Do explainer videos actually help you learn?
Yes, explainer videos can help you learn, but only when the video is built well and you do something with it afterwards. Good videos pair spoken words with matching pictures, keep each chapter short and cut decorative clutter. Watching alone often feels like learning without being it, so test yourself after the video with questions, flashcards or by explaining it back.
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In more detail
Words and pictures together beat words alone. Psychologists call this dual coding: you store the explanation as language and as an image, so you have two ways back to it. Richard Mayer's research on multimedia learning turned this into design rules. Your working memory holds only a few things at once, so a good video keeps the load low: short segments with one idea each (segmenting), arrows and highlights on what matters (signaling), and nothing that is only there to look nice (coherence). Length matters too. A 2014 study of edX lecture videos by Guo, Kim and Rubin found that students rarely watched more than about six minutes, however long the video was.
The trap is that a clear video feels like learning. The explanation flows, you nod along, and you leave sure you got it. That is the fluency illusion: recognizing something while you watch is not the same as recalling it a week later. What makes it stick is retrieval practice after the video, or even between its parts. Studies by Karl Szpunar and colleagues found that short tests between segments of a recorded lecture helped students learn more and judge their own learning more accurately.
So use videos with a target. A short video on the one concept you got wrong in a quiz beats a two-hour lecture you play in the background. Watch it, close it, then test yourself on that concept until you can explain it without help.
What makes an explainer video teach instead of just entertain
| Design choice | Why it helps you learn | Principle behind it |
|---|---|---|
| Spoken words over a matching picture or diagram | You build a verbal and a visual memory of the same idea | Dual coding, Mayer's multimedia principle |
| Short chapters with one idea each | Your working memory gets a pause before the next step | Segmenting |
| Arrows, highlights and a clear heading per scene | You see at once what matters and how the parts connect | Signaling |
| No background music, stock footage or off-topic jokes | Nothing competes with the content for your attention | Coherence |
| Plain, conversational narration | It is easier to follow than a formal lecture voice | Personalization |
| A question at the end of each chapter | You have to recall the idea, not just recognize it | Retrieval practice |
Step by step
- 1
Before you press play, write down the one question you want the video to answer.
- 2
Watch one chapter at a time and pause after each to say the main idea in your own words.
- 3
Rewatch only the part you could not explain, not the whole video.
- 4
Close the video and test yourself: write down what you remember or answer practice questions.
- 5
Turn the key points into flashcards and review them the next day and again a few days later.
- 6
Explain the concept out loud or to a friend without notes. Where you get stuck is what to study next.
How StudyPDF helps
Upload your lecture slides, notes or a YouTube video, and StudyPDF splits the course into topics and concepts, then builds flashcards, quizzes and practice exams from your own material, with every answer cited to the page. It tracks which concepts you have mastered and drills the ones you keep missing, so the test after the video goes straight to your gaps. We are also working on short explainer videos for single topics of your course.
See also
More questions
Are explainer videos better than reading?
Not by themselves. For processes, systems and anything that moves or has a shape, a good video can beat plain text because you see it happen. For definitions and dense arguments, reading is faster and easier to review. Either way, what you remember depends on testing yourself afterwards.
How long should an explainer video be?
Short. In the 2014 edX study by Guo, Kim and Rubin, students rarely watched more than about six minutes of any video. Aim for one concept per video and several short videos instead of one long one.
Do it on your own course
Upload your lectures and ask Bo. Cited answers, plus flashcards, exams, and more built from your material.