February is Black History Month, and it is is a good place to start if you want to show students a diversity of Scientists in STEM. I’m putting together a calendar for each of the weekdays in February highlighting current and historical Black Canadians and others from around the world engaged in Science, Technology, Engineering and Math. Clicking on the name links in the actual calendar gets you to some biographical information about that person. You can find the calendar at Black in Stem 2021 Week 1 I will be updating it for each week in February.
You might also want to check out this assignment idea, A Scientist Like Me, if you want to diversify what your students think of as a mathemetician or scientist.