A library of ready exercises.

Nearly 5,000 exercises in maths, physics and chemistry - each with a full step-by-step solution - that you paste onto the board, add to homework or send to a student. We grow the library every week.

Grab a ready-made exercise

14 days of full access, free, no card

A Lern whiteboard with two matura exercises on quadratic functions inserted from the task bank and a handwritten solution, with the Tasks panel open alongside

What you get in the task bank

Several subjects

Nearly 5,000 ready-made exercises in maths, physics and chemistry, with new ones - and new subjects - added every week. Pick a subject and you have material for a whole lesson, no digging through textbooks, no photocopies.

A ready step-by-step solution

Every exercise comes with a hint, a full solution, the answer and the formulas used. You can run the lesson on the fly, even if the student raised the topic five minutes ago.

Found in a matter of seconds

Filter by level, type, difficulty and length, or just type a phrase - we search both the content and the solutions. Lesson prep drops from half an hour to a minute.

Real CKE exam papers

Polish final exams at both levels and the eighth-grade exam from past years, labelled with year and session. Your student practises on exactly what awaits them.

Your own exercise library

Write your own exercises in the builder - any subject, multiple choice, true/false, gap fill, open questions - and they land in your private library next to the main bank. You use them in class and in homework just like the ready-made ones, with the student's answers checked automatically.

You know at once who it fits

Each exercise shows the formulas used and what it asks of the student - recall, application or analysis. You pitch the level right instead of guessing.

Straight into homework

From the exercise view you add it to a new or existing piece of homework. No copy-paste, no re-typing, no scanning.

How to find an exercise for your lesson in a minute

Pick a subject

You pick a subject

You go into "Tasks", click a subject tile and see the list with a counter and your favourites on top.

Filter

You filter what you're after

You narrow by level, type, difficulty and source, or simply type a phrase we search both in the content and in the answers.

Use

You use it in the lesson

You copy the exercise onto the board, add it to homework or send it to the student in chat - in the variant with or without the answer.

For the student

Your student keeps them

Mark an exercise you covered with one click and it goes to the student's panel under „Covered”. They come back to it before a test - with the full step-by-step solution.

Why us?

  • No flipping through three books

    Filter, click, done.

  • Looks like an exam, not a scan

    Clean formulas and proper typography.

  • Straight to the board

    Or into homework. No screenshots.

Who the problem bank is for

Three typical situations where tutors put this to work.

  • Matura prep

    Your student is preparing for the standard or advanced matura. Pick problems from real CKE papers, labelled by year and session, and practise exactly what will be on the exam.

  • The eighth-grade exam

    Your primary school student sits the exam this year. Reach for problems from past eighth-grade exams, each with a full step-by-step solution.

  • Your student asks about a topic five minutes before the lesson. Type a keyword, click a problem, and it's on the board right away, with a hint and a solution.

Instead of textbooks and scans

Here's how it usually goes without Lern.

Finding a problem
Without Lern: Flicking through three problem books.
With Lern: Filters and search, results in seconds.
During a lesson
Without Lern: A blurry photo of a book page.
With Lern: Formulas as clear as on the exam paper.
Solution
Without Lern: Working it out again to check the answer.
With Lern: A hint and a full solution with every problem.
Homework
Without Lern: Retyping the problem into a message.
With Lern: Add the problem to homework in one click.

The problem bank connects to everything else

Data flows between modules on its own, so you never retype anything.

Frequently asked questions

  • How many exercises are in the bank?

    Nearly 5,000, each with a full solution, a hint and an answer. We add more every week, including new subjects.

  • Are there exercises from CKE exam papers?

    Yes. Basic and extended matura papers and the eighth-grade exam from past years, labelled by year and session.

  • How do I put an exercise on the board?

    In one click. The exercise lands on the board with or without the answer, and the formulas are as clear as on the exam paper.

  • Can I add my own exercises?

    Yes. Write your own exercises in any subject in the editor and use them in lessons and homework just like the ready-made ones.

Explore the rest of lern.one.

Find a ready-made exercise for today's lesson.

Nearly 5,000 exercises with full solutions are waiting in the bank.

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