AI Images Checked Before They Land — Slides You Can Put in Front of a Class

The slide says a triangle has three sides. The picture beside it, generated a minute before class, shows a shape with four. Or the deck on fractions asks students to count the shaded parts, and the AI has shaded five where the text says three. Or the labelled diagram of the water cycle is labelled in something that looks like writing from a distance and dissolves into nonsense once it is projected three metres wide.

Students notice. The sharp ones say so, the rest quietly learn the wrong thing, and the teacher spends the next five minutes apologising for a picture they did not draw. After that happens once, most teachers stop using AI images at all — which is a shame, because a good picture on the right slide genuinely helps. This release of EduGears AI inside Moodle, Canvas and any other LTI 1.3 LMS makes AI images something you can put in front of a class: every slide can carry one, and each AI image for a slide or a question is checked before it lands.

The wrong picture, in front of the class

Image models are very good at mood and very loose with facts. They will produce a convincing classroom, a pleasing landscape or a plausible-looking diagram, and they will happily put the wrong number of things in it or fill a label with letter-shaped noise. On a marketing banner nobody minds. On a teaching slide, the picture is part of the lesson: a wrong count or a garbled label is a wrong answer with the authority of the slide behind it.

So the useful question is not whether an AI can make an image for a slide. It is whether the image that reaches your deck is one you would be happy to defend — and what happens when it is not.

Every slide can carry an image

Every slide in the Slides editor now has an image control. Add image opens a dialog with three tabs:

• Paste URL — an image you already have online.
• Generate with AI — describe the picture and let AI make it.
• A picker for your Library — the images already in your Media Library.

Add alt text, choose where the image sits — Right, Left, Top or Full slide — and how big — Small, Medium or Large — and a live preview shows the result as you go. Replace and Remove image are there when you change your mind.

New decks come with a starting point: deck generation now writes an optional one-line image suggestion for each slide, and Generate with AI opens with it already filled in. Nothing is generated until you ask.

Checked before it lands

Each AI-generated image — from Generate with AI, from Illustrate all, or from a question's image dialog — is now checked for accuracy before it is added. The check looks for exactly the failures that embarrass a teacher in front of a class:

An image that passes is added to the slide or question as before. One that does not is never added.

An honest blank beats a wrong picture

This is the design decision that matters most. When an image fails the check, EduGears AI does not quietly drop in the best of a bad batch. A slide whose image fails keeps its suggestion and gets no image, and the summary says so plainly:

A blank slide is visible and easy to deal with. You can open Generate with AI on that slide — the suggestion is still filled in — and try a different picture, pick something from your Library, paste a URL, or decide the slide reads better as text. A wrong picture is the opposite: it looks finished, so it is the one that slips through to the lesson. We would rather hand you the first problem than hide the second.

Illustrating a whole deck

For a whole deck at once, Illustrate all makes an image for each slide that has a suggestion and no image yet. Before it starts, it tells you how many AI credits it will use and asks you to confirm. It shows its progress as it goes, and a slide that fails does not stop the rest: the deck finishes, the passing images are in place, and the summary names how many slides were left with their suggestion instead.

Images are advanced AI, so they run on AI credits — or on your own AI account with bring-your-own-key (BYOK), on any plan. On paid plans, generating the slide deck itself is text-based course creation, included with no credit limits under fair use; the images are what draw credits, and Illustrate all tells you what it will use before anything happens.

PowerPoint and course exports

The PPTX download embeds the images in the file itself — real PowerPoint, fully editable. A slide whose image cannot be fetched downloads as text-only rather than failing the whole file. SCORM, Common Cartridge and Moodle-backup exports carry the images the same way they already carry images on Pages.

Decks you already have are unchanged: a text-only deck stays exactly as it was. And Enhance with AI never touches your images; they are preserved exactly.

Plain limits

Two limits, plainly: one image per slide, in preset positions. For finer control, the downloaded PPTX is fully editable in PowerPoint. And the check is a filter, not a substitute for your eye — look over a deck before you teach from it, as you would any slide you did not draw yourself.

Where to start

Generate a new deck for a lesson you teach next week, open the Slides editor, and look at the image suggestion on each slide. Use Generate with AI on the two or three slides where a picture would genuinely help — or Illustrate all if the deck is visual from end to end — and read the summary when it finishes. Any slide left with its suggestion is a slide where the check would not let a wrong picture through.

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