Okay kiddo, have you ever looked at a timeline before? It's like a big line that shows important events that happened over time. A short chronology timeline is just a timeline that shows events in a shorter amount of time.
Let's pretend we're making a short chronology timeline of your day. We would start by putting a line on a piece of paper and marking the start of your day at the left side of the line. Then we would add little symbols or pictures to represent the important things that happened during your day, like brushing your teeth, eating breakfast, playing with toys, etc.
This way, we can see all the important things that happened during your day in order, and we don't have to include every little detail. Just the most important things!
The same thing can be done for important events in history or in a certain period of time. It's just a way to organize and understand events in a shorter amount of time. Does that make sense, kiddo?