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  3. Show an explanation after each question

Show an explanation after each question

Add text, a picture or a short YouTube clip to a question, show it on the big screen after the answer, and hide it again when you’re done.

An explanation is what the class sees after you reveal the answer: a few lines you read aloud, a picture, a short video, or two of these side by side. It’s optional, and you can add one to any question.

You add explanations on the projector computer, before you click Start the quiz. During the lesson, you show and hide them from your phone.

Add an explanation

  1. 1

    Open the explanation editor

    Once your questions are added, click the row that says how many questions are ready. Next to a question, click Add explanation. If you’re writing a question yourself, open Explanation shown after the reveal (optional) under the answers instead. Once the explanation is complete, that heading shows Added with a tick, so you can see which questions have one without opening it.

  2. 2

    Choose a layout

    Under Layout, pick One to fill the screen with text, an image or a video. Pick Two columns to put two things side by side, such as two images to compare, or text beside a picture. Pick Two rows to put one above the other, such as a video with its notes below.

  3. 3

    Write the text

    For each part, choose what to Show: Text, Image or Video. For text, type what you’ll read aloud after the reveal. A blank line starts a new paragraph. Keep it under 2000 characters.

  4. 4

    Add a picture

    Choose Image, then Choose image…. Search Unsplash for a free photo, or upload your own JPG, PNG or WebP. An Unsplash photo shows its photographer’s name underneath. To swap it, click Change image. To take it out, click Remove image.

  5. 5

    Add a YouTube clip

    Choose Video and paste a link under YouTube link. Once Quizzy recognizes the link, Start (seconds) and End (seconds) appear, so you can play only the part you need. Each explanation can have one video.

  6. 6

    Check the preview and save

    On the big screen shows the explanation exactly as the class will see it. If the text is too long for one screen, the preview says so. During the lesson, Space scrolls it. When it looks right, click Save explanation. The question’s row then shows Explanation and what it contains. To change it later, click Edit explanation. To delete it, click Remove explanation.

In the lesson

  1. 1

    Show it after the answer

    Close the question and the answer is revealed on the projector. On your phone, tap Show explanation and it appears on the projector. On the projector computer’s keyboard, Space does the same, and scrolls long text before moving on.

  2. 2

    Hide it, or move on

    To go back to the answer and how the class voted, tap Hide explanation. You can show it again as often as you like. When you’re ready, tap Next question.

Pictures load in the background while the class is still answering, so they appear straight away when you show the explanation.

Videos play from YouTube on the classroom screen. If YouTube is blocked on your school network, the video won’t load, so try one on the projector computer before the lesson.

Do students see the explanation on their own devices?

No. Students only hold up printed cards. The explanation appears on the projector.

What happens if a picture or video doesn’t load?

The projector shows the question instead of a broken image, or says the video couldn’t load. Your phone tells you too, so you can carry on by reading the text aloud.

Can I add an explanation to a question that’s already in my quiz?

Yes. Click the row that says how many questions are ready, then Add explanation next to the question. You can do this any time before you start the lesson.

Is there a size limit for pictures I upload?

Any JPG, PNG or WebP works. Quizzy shrinks it to under 1 MB before uploading, so a very detailed photo may look a little softer on a big screen than an Unsplash photo.

Updated October 21st, 2026

Open Classroom Mode

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More in Teaching

  • Add students and save a class
  • Exit tickets and quick checks with survey mode
  • Get a report of your class’s answers
  • Group lessons by topic and sub-topic
  • How the camera reads the cards
  • Print answer cards for a class
  • Quiz a class without student phones
  • See how your class is doing across lessons
  • Set a quiz as homework with a link
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