), getting salt back from salt water by evaporation (page 168), sedimentation, decantation and filtration (page 170), and separating with a magnet (page 174).
Getting to Know Plants (page 31)Class 6 Chapter 2, Diversity in the Living World (from page 9), which groups plants by their leaves (page 11) and roots (page 18). Germination is in Chapter 10 (section 10.2, page 188).
Body Movements (page 45)We did not find this topic in the new Class 6, 7 or 8 Curiosity: no chapter on bones, joints or the skeleton. Class 8 Chapter 5, Exploring Forces, only names the force our muscles make (page 66).
The Living Organisms: Characteristics and Habitats (page 58)Split. Habitats and adaptations are in Class 6 Chapter 2, Diversity in the Living World (page 27). The signs of a living thing are in Chapter 10, Living Creatures: Exploring their Characteristics (from page 183).
Motion and Measurement of Distances (page 74)Class 6 Chapter 5, Measurement of Length and Motion (from page 79): standard units (section 5.2, page 82) and linear and circular motion (page 92).
Light, Shadows and Reflections (page 86)Moved to Class 7: Chapter 11, Light: Shadows and Reflections (from page 153), with the pinhole camera on page 162. Transparent and opaque materials are also met in Class 6 Chapter 6 (pages 108-109).
Electricity and Circuits (page 95)Moved to Class 7: Chapter 3, Electricity: Circuits and their Components (from page 23); conductors and insulators are section 3.4 (page 34).
Fun with Magnets (page 104)Class 6 Chapter 4, Exploring Magnets (from page 61); the magnetic compass is on page 66.
Air Around Us (page 115)Class 6 Chapter 11, Nature's Treasures (from page 207): the gases in air (page 209) and wind and windmills (page 210).

New Class 6 Science chapters with no single old chapter behind them: Chapter 1, The Wonderful World of Science (from page 1), Chapter 7, Temperature and its Measurement (from page 123), the water chapter, Chapter 8 (from page 143), and Chapter 12, Beyond Earth (from page 231).

Three common mistakes

  1. Expecting one new chapter for each old one. Knowing Our Numbers is now split between Class 6 Number Play and Class 7 Large Numbers Around Us, and Playing with Numbers between Class 6 Prime Time and Class 7 Finding Common Ground.
  2. Looking for the old chapter title in the new index. Integers is now called The Other Side of Zero, and Components of Food is Mindful Eating. Search by topic, not by the old name.
  3. Using an old worksheet's exercise numbers or pages. "Exercise 3.4" or "page 24" in an old guide points to the old book. Decimals, Algebra, and Ratio and Proportion are not in the new Class 6 Maths book at all, so practise them only when your class reaches them, unless your school still follows the old syllabus.

8 questions of our own, with answers

These questions are ours, written for this page. Each sits on a topic whose chapter changed, and names the book chapter where it now lives. Every number was checked by a script.

Question 1 (Large Numbers Around Us, Class 7). A city's water board reports 7,45,30,600 litres supplied in a week. (a) Write this number in words in the Indian system. (b) Rewrite it with commas in the International system.

Answer: (a) seven crore forty-five lakh thirty thousand six hundred; (b) 74,530,600. In the Indian system the commas come after the thousands and then after every two digits: 7,45,30,600 is 7 crore, 45 lakh, 30 thousand and 600. The International system puts a comma after every three digits from the right, so the same number is 74,530,600: seventy-four million, five hundred thirty thousand, six hundred.

Question 2 (Prime Time, Class 6). Are 35 and 48 co-prime? Show it with prime factorisation.

Answer: yes. 35 = 5 × 7 and 48 = 2 × 2 × 2 × 2 × 3. No prime appears in both, so their only common factor is 1, and two numbers whose only common factor is 1 are co-prime.

Question 3 (Finding Common Ground, Class 7). A tailor has two ribbons, 84 cm and 126 cm long. She wants to cut both into pieces of the same length, as long as possible, with nothing left over. (a) How long is each piece? (b) How many pieces in all?

Answer: (a) 42 cm; (b) 5 pieces. The length must divide both 84 and 126, and be the largest such number: that is their HCF. 84 = 2 × 2 × 3 × 7 and 126 = 2 × 3 × 3 × 7, so the HCF is 2 × 3 × 7 = 42 cm. Then 84 ÷ 42 = 2 and 126 ÷ 42 = 3, so 5 pieces.

Question 4 (Finding Common Ground, Class 7). Two school bells ring at 8:00 a.m. One rings every 12 minutes, the other every 18 minutes. When do they next ring together?

Answer: at 8:36 a.m. The bells meet again after a number of minutes that is a multiple of both 12 and 18, the smallest one: the LCM. 12 = 2 × 2 × 3 and 18 = 2 × 3 × 3, so the LCM is 2 × 2 × 3 × 3 = 36 minutes after 8:00.

Question 5 (The Other Side of Zero, Class 6, and Operations with Integers, Class 7). In a class quiz, a right answer scores +10 and a wrong answer scores −5. Arun gets 4 answers right and 6 wrong. What is his score? Write it as a sum of integers.

Answer: +10. The right answers give 4 × (+10) = +40 and the wrong ones 6 × (−5) = −30, so the score is (+40) + (−30) = +10. Adding a negative number takes the total down.

Question 6 (Fractions, Class 6, and A Peek Beyond the Point, Class 7). Which is larger, 3/8 or 0.4?

Answer: 0.4. 3/8 = 3 ÷ 8 = 0.375, and 0.375 < 0.400. Without decimals: 0.4 = 2/5, and comparing 3/8 and 2/5 with the denominator 40 gives 15/40 against 16/40.

Question 7 (Perimeter and Area, Class 6). A rectangular poster is 14 cm long and 9 cm wide. (a) How long a strip of wood is needed to frame its edge? (b) What is its area?

Answer: (a) 46 cm; (b) 126 square centimetres. Perimeter = 2 × (14 + 9) = 46 cm. Area = 14 × 9 = 126 cm². The perimeter is a length (centimetres); the area counts unit squares (square centimetres).

Question 8 (finding your way in the new books). An older cousin's worksheet lists three Class 6 chapters to revise: Chapter 8, Decimals; Chapter 12, Ratio and Proportion; and Chapter 10, Fun with Magnets. For each, which new book and chapter should a Class 6 student open in 2026-27, and which can wait?

Answer: open Exploring Magnets now; Decimals waits for Class 7 and Ratio for Class 8. Fun with Magnets is now Class 6 Curiosity Chapter 4, Exploring Magnets (from page 61). Decimals is in Class 7 Ganita Prakash Part I Chapter 3, A Peek Beyond the Point (from page 46), and Ratio and Proportion in Class 8 Part 1 Chapter 7, Proportional Reasoning-1 (from page 159). Neither of these two is in the new Class 6 Maths book, so a Class 6 student meets them later, unless the school says otherwise.

How to check an AI's answer about old and new chapters

Practise the new chapters

Practice questions with answers for the new chapters named above:

Where CMDLearn fits

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Sources

All opened and read on 4 November 2026.

The chapter names and page numbers are from the books above. The matching, the wording and the 8 questions are our own. This page is general information; follow your teacher and your school's syllabus.

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