Concept over exam
Why does this idea exist? What question was it invented to answer? Intuition comes first — formula second, exam trick last.
Free · Open · Concept-first
What your textbook skipped .
ClassMine101 mines the ideas that lectures rush past — why concepts exist, what they really mean, how they connect. Mathematics built concept-first: high-school foundations that actually hold, up through college.
- No login
- No ads
- Free forever
- Donation-funded
Why ClassMine101
Built on principles textbooks forgot.
Most resources teach you to pass. Ours exist so that years later, the idea still makes sense when you meet it again.
Diagram before symbol
Visual proofs and plain-English narrative carry the meaning. KaTeX notation appears once you can already see what it describes.
Free forever
Funded by voluntary donations — never paywalls. No login, no ads, no locked chapters, ever.
Start here · Mathematics
The map we're mining first.
Five chapters open the mine — each one rebuilds a subject you thought you knew, from its true foundations upward. Click any chapter to see what's coming.
Foundations Coming soon
Sets & Logic
The hidden language every higher course assumes you already speak.
Foundations Coming soon
Functions & Graphs
Not equations to solve — machines that transform, seen before solved.
Foundations Coming soon
Trigonometry
Circles, not triangles. Sine is a shape of motion, not a ratio to memorize.
Foundations Coming soon
Geometry
Proofs you can see before symbols you compute.
Bridge & Beyond Coming soon
Calculus
Zoom into change until limits feel inevitable.
Later expansions bring Physics, Computer Science and Economics onto the same concept-first rails.
Roadmap
One tier at a time, mined thoroughly.
New chapters ship continuously until each tier is complete — quality gates beat dates.
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High-school foundations In progress
Sets & logic, functions, trigonometry, geometry — rebuilt from intuition so nothing later stands on sand.
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Bridge to college Planned
Precalculus threads, proof techniques, and the visual habits that make calculus feel inevitable.
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College depth Planned
Linear algebra, real analysis, probability — same promise: why before what, always.
Keep ClassMine free.
Everything here stays free — no paywalls, no ads, no login. Running costs are just a domain name and AI tooling, covered entirely by voluntary donations from people who found it useful.
Support the project ♡ donation link ships with content launch · giving is optional, learning never is