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Turn your notes into a quiz with a Gemini-style quiz maker

Upload a PDF, slide deck, text file or photo of a page. DeckOwl writes multiple-choice, true/false and open questions with explanations, so you can check what you actually learned.

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 custom quiz beats a generic one

Teachers and students often want a Gemini quiz maker because a quiz built from their own lecture slides tests the exact material they will be graded on. Generic practice sets rarely match a specific chapter, so the questions drift away from what the course emphasizes.

Questions come from your own PDF, slides or notes, not a fixed question bank.
Every item includes an explanation so wrong answers teach something.
Multiple-choice, true/false and short open questions cover recall and reasoning.
Students with a school email get 40% off Plus or Pro.

Example Gemini constellation quiz questions (astronomy)

Which two bright stars mark the heads of the Gemini twins?Castor and Pollux. They are the two brightest stars in the constellation, named after the mythical twins.

Which meteor shower appears to radiate from the constellation Gemini?The Geminids, which peak in mid-December. The shower is named after the constellation where its meteors seem to originate.

What is the approximate date range for the Gemini zodiac sign?Roughly May 21 to June 20 in the Western tropical zodiac. The sign is defined by the Sun's position in the calendar, not the stars.

When is the Gemini constellation high in the evening sky for Northern Hemisphere observers?On winter evenings. It is high overhead then, which makes it easy to find for observers in the north.

What is the parent body of the Geminids meteor shower?The asteroid 3200 Phaethon. Its unusual orbit links it to the shower, which is why scientists treat it as a rocky source rather than a comet.

Generate the full set

Three question types

Get multiple-choice, true/false and open questions from the same material, each with an explanation for the answer.

Reads your files

Upload PDF, DOCX, PPTX, plain text or a photo of a page, and text recognition pulls the content out for you.

Export when you need it

Save quizzes as PDF or DOCX on Plus, or export QTI 2.1 and Moodle XML on Pro for your class platform.

How it works

Add your material

Upload the lecture slides, reading or notes you need to study.

Choose question types

Pick multiple-choice, true/false or open questions, then generate the quiz.

Answer and review

Take the quiz in your browser and read the explanation after each question.

DeckOwl builds each quiz from the file you upload, so the questions follow your notes and the explanations point back to the source. Free accounts get 3 generations a month with no credit card needed, and Plus removes the limit.

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Frequently asked questions

How do I study the Gemini constellation effectively?

Start by locating the two bright twin stars, Castor and Pollux, then learn the meteor shower and seasonal visibility. Spread short quizzes over several days so the facts stick.

What is a good way to memorize zodiac sign dates?

Memorize the sign order first, then attach one or two dates to each sign rather than the full calendar. Quiz yourself with true/false questions to catch dates you mix up.

Can I start for free?

Yes. The free plan includes 3 generations per month and studying in the browser, and no credit card is needed to start.

Can I export my quizzes?

Exports are paid features. Plus includes PDF, DOCX, Anki and CSV export, and Pro adds QTI 2.1 and Moodle XML.

Generate free quizzes

Keep exploring the topic

Review the main ideas visually or practice recalling them.