This is a video of an animation which can be used to explain how a simplified bubble sort works. I use this to show my students before looking at the algorithm, to get them thinking about how it works, I then ask them to check their predictions from the animation against the actual algorithm.
Having an animation which shows this process in detail has been extremely useful for my students in understanding the algorithm better. I tried to find something similar on YouTube before deciding to make this, but couldn't find anything that showed exactly what the algorithm was doing.
There will be a full lesson to follow for this, which will be bundled!