Probability Social Services
The classic 'two children, at least one girl' probability puzzle is charming in class but alarming in real life.
Use this cartoon
Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-04-24-probability-social-services/ (CC BY-NC 4.0)Transcript
[In Probability Class] A: "I have two kids, at least one of whom is female." B: "Why, what a delightful puzzle!"
[In Real Life] B (on phone): "Hello, social services? Yes, I'd like to report a case of likely child neglect. Well, the parent doesn't even seem to know the children's genders."