an aide-mémoire

Notes or pictures that one uses to remember something. When I was studying for the test, I made an aide-mémoire of all the steps in photosynthesis.

(formal)

a piece of writing or a picture that helps you to remember something I write notes to myself and put them on the board. It serves as an aide-mémoire.

Name	Pronounced	Usage
Short	[ʃɔ:t]
Callistus	kə-LIS-təs (English)	Late Roman
Alysa	ə-LIS-ə	English (Modern)
Marjory	['ma:dʒəri]
Ji-Yu	jee-yoo	Korean
Cathasach	-	Ancient Irish