World-class math education, for everyone
Marcus makes high-quality math instruction fun and accessible — from elementary arithmetic to college-level linear algebra.
Start Learning →Everything you need to learn math
From structured courses to a freeform canvas, Marcus meets you where you are.
Courses for Every Level
Structured lessons from Grade 5 through Linear Algebra, each with clear concepts and guided practice.
Draw Your Thinking
Sketch problems on a canvas and get real-time feedback — the way math is meant to be done.
A Tutor, Not a Calculator
Marcus guides you step-by-step with patient explanations. When you’re stuck, it offers a hint — not the answer. When you’re wrong, it says ‘not quite’ and shows exactly where to try again.
Beautiful Math
Crisp LaTeX rendering and handwritten-style equations that make math feel natural.
Backpropagation — Chain Rule
Four ways to learn
Whether you want structure, guidance, exploration, or a challenge — Marcus adapts to how you learn best.
Courses
Follow structured lessons from Grade 5 through Linear Algebra. Each course builds understanding with clear concepts and guided practice.
Tutor Mode
Write your work on the canvas. Marcus watches, coaches, and grades — like a real tutor sitting beside you.
Learn Mode
Watch solutions unfold step-by-step with beautiful animations. Go at your own pace or let autoplay guide you.
Practice Mode
Test your understanding. Solve each step yourself before seeing the answer — building real skill.
Curious about something? Just highlight it.
Select any text in a lesson and Marcus explains it instantly — no context switching, no tab juggling.
An eigenvector of a square matrix A is a non-zero vector v such that multiplication by A only changes the scale of v.
Formally, we write Av = λv, where λ (lambda) is the eigenvalue — a scalar that tells you how much the eigenvector is stretched or compressed. If λ = 2, the vector doubles in length; if λ = −1, it flips direction.
A tutor that learns how you learn
Marcus tracks your strengths, spots your struggles, and adapts every interaction — so you always get the right level of challenge and support.
Knows what you need to practice
Marcus tracks mastery of every skill and builds a profile of your strengths, weak spots, and common mistakes. Every problem, hint, and explanation is personalized — not one-size-fits-all.
Never lets you get stuck
When you’re struggling, Marcus offers three levels of help: a nudge toward the next step, a quick concept recap, or an easier warm-up problem. And it never says ‘wrong’ — it says ‘not quite, let’s look at this part again.’
Builds learning that lasts
Skills must reach real mastery before moving on — no skipping ahead. Daily review questions resurface older material at the right time, so you actually retain what you’ve learned.
Inspired by the best math instructors
The best teachers don't give answers — they walk beside you, ask the right questions, and build intuition. We built Marcus to bring that experience to everyone, using AI to augment your thinking — not replace it.
Guide, don't solve
Great instructors resist giving answers. They ask 'what would happen if...?' and let understanding emerge. Marcus does the same.
Show every step
The best explanations never skip steps. Marcus breaks every problem into clear, digestible pieces — like a patient teacher at a whiteboard.
Meet you where you are
No two learners are the same. Marcus tracks mastery of each skill you practice — it knows what you’ve mastered, where you struggle, and what to review next, adapting in real time.
AI that enhances, not replaces
Marcus uses AI the way it should be used in education — to amplify your thinking, catch misconceptions, and build deeper understanding.
How it works
Start learning in three simple steps.
Choose a course or ask any question
Pick from structured courses like Grade 5 Math or Linear Algebra, or just type a question.
Learn through clear explanations
Work through concepts with step-by-step breakdowns, then practice with guided problems.
Build real understanding
Track your progress across every skill. Daily review questions prevent forgetting, and mastery-based progression ensures real understanding before moving on.