What is new in class 7 mathematics?

Less that is new than application — class 6 algebra is here put to use in ratio, percentage and equations.

Is understanding the solution enough?

No. "Understood the solution" and "can do it" are different. Retrying three days later without the solution shows the real position.

What if I coast this year?

Gaps form silently and surface in classes 8 and 9, when repairing them is far harder.

Class 7 Mathematics Book

বাংলায় পড়তে চাও? দেখো: সপ্তম শ্রেণির গণিত বই

Nothing dramatic happens in class 7 mathematics, and that is its danger. The shock of algebra registers in class 6 and the pressure of SSC begins in class 8 — in the quiet middle year gaps form silently and surface two years later.

What this year is for

The algebraic idea introduced in class 6 goes into use this year — in ratio, percentage, simple equations and geometric reasoning. The work is less about learning something new than about applying what came before, which is precisely why last year’s gaps bite here.

Mathematics: learn it with interactive animations

An idea that is hard to picture from a still textbook diagram becomes obvious when you change the values yourself and watch it happen. Each simulation below comes with a full plain-language explanation, the formulas, solved examples, common mistakes and exam tips, so understanding and revision happen together.

Pythagorean Theorem (Grade 8–10 · animation)
Trigonometric Ratios and the Unit Circle (Grade 10–11 · animation)
Quadratic functions and their graphs (Grade 9–11 · animation)
Circle theorems (Grade 9–10 · animation)
Heights and distances: elevation and depression angles (Grade 9–10 · animation)
Probability: experimental vs theoretical probability (Grade 9–11 · animation)
Arithmetic and Geometric Sequences (Grade 10–11 · animation)
Mean, Median and Mode (Grade 9–10 · animation)
Sets and Venn Diagrams (Grade 7–11 · animation)
Linear equations: graphs, slope and simultaneous pairs (Grade 8–10 · animation)
Graphs of sin, cos and tan (Grade 10–12 · animation)
Completing the Square and the Quadratic Formula (Grade 9–10 · animation)
Area of a Circle: Proof, Formula and Solved Problems (Grade 7–10 · animation)
Volume and Surface Area of Solids: Cube, Cuboid, Cylinder, Cone, Sphere (Grade 8–10 · animation)
Similar Triangles: Scale Factor, AA, SSS, SAS and Shadow Heights (Grade 8–10 · animation)
Coordinate Geometry: Distance, Midpoint, Slope, Section Formula and Locus (Grade 9–11 · animation)
Conic Sections: Circle, Ellipse, Parabola and Hyperbola (Grade 11–12 · animation)
Function Transformations: Shifts, Stretches and Reflections (Grade 9–11 · animation)
Derivative as the Slope of a Tangent: Secant to Tangent (Grade 11–12 · animation)
Riemann Sums and Integration: Area Under a Curve (Grade 11–12 · animation)
Limits and the ε–δ Definition: A Visual Guide (Grade 11–12 · animation)
3D Vectors: Sum, Dot Product and Cross Product (Grade 11–12 · animation)
Matrix Transformations: Rotation, Reflection, Shear and the Determinant (Grade 11–12 · animation)
Complex Numbers: Sum, Product, Powers and Roots on the Argand Plane (Grade 11–12 · animation)
Binary Number System: Place Value, Conversion and Addition (Grade 9–12 · animation)

Download the book

The class 7 mathematics textbook, in both versions.

The Bangla version and the English Version are different books — download the one matching your medium.

The habit that exposes a gap

When a problem defeats them, most students read the solution, feel they have understood, and move on — and that is where the gap stays, because "understood the solution" and "can do it" are different things. Instead, mark the problem and try it again three days later without the solution. If it defeats you a second time the gap is conceptual rather than practical, and you need to go back a chapter.