Real math, one short lesson a day.
A path from mental arithmetic to quadratic equations, with a streak to build consistency, review at the right moment and every question solved step by step.
Math Mental in facts
- 24 units and 356 lessons published, organized as a path, with 78 question types.
- Free and ad-free: no lesson is paid. The project is kept running by voluntary support and optional extras, without selling data.
- Available in Portuguese, English, Spanish and Simplified Chinese.
- Runs in the browser on phones and computers, nothing to install.
How Math Mental teaches
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Path
Units in sequence, each with lessons of a few minutes. You move on once you master the previous step.
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Streak
Every day with at least one completed lesson adds to your streak. Consistency beats cramming.
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Review
What you got wrong comes back in practice and review sessions until it becomes automatic.
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Step by step
Every question has a detailed solution, written in the same notation used in class.
From mental math to algebra, with rigor
Arithmetic, fractions, decimals, financial math, proportion, equations, functions and statistics are already on the path, and new units arrive every week.
Arithmetic and mental math
Fractions, decimals and finance
Elementary algebra
Functions and polynomials
Statistics
Who studies with Math Mental
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Ten minutes before class and fractions stopped blocking my equations.
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I use the compound interest units to review before finance exams.
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The step-by-step solution shows exactly where the sign flipped.
Illustrative testimonials while we collect real student feedback.
Your first lesson takes five minutes
Create an account, pick where to start and keep your streak from today.