📘 CLASS 8 NCERT REVISION SERIES

🔥 Navodaya Latest Syllabus Detailed Revision + Tricks + Mnemonics 🔥

📐 Mathematics Revision

Chapter 1: Rational Numbers

  • Numbers written in p/q form are rational numbers.
  • Denominator cannot be zero.
  • Rational numbers can be positive or negative.
🎯 Trick: “PQ Rule” → Rational numbers are always in p/q form.
🧠 Mnemonic: “Q never zero.”

Chapter 2: Linear Equations

  • Equation with variable power 1 is linear.
  • Transpose method widely used.
🎯 Trick: “Change side, change sign.”

Chapter 3: Understanding Quadrilaterals

  • Quadrilateral has 4 sides.
  • Sum of interior angles = 360°
🧠 Mnemonic: “Quad means Four.”

Chapter 4: Practical Geometry

  • Construction of quadrilaterals using scale and compass.
  • SSS, SAS methods important.
🎯 Trick: “Scale + Compass = Geometry Master.”

Chapter 5: Data Handling

  • Pie chart shows data in circle form.
  • Bar graph easy comparison tool.
🧠 Mnemonic: “Pie is Circle Data.”

Chapter 6: Squares and Square Roots

  • Square root means reverse of square.
  • Perfect squares important.
🎯 Trick: “Root removes square.”

Chapter 7: Cubes and Cube Roots

  • Cube = number × number × number.
  • Cube root is opposite of cube.
🧠 Mnemonic: “Cube has 3 powers.”

🧪 Science Revision

Crop Production and Management

  • Kharif crops grow in rainy season.
  • Rabi crops grow in winter season.
🎯 Trick: “Kharif = Rain, Rabi = Winter.”

Microorganisms

  • Bacteria, fungi, protozoa, algae are microorganisms.
  • Useful in medicine and food.
🧠 Mnemonic: “BFPA” → Bacteria, Fungi, Protozoa, Algae.

Coal and Petroleum

  • Coal and petroleum are exhaustible resources.
  • Petroleum called black gold.
🎯 Trick: “Black Gold = Petroleum.”

Combustion and Flame

  • Combustion needs oxygen.
  • Fire triangle = fuel + heat + oxygen.
🧠 Mnemonic: “FHO” → Fuel, Heat, Oxygen.

Cell Structure and Functions

  • Cell is basic unit of life.
  • Nucleus controls activities.
🎯 Trick: “Nucleus = Brain of Cell.”

Reproduction in Animals

  • Viviparous animals give birth.
  • Oviparous animals lay eggs.
🧠 Mnemonic: “Ovi = Egg.”

🌍 Social Science Revision

History: How, When and Where

  • History tells about past events.
  • James Mill divided Indian history.
🎯 Trick: “Past = History.”

From Trade to Territory

  • East India Company expanded rule.
  • Battle of Plassey important.
🧠 Mnemonic: “Trade became Rule.”

Geography: Resources

  • Resources are useful things.
  • Natural, human and human-made resources.
🎯 Trick: “NHH” → Natural, Human, Human-made.

Mineral and Power Resources

  • Coal and petroleum are fossil fuels.
  • Solar energy is renewable.
🧠 Mnemonic: “Solar saves future.”

Civics: The Indian Constitution

  • Constitution is supreme law.
  • Fundamental rights important.
🎯 Trick: “Constitution = Rule Book.”

📖 English Revision

Honeydew Important Chapters

  • The Best Christmas Present in the World
  • The Tsunami
  • Glimpses of the Past
  • Bepin Choudhury’s Lapse of Memory
🧠 Mnemonic: “BTGB” → Best, Tsunami, Glimpses, Bepin.

Grammar Quick Notes

  • Tenses
  • Voice
  • Modals
  • Prepositions
🎯 Trick: “TVMP” → Tense, Voice, Modals, Prepositions.

📚 Hindi Revision

वसंत भाग

  • ध्वनि
  • लाख की चूड़ियाँ
  • बस की यात्रा
🧠 Mnemonic: “धलाब” → ध्वनि, लाख, बस।

Hindi Grammar

  • संधि
  • समास
  • अलंकार
  • मुहावरे
🎯 Trick: “SSAM” → संधि, समास, अलंकार, मुहावरे।