The title basically says it all. I need to prepare material for a whole classroom of elementary statistics students, so if anyone wants to help me out in the name of math education, that'd be great!
This might be helpful:
Pishro-Nik, Hossein. Introduction to probability, statistics, and random processes. (2016). Open access textbook.
Section 8.2.3: Maximum Likelihood Estimation.
His exposition includes five examples, several discrete, with solutions.
"I have a bag that contains 3 balls. Each ball is either red or blue." Etc.