Class 8 Mathematics

NCERT20 h of video

NCERT Ganita Prakash, Textbook of Mathematics for Grade 8, Part I (NCF-SE 2023); every page footer in this chapter file reads 'Reprint 2026-27'
The book's official PDFs, chapter by chapter → · Using the old book? Find your chapter →
कक्षा 8 की 97 videos हिंदी में भी · 97 in Hindi · All Hindi videos

What Class 8 Mathematics covers

One thing each chapter sets out to make you able to do, in the order the book teaches them.

  • Explain why a locker's toggle count is exactly the count of factors of its numberCh 1A Square and A Cube
  • Continue a doubling table from a given starting value and fill missing entriesCh 2Power Play
  • Separate what the chapter actually requires: one defining condition on the sequence (a fixed order), one procedure for using it (pairing its terms one-to-one with the objects, in that order), and one property it then goes looking for (that the sequence be unending and convenient to say)Ch 3A Story of Numbers
  • State the carpenter's three questions about the two strips — length, joining point, crossing angle — and say which of the three turns out not to matterCh 4Quadrilaterals
  • Write a chosen number as a sum of two or more consecutive numbers, and say when this can be done in more than one wayCh 5Number Play
  • Predict how a product changes when one factor rises by one, and justify the prediction from the distributive property rather than from two computationsCh 6We Distribute, Yet Things Multiply
  • Read a table of widths and heights and decide, from the numbers alone, which of several rectangles have the same shapeCh 7Proportional Reasoning-1
  • State what the symbol % abbreviates, and rewrite any percentage as a fraction with denominator 100Ch 1Fractions in Disguise
  • Explain why doubling every side of a square multiplies its area by four rather than by two, and give the general reason in terms of side × sideCh 2The Baudhāyana-Pythagoras Theorem
  • Write a recipe or mixture stated in amounts as a ratio, and say what the ratio is claiming that the amounts alone do notCh 3Proportional Reasoning-2
  • State what self-similarity claims about a shape, in the form "this part, magnified, is the whole"Ch 4Exploring Some Geometric Themes
  • Compute the mean of a small collection from its dot plot and mark it on the same axisCh 5Tales by Dots and Lines
  • Follow a stated chain of arithmetic instructions with a letter in place of the starting number, writing the expression after each instructionCh 6Algebra Play
  • State what quantity is being counted when an area is reported, and name the square that is doing the countingCh 7Area

Where students most often slip up

Sentences students actually say, one from each chapter, taken from the notes the videos were made from.