PASS 01 — READ
Plain explanation
No padding, no throat-clearing. The idea, the formula, and the one mistake everybody makes with it.
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Learn the hard
parts properly.
A lesson library where every concept comes with a graph you can actually move and a quiz that tells you why you were wrong — built for Punjab Board, Cambridge O Level, IGCSE and A Level.
Exam boards4
SubjectsPhy · Chem · Maths · CS
Lesson topics210
Quiz questions1558
Interactive graphs168
Your levelLVL 1
exam boards
Find your syllabus.
Punjab Board, Cambridge, or neither. The chapters follow the book you actually study from.
PCTB
Punjab Board
Physics · Chemistry · Biology · Mathematics · Computer Science
Matric & Intermediateopen →
Cambridge
O Level
Physics · Chemistry · Mathematics · Computer Science
4 subjectsopen →
Cambridge
IGCSE
Physics 0625 · Chemistry 0620 · Maths 0580 · CS 0478
4 subjectsopen →
Cambridge
A Level
Physics · Chemistry · Mathematics · Computer Science
4 subjectsopen →
Course
Linear Algebra
Vectors, matrices and linear transformations, with movable diagrams
12 lessonsopen →
Course
CS Fundamentals
How computers really work, from bits up to the operating system
16 lessonsopen →
Course
Data Structures & Algorithms
The core structures and algorithms, with the reasoning behind each
8 lessonsopen →
Course
Networking
How data moves across the internet, layer by layer
8 lessonsopen →
Explore
Play with it
Interactive graphs you can drag — the fun way in
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how a lesson runs
Three passes over the same idea.
Reading it once is not learning it. Every topic makes you meet the concept three times, in three different modes.
PASS 02 — MOVE
Drag the graph
Pull a slider and watch the maths respond in real time. Seeing a secant collapse onto a tangent beats reading about it.
PASS 03 — TEST
Answer, then find out why
Every question explains its answer — including why the tempting wrong option is wrong. Scores are plotted as a scope trace.
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