Chunking refers to the strategy of breaking down information into bite-sized pieces so the brain can more easily digest new information. The reason the brain needs this assistance is because working memory, which is where we manipulate information, holds a limited amount of information at one time.
Montana Tech instructors.
If you would like to learn more, please visit either of these websites:
http://theelearningcoach.com/elearning_design/chunking-information/
https://elearningindustry.com/content-chunking-engaging-course