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Turn math video notes and slides into flashcards with AI

DeckOwl doesn't host videos, but it turns the lecture notes, slides and worksheet photos you already have into math flashcards you can review with spaced repetition.

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

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

How to make math flashcards from a lesson you watched

Many students look for math flashcards for video lessons because they want to review ideas they already watched without rewinding the whole lecture. DeckOwl can't pull cards from a video link, but the notes, slides and handouts from that same class are usually enough to build a strong deck.

Upload PDFs, PPTX slides, DOCX files, notes or photos of pages
Cards are written from your material, so they match your course
Spaced repetition schedules reviews for the cards you miss
Export to Anki or CSV on the Plus plan

Example algebra and geometry flashcards for math review

What is the quadratic formula?x = (−b ± √(b² − 4ac)) / 2a, used to solve ax² + bx + c = 0 when factoring is hard or impossible.

What is the slope-intercept form of a line?y = mx + b, where m is the slope and b is the y-intercept.

What does the Pythagorean theorem state?In a right triangle, a² + b² = c², where c is the hypotenuse opposite the right angle.

What is the sum of the interior angles of a triangle?180 degrees, which holds for every triangle in Euclidean geometry.

What is the derivative of sin(x)?cos(x), because the rate of change of sine at each point matches the cosine value there.

Generate the full set

Works from your own material

Upload PDFs, PPTX slides, DOCX files, typed notes or a photo of a page, and get cards built from what you actually studied.

Spaced repetition built in

Cards come back at the intervals where you are most likely to forget them, so formulas stick past the exam.

Quizzes and mind maps too

Check yourself with multiple choice, true/false or short answer questions that include explanations, or map how the topics connect.

How it works

Upload your math material

Add a PDF, slide deck, notes file or a photo of your textbook or whiteboard.

Generate your flashcards

DeckOwl reads the text and writes question-and-answer cards from the key definitions, formulas and worked examples.

Study and review daily

Work through the deck in your browser, and let spaced repetition schedule the cards you find hardest.

Good math cards usually have one idea per side: a theorem on the front and its statement on the back, or a worked step on one side and the reason for it on the other. Review them in short sessions across several days, since spaced repetition works better than one long cram before a test.

Free accounts get 3 generations per month and can study in the browser. Plus adds unlimited generations and PDF, DOCX, Anki and CSV export, so you can take your math deck anywhere.

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Frequently asked questions

How many flashcards should I make for a math unit?

Aim for one card per definition, theorem, formula or solution step, which often means 20 to 60 cards for a single unit. Cut any card you can answer without thinking so your reviews stay focused on the hard ones.

How do I study math formulas with flashcards?

Put the formula's name or purpose on the front and the formula with a short note on when to use it on the back. Practice writing the answer out by hand before you check it, since math recall depends on working the steps.

Can DeckOwl make flashcards directly from a math video?

No, DeckOwl works from files and images rather than video links. Upload the lecture slides, notes or a photo of the board instead, and it will generate the cards from that material.

Can I export my math flashcards?

Exports to PDF, DOCX, Anki and CSV are part of the Plus plan at $99.90 per year or $9.99 per month. The free plan lets you study the cards in your browser with 3 generations per month.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.