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Turn your notes into a free online quiz in minutes

Upload a PDF, slides or notes and get practice questions with explanations for every answer. DeckOwl makes quizzes you take alone in the browser, not a live multiplayer game with a shared lobby.

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 · First set needs no signup · Creates quizzes in seconds

Why a quiz built on your own notes works better than a generic one

Students and teachers who already have lecture slides or a textbook chapter often want a free online quiz creator that works from that exact material instead of generic questions. DeckOwl reads PDF, DOCX, PPTX, plain text and photos of pages, then writes questions with an explanation for each answer.

Questions match your own course reading, not a generic question bank.
Explanations appear with each answer, so wrong answers become lessons.
The free plan includes 3 generations per month and studying in the browser.
Exports to PDF, DOCX, Anki and CSV are on Plus, and QTI 2.1 and Moodle XML are on Pro.

Example Pythagorean theorem quiz questions

In a right triangle with legs 3 and 4, what is the hypotenuse?5. Since 3² + 4² = 9 + 16 = 25, the hypotenuse is √25 = 5.

True or false: the Pythagorean theorem applies to any triangle.False. It only holds for right triangles, where a² + b² = c² and c is opposite the right angle.

A 5 m ladder leans against a wall with its base 3 m from the wall. How high does it reach?4 m. The height is √(5² − 3²) = √16 = 4, because the ladder is the hypotenuse.

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

Is a triangle with sides 6, 8 and 10 a right triangle?Yes. 6² + 8² = 36 + 64 = 100 = 10², so the converse of the Pythagorean theorem holds.

Generate the full set

Built from your material

Upload a PDF, DOCX, PPTX, plain text file or a photo of a page, and the questions come from that content.

Three question types

Multiple choice, true/false and short answer, each with an explanation for the correct response.

Flashcards and mind maps too

The same material can also become spaced-repetition flashcards or a mind map when a quiz is not the right format.

How it works

Upload your notes

Add a PDF, slides, a DOCX file, plain text or a photo of a page.

Choose a question type

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

Review and study

Answer in the browser and read the explanations for anything you missed.

It is a study tool rather than a live game, so there is no shared lobby or countdown like a Kahoot-style session. Quizzes are taken alone at your own pace, which suits review before an exam, and the explanations show why an answer is right, not just which letter to pick.

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Turn notes or slides into practice quizzes with explanations, free to start.

Free Kahoot-Style Quiz Maker

Turn your own notes into a free quiz with explanations. Browser study on the free plan.

Frequently asked questions

How many questions should a Pythagorean theorem quiz have?

Ten to fifteen questions is a good range for one lecture or section, mixing a few calculation problems with conceptual true/false items. Focus on the ones you missed on the next attempt rather than retaking the whole set.

What should a Pythagorean theorem practice quiz cover?

Include finding a missing side, identifying the hypotenuse, deciding whether a triangle is right using side lengths, and word problems such as ladders or distances. Include short-answer items that ask why the formula only applies to right triangles.

Is there a free plan?

Yes, the free plan gives you 3 generations per month and lets you study in the browser. Exports are not included on the free plan.

Which exports are included in paid plans?

Plus costs $39/year or $7.99/month and includes unlimited generations with PDF, DOCX, Anki and CSV export. Pro costs $14.99/month and adds QTI 2.1 and Moodle XML export.

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