🦸 Grades 7 to 12
Maths missions, chapter by chapter.
Every chapter is a full lesson: ideas in short steps, worked examples, practice that checks itself, three activities, a quiz and homework.
Captain Calc here! Pick your class and start with any chapter. The first two lessons of each class are open to everyone. Make a free account and every lesson opens for a whole year.
Class 7 maths
12 of 12 lessons ready
Class 8 maths
3 of 13 lessons ready
Term 1
- Rational numbers
- Linear equations in one variable
- Understanding quadrilaterals
- Data handling and probability coming soon
- Squares and square roots coming soon
- Cubes and cube roots coming soon
Term 2
- Comparing quantities coming soon
- Algebraic expressions and identities coming soon
- Mensuration coming soon
- Exponents and powers coming soon
- Direct and inverse proportion coming soon
- Factorisation coming soon
- Introduction to graphs coming soon
Class 9 maths
1 of 12 lessons ready
Term 1
- Number systems
- Polynomials coming soon
- Coordinate geometry coming soon
- Linear equations in two variables coming soon
- Lines and angles coming soon
- Triangles coming soon
Term 2
- Quadrilaterals coming soon
- Circles coming soon
- Heron's formula coming soon
- Surface areas and volumes coming soon
- Statistics coming soon
- Probability coming soon
Class 10 maths
0 of 12 lessons ready
Term 1
- Real numbers coming soon
- Polynomials and their zeroes coming soon
- Pairs of linear equations coming soon
- Quadratic equations coming soon
- Arithmetic progressions coming soon
- Similar triangles coming soon
Term 2
- Coordinate geometry coming soon
- Introduction to trigonometry coming soon
- Heights and distances coming soon
- Circles and tangents coming soon
- Areas related to circles coming soon
- Statistics and probability coming soon
Class 11 maths
0 of 12 lessons ready
Term 1
- Sets coming soon
- Relations and functions coming soon
- Trigonometric functions coming soon
- Complex numbers coming soon
- Linear inequalities coming soon
- Permutations and combinations coming soon
Term 2
- Binomial theorem coming soon
- Sequences and series coming soon
- Straight lines coming soon
- Conic sections coming soon
- Limits and derivatives coming soon
- Statistics and probability coming soon
Class 12 maths
0 of 12 lessons ready
Term 1
- Relations and functions coming soon
- Inverse trigonometric functions coming soon
- Matrices coming soon
- Determinants coming soon
- Continuity and differentiability coming soon
- Applications of derivatives coming soon
Term 2
- Integrals coming soon
- Applications of integrals coming soon
- Differential equations coming soon
- Vectors coming soon
- Three-dimensional geometry coming soon
- Probability coming soon
How these lessons are made
We write each lesson with Google's Gemini AI to a fixed plan, then a second AI solves every question without seeing the answers. A question stays only if both agree. Each lesson's page says whether one of our teachers has read it yet. If something looks wrong, please tell us. 16 of 73 lessons are ready so far.
👩🏫 Are you a teacher?
Use every lesson here in your own classes. Apply to teach with us, and you start once we approve you.