To turn a study guide into a video you can rewatch, answer every item on the guide in full sentences first, then make each item one short chapter that keeps the guide's own numbering, so item 7 on paper is chapter 7 in the video. Write each chapter to stand alone: name the term again, give the answer, give one example, and stop. That is what makes a video rewatchable, because you can jump to the one item you keep forgetting and get the whole answer in 30 to 60 seconds. Paste the answered guide into a tool like openCanviz, set the length, check every number on screen, and update single scenes when the guide changes.

A study guide is a question list, not a summary

Teachers hand out study guides in two shapes. One is a list of terms ("define sensitivity, specificity, lead-time bias"). The other is a list of questions ("at what age does colorectal screening start for average-risk adults"). Either way, it is a list of what you will be asked, with the answers left blank.

That is the most important fact about turning one into a video. If you paste the blank guide in, you get a video that reads the questions aloud and guesses at the answers. The answers are the work, and they have to come from your course: your lecture notes, your textbook, and whatever guideline your teacher told you to use. Fill in the guide first, on paper or in a document. Then make the video.

If your source is your own notes rather than a teacher's guide, how to make an exam revision video from your own notes covers building the question list yourself from the specification.

What makes a video rewatchable

Most revision videos get watched once. The ones that get watched five times share a few properties, and you can build all of them in on purpose.

The "stands alone" rule feels repetitive while you write it. Saying "sensitivity" again at the start of the chapter on false negatives seems redundant when the previous chapter defined it. But you will not watch the previous chapter. You will tap chapter 9 on the bus because it is the one you got wrong in the practice quiz, and chapter 9 has to make sense on its own.

Worked example: a cancer screening review guide

This is the kind of guide given in nursing, public health and preventive medicine courses. It has two halves: the concepts behind screening, and the specific recommendations.

The concept items, answered

Item 1. Sensitivity. The proportion of people who have the disease that the test correctly flags as positive. A highly sensitive test misses few cases.

Item 2. Specificity. The proportion of people without the disease that the test correctly calls negative. A highly specific test raises few false alarms.

Item 3. Positive predictive value. Of everyone who tests positive, the proportion who actually have the disease. Unlike sensitivity and specificity, it depends on how common the disease is.

Item 4. Worked calculation. Screen 10,000 people for a disease with 1% prevalence, using a test with 90% sensitivity and 95% specificity. 100 people have the disease, and the test catches 90 of them. 9,900 do not, and 5% of them, 495 people, test positive anyway. So 585 people test positive and only 90 are sick. The positive predictive value is 90 divided by 585, about 15%. Most positives are false.

This item is worth spending a scene on, because it is the most commonly examined calculation in screening and the number surprises people. On screen it is a grid of 10,000 dots with 100 shaded; the narration says every number aloud so it still works with the screen off.

Item 5. Lead-time bias. Screening finds a disease earlier, so survival measured from diagnosis looks longer even if the patient dies at the same age. The clock started earlier; the death did not move.

Item 6. Length-time bias. Slow-growing tumours spend longer in the detectable stage, so screening finds more of them. Screen-detected cancers look less aggressive partly because screening preferentially catches the slow ones.

Item 7. Overdiagnosis. Finding a cancer that would never have caused symptoms in the person's lifetime. It is the main harm that the first two biases hide.

The recommendation items

These come from the US Preventive Services Task Force (USPSTF) in many US courses; other countries use their own programmes, so answer from whichever your teacher named.

Guidelines change. The breast recommendation moved its starting age to 40 in 2024, and the Task Force has been updating its cervical guidance, including self-collected HPV samples. This is exactly where the "easy to fix" property earns its keep: when your teacher says the answer to item 10 changed, you rebuild one scene, not the video.

A chapter script for item 11, written to stand alone:

Item 11. Lung cancer screening. The test is a low-dose CT scan, once a year. Who gets it: adults aged 50 to 80 with at least a 20 pack-year smoking history, who still smoke or quit within the last 15 years. A pack-year is one pack a day for one year, so 20 pack-years could be one pack a day for 20 years, or two packs a day for 10.

That is 70 words, under 30 seconds, and it answers the question without needing chapter 10.

Turning each kind of item into a scene

Study guides mix item types. Each has a scene shape that works.

• Define a term: the term written large, then a small drawing of what it counts. For sensitivity, a group of sick people with most of them ticked.
• Calculate: the numbers built up one at a time in the order you would write them in the exam, ending on the answer circled.
• List: no more than four items drawn. If the guide wants seven, split it into two chapters.
• Compare: two columns drawn side by side, same rows in both. Lead-time and length-time bias suit this well.
• Apply to a case: a short patient description, then the decision. "A 52 year old who smoked a pack a day for 30 years and quit 10 years ago: eligible."

For harder mechanisms, how to study for a medical licensing exam visually covers drawing cause and effect chains, which suits pathology better than guideline items do.

Make it

1. 1

   Answer every item first

   Fill in the study guide in full sentences from your notes, textbook and the guideline your teacher named. Leave nothing for the tool to guess. Mark any item you are unsure of and ask before you build.

2. 2

   Rewrite each answer to stand alone

   Start each one with the item number and the term. Cut any line that refers to another item. Say every number in words the narrator can read aloud. Keep each to 75 to 150 words.

3. 3

   Paste it in and keep your wording

   In openCanviz, choose Keep my wording so the narration is your checked answer, set the target length to roughly one minute per item, and pick whiteboard or doodle on paper style.

4. 4

   Check the chapter list against the guide

   Chapter titles should match the guide's numbering and terms. Rename any that drifted, so you can find item 9 in two seconds.

5. 5

   Check every number on screen

   Pause on each calculation and recommendation scene. Drafted drawings can show a wrong age or a misplaced label. Fix those scenes, because you will remember the picture.

6. 6

   Rebuild single scenes when facts change

   When a guideline is updated or your teacher corrects an answer, edit that one scene's narration and drawing. Leave the rest of the video alone.

Common questions

Can I just paste the blank study guide? You can, and you will get a video that guesses. For anything examined, that is a bad trade. Answering the guide yourself is also the part of the exercise that does most of the learning.

How long should the whole video be? Roughly one minute per item. A 15 item guide becomes a 12 to 15 minute video. If it runs past 20 minutes, split it into two halves along the guide's own sections.

Will I actually rewatch it? More often than you will reread the guide, because a single chapter takes less than a minute. Use it the way studying from video instead of rereading notes describes: pause on the item number, say the answer, then play to check.

What if my class shares one study guide? One person can build it and share the link, but everyone should still answer the guide themselves first. The free tier adds a watermark, which does not matter for a revision video passed around a study group.