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Turn your own course notes into quizzes with explained answers

DeckOwl does not pull answers from Canvas or any course site. Upload your PDFs, slides or notes and get multiple-choice, true/false or short-answer questions with explanations you can study from.

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 generated practice beats copied answers

A canvas quiz answers extension promises a shortcut, but the answers belong to someone else's course and rarely explain why they are right. DeckOwl takes the material you already have, such as lecture PDFs, DOCX handouts, PPTX slides or photos of notes, and writes questions with explanations. You learn the reasoning, which is what exams test.

Questions come only from files you upload
Explanations that show why an answer is right
Free plan includes 3 generations per month and browser study
Spaced repetition for the questions you keep missing

Example college biology practice questions

Which organelle produces most of a eukaryotic cell's ATP?The mitochondrion. Oxidative phosphorylation in its inner membrane yields far more ATP than glycolysis alone.

True or false: DNA replication is semiconservative.True. Each new double helix keeps one original strand and one newly synthesized strand, as Meselson and Stahl showed.

What happens to apparent Km in the presence of a competitive inhibitor?It increases while Vmax stays the same, because extra substrate can outcompete the inhibitor at the active site.

Which way does water move by osmosis across a membrane?Toward the side with more solute, because that side has less free water and water moves down its own concentration gradient.

What are the main products of the light-dependent reactions?ATP and NADPH, with oxygen released from splitting water. The Calvin cycle then uses ATP and NADPH to fix carbon dioxide.

Generate the full set

Built from your files

Upload PDFs, DOCX files, PPTX slides, plain-text notes or photos of pages. Text in images is read with text recognition.

Explanations included

Multiple-choice, true/false and short-answer questions each come with an explanation of the correct response.

Study tools in one place

Turn the same material into flashcards with spaced repetition or a mind map when you need the big picture.

How it works

Upload your material

Add a PDF, slide deck, document or photo of your notes.

Pick a quiz format

Choose multiple-choice, true/false or short answer for the topic you are studying.

Answer, then review

Check each explanation and redo the questions you missed.

Start by uploading the readings or slides from the unit you are studying. Answer each question before reading its explanation, since working it out first is what makes the material stick. Then review every miss and move it into flashcards to repeat later.

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Practice questions from your own notes for Canvas quizzes, each with an explanation for the answer.

Canvas quiz practice from notes

Practice questions from your own notes, with explanations, before your next Canvas quiz.

Practice quizzes for Canvas courses

Not a Canvas blocker, but builds practice quizzes from your own notes and slides.

Frequently asked questions

Can DeckOwl show the answers to a Canvas quiz?

No. DeckOwl works only from files you upload, such as your own notes, slides or PDFs. It creates new practice questions from that material rather than pulling answers from a course site.

How do I study biology from my own lecture slides?

Upload the slides, answer the quiz without looking at notes, and read each explanation carefully. Redo the missed questions a day later, since spacing your review improves recall.

Can I export my quiz to Moodle or another learning system?

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

Is there a free plan?

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

Generate free quizzes

Keep exploring the topic

Review the main ideas visually or practice recalling them.