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Turn your Sapphire math video notes into a practice quiz

DeckOwl does not play or host videos. Paste your lesson notes, transcript or slides and get a math quiz with an explanation for every answer.

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How to make a math quiz from a Sapphire video

Watching a Sapphire math lesson feels clear in the moment, but recall fades fast. A math quiz with Sapphire video lessons works best when it follows the lesson by a short time, so you have to retrieve the method yourself.

Paste the transcript or your own notes from the lesson.
Mix multiple-choice and open questions to test both answers and method.
Retake the quiz after a day or two to strengthen recall.
Check each explanation to find the step you skipped.

Example algebra quiz questions from a math lesson

Solve for x: 2x + 6 = 14x = 4. Subtract 6 from both sides to get 2x = 8, then divide both sides by 2.

True or false: the derivative of sin(x) is cos(x).True. The slope of sin(x) at each point matches the value of cos(x), so the derivative is cos(x).

What is the slope of the line through (1, 3) and (4, 9)?2. Slope is (9 - 3) divided by (4 - 1), which equals 6 divided by 3.

Is the product of two odd integers always odd?Yes. Write each odd number as 2k + 1, and the product becomes 2(something) + 1, which is odd.

Why does dividing by 2/3 equal multiplying by 3/2?Dividing by 2/3 asks how many 2/3s fit into a quantity, and multiplying by 3/2 gives exactly that count.

Generate the full set

Three question types

Multiple-choice, true/false and open questions, so you can check both recall and reasoning.

Explanations for every answer

Each correct answer comes with a short reason, so you can see where a step went wrong.

Export on paid plans

PDF and DOCX export are on Plus. QTI 2.1 and Moodle XML export are on Pro.

How it works

Add your material

Upload a PDF, DOCX, PPTX or text file, or a photo of your notes. Paste a video transcript if that is what you have.

Choose question types

Pick multiple-choice, true/false or open questions for the lesson you just watched.

Study or export

Take the quiz in your browser on the free plan, or export it if you have a paid plan.

DeckOwl works from the files and text you give it, not from the video itself. Paste the transcript or your typed lecture notes, or upload slides and worksheets, and the quiz is built from that material.

Each generated question includes an explanation, which helps when a worked example is the part you missed. Review the explanations before you retake the quiz, since the reasoning is where most math mistakes happen.

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Frequently asked questions

How many questions should a math quiz after a video include?

Five to ten focused questions usually cover one lesson well. Mix easy and harder items so you can see exactly which step breaks down.

Should I retake a math quiz right after watching the video?

Try a short quiz right after the lesson, then another one a day or two later. Spacing out retrieval tends to improve long-term recall more than cramming the same questions.

Does DeckOwl play Sapphire videos or pull them in automatically?

No. DeckOwl works from files and text you provide, so paste the transcript or your lecture notes instead of linking the video.

Can I export the quiz to Moodle or QTI?

Yes, but only on the Pro plan at $14.99 per month, which includes QTI 2.1 and Moodle XML export. PDF, DOCX and Anki export are included in Plus.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.