Photograph one problem. Practise ten more like it.

Lexie reads a math problem from your textbook, worksheet, or handwritten notes and generates novel practice problems based on the same concept. Different numbers, same method. The only way to learn maths is to do maths.

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How math mode works

Photograph a problem

Take a photo of a worked example, a textbook problem, or something from your worksheet. Lexie identifies the mathematical concept, the method, and the level of difficulty.

Get novel problems, not copies

Lexie doesn't repeat the same problem with different numbers pasted in. It generates genuinely new problems that require the same mathematical reasoning but with different values, different contexts, and different entry points. If you can solve these, you understand the method — not just the specific example you saw.

Quick-fire drills

For building speed and fluency. A stream of problems at a consistent difficulty level. Solve, check, next. Designed for younger students or for practising fundamentals where speed matters — arithmetic, basic algebra, unit conversions.

Guided solving

For deeper understanding. Lexie walks you through the problem step by step using a Socratic approach. Instead of showing you the solution, it asks questions that guide you toward the next step. If you get stuck, the hints get more specific. You arrive at the answer through your own reasoning.

Handwritten answers accepted

You don't need to type mathematical notation. Solve the problem on paper and photograph your handwritten work. Lexie reads your solution and evaluates whether your method and answer are correct. This removes the biggest friction point in digital maths practice — nobody wants to wrestle with equation editors when they're trying to learn.

Why novel problems matter

Pattern matching is not understanding

Students often think they understand a concept because they can follow a worked example. Then the exam changes one variable and they're lost. Practising with novel problems that vary the surface features while preserving the underlying method is how you build genuine mathematical fluency.

Repetition with variation

Cognitive science distinguishes between blocked practice (doing the same type of problem repeatedly) and interleaved practice (mixing problem types). Lexie's math mode gives you controlled variation within a concept — enough repetition to build the method, enough variation to prevent mechanical pattern matching.

Your textbook has five problems. You need fifty.

Most textbooks provide a handful of practice problems per concept. If you get them all right, you move on without knowing whether you truly understood or just got lucky. If you get them wrong, you've exhausted your practice material. Lexie generates as many problems as you need from a single seed example.

Works across maths

Arithmetic

Generate drill problems for multiplication, division, fractions, decimals, and percentages at any level of difficulty.

Algebra

Photograph a linear equation, quadratic, or system of equations and get novel problems that test the same solving method with different coefficients and constants.

Geometry

Area, volume, angles, proofs. Photograph a problem involving a specific shape or theorem and get variations that test the same geometric reasoning.

Word problems

Lexie generates new word problems that require the same mathematical setup as your seed problem but with different scenarios and values.

Frequently asked questions

How does Lexie generate maths problems?

Photograph a problem from your textbook, worksheet, or notes. Lexie identifies the mathematical concept and difficulty level, then generates novel problems that require the same method but with different values and contexts. You get unlimited practice from a single example.

Can I write my answers on paper?

Yes. Solve the problem by hand and photograph your written solution. Lexie reads your handwriting and evaluates your method and answer. No equation editors, no typing mathematical notation.

What's the difference between quick-fire drills and guided solving?

Quick-fire drills are for building speed and fluency — solve, check, next. Guided solving is a Socratic mode where Lexie asks questions that lead you toward the solution step by step, with increasingly specific hints if you get stuck. Quick-fire for fundamentals, guided for new or challenging concepts.

What level of maths does Lexie support?

Lexie generates practice problems from whatever you photograph, so the level is determined by your material. Primary school arithmetic through secondary school algebra and geometry. The system works best with problems that have clear methods and definable answer types.

Is this a maths solver?

No. Lexie is the opposite of a solver. It doesn't give you answers — it gives you more problems. If you want something to do your homework, this isn't it. If you want to actually learn the method so you can solve problems yourself, that's what Lexie is for.

You don't learn maths by watching someone else solve problems

Photograph a problem, get novel practice, solve it yourself. Quick-fire drills for fluency, guided solving for understanding. 3 free study sets. No account required.