Pass your math course.
Understand it this time.
Interactive lessons for calculus, linear algebra and probability: you drag the graph first, then the formula makes sense. Tell us your course and your exam, get a plan, start free.
What are you studying?
2-minute quiz · first unit free · no card
How it works
- 01Tell us your course and exam
A two-minute quiz. We match lessons to your course and your deadline.
- 02Touch the idea before the formula
241 lessons of about 8 minutes: drag, predict, then see why it works.
- 03Follow your plan to the exam
A few minutes a day, a streak to keep, practice where you are weakest. Unit 1 is free.
Try it right here
The big idea of calculus in one move: pull Q toward P and watch the slope settle on the derivative.
- gap h
- 2.40
- secant slope Δy/Δx
- −0.55
Eight courses, first and second year
The university courses follow the topics of MIT's open courses (18.01, 18.02, 18.03, 18.05, 18.06). We are not affiliated with MIT.
- Calculus 1 & 2College · Year 111 units · 77 lessons
- Linear AlgebraCollege · Year 16 units · 30 lessons
- Multivariable CalculusCollege · Year 16 units · 25 lessons
- Probability & StatisticsCollege · Year 26 units · 24 lessons
- Differential EquationsCollege · Year 25 units · 25 lessons
- Linear Algebra for MLCollege · Intro5 units · 26 lessons
- Intro to ProofsCollege · Year 15 units · 17 lessons
- Complex AnalysisCollege · Year 24 units · 17 lessons
Start free. Pay when you want the rest.
The first unit of your course is free, no card. The first 500 people who pay get every course for life, for $5 once.
- Lifetime$5 onceevery course and every new lesson, pay onceOnly the first 500 buyers
- Monthly$11.99 per monthevery course, cancel any time
Questions
What is free?
The whole first unit of the course you pick: every lesson and problem in it, no card, no time limit.
How do the lessons work?
Each lesson is a short interactive page, about 8 minutes. You move a graph or make a guess first, then see why it works and write it down. A few problems at the end check that it stuck.
What language are the lessons in?
Honest answer: most lessons are in Russian right now, and we are translating them into English course by course. The site, the quiz and the first calculus lesson are already in English.
What does lifetime mean?
One payment of $5 opens every course and every lesson we add later, for as long as Slux runs. No renewal, nothing to cancel. Only the first 500 people who pay get it; after that, Slux is monthly only.
Can I cancel?
Monthly, any time from your profile; you keep access until the paid period ends. Lifetime has nothing to cancel. Either way, your first payment has a 14-day money-back.
Is it for high school?
No. Slux is built for college math and for learners 18 and older.
Two minutes.
Then your plan to the exam.