These are the notes/examples I photocopy for my students on the topic of how to calculate geometric probabilities. I have included a highlighted (in gray) "reference information" section with the basic formula and the "helper" formula (that the total area equals the shaded area plus the unshaded area). I have found these reference information sections extremely helpful to students when they are studying for upcoming assessments.
Back in the day, I used to try to give a thorough lecture on eve