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Turn your own notes into a free practice quiz

Upload a PDF, slides, a text file or a photo of a page. DeckOwl writes multiple-choice, true/false and short answer questions, each with an explanation, so you can test yourself on what your class actually covers.

Create quizzes nowFree · No credit card required

Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free account · 3 sets a month · Creates quizzes in seconds

Why build a quiz from your own material

Writing questions from scratch can eat an evening, and much of that time goes to rereading notes you already have. A quicker route to a practice test is to learn how to make a free quiz from your own material, so the questions match what your teacher covers.

Start from notes, slides or a textbook chapter you already have
Mix multiple-choice, true/false and short answer questions in one quiz
Read the explanation after every answer, right or wrong
Retake the same material later to check what you remember

Example Pythagorean theorem quiz questions

In a right triangle with legs 3 and 4, what is the hypotenuse?5. The theorem gives a² + b² = c², so 9 + 16 = 25 and c = 5.

Which side of a right triangle is the hypotenuse?The side opposite the right angle, which is always the longest side. It is c in a² + b² = c².

True or false: the Pythagorean theorem applies to any triangle.False. It only applies to right triangles, where one angle is exactly 90 degrees.

A right triangle has legs 5 and 12. What is the hypotenuse?13. 5² + 12² = 25 + 144 = 169, and √169 = 13.

A 10 m ladder leans against a wall with its foot 6 m from the base. How high does it reach?8 m. 10² − 6² = 64, and √64 = 8, so the top sits 8 m up the wall.

Generate the full set

Three question types

Multiple-choice, true/false and short answer questions generated from your own material.

Explanations for every answer

Each question includes a short explanation, so a wrong answer teaches you the reason it was wrong.

Study in your browser

The free plan lets you take quizzes right in the browser with no download and no card required.

How it works

Upload your material

Add a PDF, DOCX, PPTX, text file or a photo of your notes. Photos are read with text recognition.

Pick your question types

Choose multiple-choice, true/false or short answer, then generate the quiz.

Answer and review

Work through the questions and read the explanations for anything you missed.

Free quizzes from a generic template often test topics you never studied. Starting from your own slides or chapter PDF keeps the questions relevant, and the explanations show you where a wrong answer went off track.

The free plan includes 3 generations a month and lets you study in the browser. Exporting to PDF or DOCX is part of the paid Plus plan.

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Frequently asked questions

How do I write good quiz questions about the Pythagorean theorem?

Ask about one idea per question, such as which side is the hypotenuse or what the theorem gives for given leg lengths. Include a few calculation questions and a few conceptual ones, like when the theorem does not apply.

How often should I quiz myself on the Pythagorean theorem?

Short quizzes spread over several days work better than one long session. Retest the questions you missed after a day or two, then again a week later.

Can I export my free quiz to PDF?

Not on the free plan, which lets you study in the browser only. PDF and DOCX export are included with Plus at $99.90/year or $9.99/month.

Do I need a credit card to start?

No. You can start on the free plan without a credit card, and students with a school email get 40% off Plus.

Generate free quizzes

Keep exploring the topic

Review the main ideas visually or practice recalling them.