Maths that sticks.
Short lessons, questions that reshuffle every time, and a learning path that shows you what you need first. Grades 7 to 10.
Log in – Currently in closed beta – log in by invitation only.
What is Bayati?
Who is Bayati for?
For all of secondary school, grades 7 to 10. 38 chapters with 353 topics, in order from rational numbers to vectors, each building on the one before. Plus around 14,000 question templates. Each one rolls new numbers whenever you practise, which makes billions of unique questions.
What if I can’t remember something?
The learning path shows you what you need first. If something is missing, it takes you there first and then back to your topic.
Where does Bayati run?
On your phone, your tablet and in the browser. With an account you pick up where you left off on any device.
What does Bayati cost?
As a guest it’s free, with limits. With an account it’s free as well, with fewer limits. Premium costs €44.99 a year, that’s €3.75 a month.
Understand, practise, compete.
- Understand: Five-minute lessons, step by step.
- Practise: Questions that are never the same, and tests like in class.
- Duel: Against friends: who gets more right?
Want to master quadratic equations? Bayati shows you the way.
Bayati knows which topics come before every topic. You only learn what you’re really missing and always see where you are.
38 chapters, 353 topics.
- Grade 7 · Rational numbers
- Grade 7 · Terms and variables
- Grade 7 · Equations
- Grade 7 · Relations and proportionality
- Grade 7 · Percentages and interest
- Grade 7 · Angles and symmetry
- Grade 7 · Congruence and triangles
- Grade 7 · Data and chance
- Grade 8 · Terms and binomial formulas
- Grade 8 · Equations in depth
- Grade 8 · Linear functions
- Grade 8 · Systems of linear equations
- Grade 8 · Powers
- Grade 8 · Square and cube roots
- Grade 8 · Areas, circles and solids
- Grade 8 · Pythagorean theorem
- Grade 8 · Similarity and dilation
- Grade 8 · Probability in depth
- Grade 8 · Percentages and interest in depth
- Grade 9 · Real numbers
- Grade 9 · Powers and roots in depth
- Grade 9 · Quadratic functions
- Grade 9 · Quadratic equations
- Grade 9 · Power and root functions
- Grade 9 · Trigonometry
- Grade 9 · Similarity in depth
- Grade 9 · Solid geometry in depth
- Grade 9 · Exponential growth and decay
- Grade 9 · Probability and combinatorics
- Grade 10 · Exponential functions and logarithms
- Grade 10 · Polynomial functions
- Grade 10 · Trigonometric functions
- Grade 10 · Circle geometry
- Grade 10 · Introduction to calculus
- Grade 10 · Curve analysis
- Grade 10 · Growth models and modelling
- Grade 10 · Probability and statistics in depth
- Grade 10 · Vectors
Safe for kids.
- No ads and no tracking: Bayati shows no ads and passes no data to advertising companies.
- No chat, no contact with strangers: Duels have no chat, no free-text names and no profile pictures. Opponents only appear by nickname.
- Content based on the curriculum: The chapters follow what grades 7 to 10 cover in class (Berlin-Brandenburg framework curriculum).
What you want to know.
Does Bayati cost anything?
You start for free. As a guest and with an account you learn at no cost, with limits. Premium costs €44.99 a year.
Do I need an account?
No. You start as a guest and learn the first chapter. With an account you learn all chapters and continue on any device.
Which grades?
Grades 7 to 10, all of secondary school – from rational numbers to vectors.
Does it work on phones and in the browser?
Yes. Bayati runs on phones, tablets and in the browser. With an account you pick up wherever you left off.
How do I solve equations?
You change both sides in the same way until x stands alone. Whatever you do on the left, you also do on the right.
What is the absolute value of a number?
The absolute value is a number’s distance from zero on the number line. It is never negative: |−5| = 5.
How do I calculate percentages?
Percent means “out of a hundred”. You get the percentage value by multiplying the base value by the rate as a fraction: 25% of 60 is 25/100 · 60 = 15.