More videos of different time-lapse and "sped up" storytelling techniques...
Obviously our students may not be as artistic as those in the videos, but you could add simple props and pre-drawn artwork (from the kids) to shoot the video with.
Here are two that have been "sped up" during playback. If you had narrated them, your voice would sound like a chipmunk ("Speed up" is a feature that many free video effect apps can give you.)
Here's one that two sister drew together under the time-lapse feature on their video camera. The music was added later, iPhones don't record audio while taking time-lapse videos.
Keep in mind that many smartphones have a limit to the amount of video you can record with "time lapse" feature. Test yours out ahead of time. You want to be able to record at least a 3 or 4 minute video because the time-lapse playback will only be around 10-20 seconds on default settings.
The workaround is to either download a time-lapse app so you can control the time-lapse feature, or use a standalone video camera so that the length of the video isn't an issue.
Tip: Play around with the time-lapse feature at home. My grandkids think it's a hoot to bounce around and then watch themselves in time-lapse, It creates some funny effects.