Looks like it could be a file type for some proprietary system the school could be using. She may need to upload it to a website or have a certain application installed. I found this site which says you upload that extension to it to view the file.
What format are you expected to deliver in?
Given the timeframe and size of project, I would have said Rise too. Try contacting them to extend the trial? Or pay for a month?
If it really has to be free, Moodle is a good free LMS. And you can create content in it - sequences of text/graphics/video/audio etc, and quizzes.
Adapt is a good free e-learning authoring environment. Creates a scroll page of various block-types, like Rise. More modern than slide decks with next buttons.
Both Moodle and Adapt require command-line tech savvy to setup, as they are server-based. (remote or local.) You could build huge varied courses with those two - after significant upfront effort and learning curve,
What's your definition of e-learning? A series of tutorial videos, inside HTML pages can be a good solution. Try Explain Everything ... https://explaineverything.com/.
Powerpoint is also good for making graphic annimations with voiceover, then exporting to video
Good luck!
There is an education version which is a stand alone purchase that doesn't require a subscription but you need to be using ASM/VPP/MDM to deploy it. You can buy licenses and distribute it via your MDM: https://explaineverything.com/explain-edu/
I've not tested it with what you specifically want but our teachers here use an app called Explain Everything. It's a whiteboard app that allows you to export as a video.
An idea
Scrap the touchscreen TVs
Have iPads + Apple Pen available in meeting rooms
Push people towards collaborating on iPads instead
e.g. how they do it in this video https://explaineverything.com/digital-whiteboard-on-a-remote-meeting/
So:
Start zoom meeting
screen share the iPad
on the iPad, run the whiteboard software
Work on the iPad
Remote attendees can also work on the whiteboard software from their computers (point/click/keyboard)
Explain everything works. Have used it for years with iPad. They have since switched to a monthly fee. Used to be cheaper when I bought it though. You can auto save to a bunch of clouds. Pdf exports, etc.
Are you trying to record a lecture like that to upload to an online learning system? I've been doing that all semester using Explain Everything (I use an iPad but there's an Android version). If you look at the videos they have, they show it doing some pretty complex stuff. I mostly use it for annotating PDFs as I talk, or to use it as a virtual whiteboard.
The big advantage is that the recording controls are really simple, so I found myself wasting very little time in my recordings. If I screw something up (or if the dog starts barking at the neighbours) it's trivial to go back a few seconds and only re-record the last sentence or two.
https://explaineverything.com/ kind of feels like a big giant open canvas, so when you said "like cutting pages from magazines" it made me think of it. I haven't personally used it (yet) a coworker and I were just reading about it the other day so it's top of mind.
The thing I do use is Google Keep. At the surface it may feel like a regular notepad app, but you can color code, add links, add a key photo, etc. I like that I can use it across platforms (vs just a standalone app b/c I don't just find things on my phone).
There's an iPad app called Explain Everything which lets you record your voice and do whiteboard-style videos.
Khan Academy has an article for translators describing how to make this style of video, and there's a link from there to a doc with tips.
Have you thought about incorporating digital whiteboard? I have been using Explain Everything for over 3 years now and I'm satisfied. If you need some inspiration this is worth reading. https://explaineverything.com/11-creative-ways-to-use-a-digital-whiteboard-in-the-classroom/
Maybe Explain Everything? It's an interactive whiteboard. As far as I remember it's available on Chromebook and other platforms. Definitely worth to check it out if you want to play with videos, recording, audio and sketchnotes.
I do similar with PowerPoint and a surface,
Also Explain Everything with IPad Pro and Apple Pencil (https://explaineverything.com) which I prefer over using PowerPoint with my iPad.
Multiple ways to do it.