Academia Aeternum · Class 9 · CBSE / NCERT

Class 9,
Mastered
Not Just Passed

A dedicated home for Class 9 Mathematics and Science — chapter-by-chapter NCERT notes, solved exercises, MCQs, and an AI tutor built for the CBSE 2026–27 syllabus.

4 Subjects Covered
100% NCERT Aligned
2026–27 CBSE Syllabus
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Class 9 Mathematics

Numbers, Proofs
& Every Shape in Between

From Number Systems to Heron's Formula — every NCERT chapter broken into clear concepts, worked examples, and exercise-by-exercise solutions.

Explore Mathematics →
  • Number Systems & PolynomialsReal numbers, laws of exponents, factorisation, identities
  • 📈
    Coordinate & Linear EquationsCartesian plane, plotting points, two-variable equations
  • 🔺
    GeometryEuclid's axioms, lines & angles, triangles, quadrilaterals, circles
  • 📐
    Mensuration & StatisticsHeron's formula, surface areas & volumes, data handling

Class 9 Science

Physics, Chemistry
& the Living World

One integrated Science course — Physics, Chemistry, and Biology — taught the way NCERT intends: concept-first, experiment-backed, exam-ready.

Explore Science →
  • PhysicsMotion, force & laws of motion, gravitation, work & energy, sound
  • ChemistryMatter, purity & separation, atoms & molecules, atomic structure
  • 🧬
    BiologyThe cell, tissues, diversity of life, health & disease
  • 🧪
    Lab & Diagram PracticeLabelled diagrams, activities, and viva-style Q&A

Why This Site

Built Only
for Class 9

No clutter from other classes, no unrelated streams — just Class 9 Maths and Science, structured exactly the way your CBSE exam expects.

  • 📘
    Chapter-Wise NCERT NotesEvery chapter summarised, no page left unexplained
  • Solved Exercises & MCQsIn-text questions, exercise sums, and objective practice
  • 🤖
    AI Doubt-SolvingInstant, step-by-step help embedded in every chapter
  • 🧭
    A Foundation That LastsConcepts built here carry straight into Class 10 and beyond

Class 9 Curriculum

Every Subject, In Full

Mathematics and Science — nothing more, nothing less than Class 9 needs.

📐 Mathematics
  • Number Systems & Polynomials
  • Coordinate Geometry
  • Linear Equations in Two Variables
  • Lines, Angles & Triangles
  • Quadrilaterals & Circles
  • Heron's Formula, Surface Areas & Volumes
  • Statistics
Explore →
Physics
  • Motion
  • Force & Laws of Motion
  • Gravitation
  • Work & Energy
  • Sound
Explore →
Chemistry
  • Matter in Our Surroundings
  • Is Matter Around Us Pure
  • Atoms & Molecules
  • Structure of the Atom
Explore →
🧬 Biology
  • The Fundamental Unit of Life
  • Tissues
  • Diversity in Living Organisms
  • Why Do We Fall Ill
  • Natural Resources
  • Improvement in Food Resources
Explore →

Academic Year 2026–27

Four Subjects. One Class.

Everything Class 9 asks of you — aligned to the CBSE 2026-27 syllabus.

AI-Powered Learning · Live

Your Personal
AI Tutor —
For Every Chapter

Embedded inside every Class 9 chapter, exercise, and MCQ set — get instant, step-by-step help exactly when you're stuck.

💡 Concept Explainer 🧮 Step-by-Step Solver 🎯 MCQ Analyser 📝 Note Summariser 🔁 Practice Generator
  • 01
    Ask Anything, AnywhereHighlight any line in a chapter and ask the AI to simplify it or connect it to real life.
  • 02
    Instant Doubt ResolutionStuck on a derivation or a proof? The AI walks through every step — not just the answer.
  • 03
    MCQ & Exercise FeedbackAfter every quiz, understand exactly why an answer was right or wrong.
  • 04
    A Foundation for What's NextConcepts are flagged where they matter most for Class 10 and future competitive exams.

Latest from the Blog

What's Being
Studied Right Now

Live-updated Class 9 chapter notes and solved problems, added by our educators every week.

All Study Materials →
New Exercise-12.1
"
The function of education is to teach one to think intensively and to think critically. Intelligence plus character — that is the goal of true education.
— Martin Luther King Jr.