Courses
Video series
Full course playlists from the channel, organised into ordered series so you always know what comes next. Your place is remembered as you go.
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STEMLinePK · signal acquired
Learn the hard
parts properly.
Video course series from the channel, plus a lesson library where every concept comes with a graph you can actually move and a quiz that tells you why you were wrong.
ChannelSTEMLinePK
Course series—
Videos indexed—
Lesson topics—
Quiz questions—
Interactive graphs—
Your level—
two ways in
Watch it, or work through it.
Learn
Interactive lessons
Short written explanations, live graphs you can drag, and a quiz on every topic. Built for when a video is not enough and you need to poke at the idea.
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Open
exam boards
Find your syllabus.
Punjab Board, Cambridge, or neither. The chapters follow the book you actually study from.
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 01 — READ
Plain explanation
No padding, no throat-clearing. The idea, the formula, and the one mistake everybody makes with it.
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.
Nothing to sign up for.
Progress is stored on your own device. No account, no email, no tracking. Clear your browser data and it resets — that is the whole system.
Pick a topic