Logic provides the framework that allows us to agree on what is, or is not, a valid argument. It is possible to deepen understanding of the rules of logic by offering some well-chosen puzzles that highlight important ideas. This session’s puzzles all come from a lovely book entitled What is the Name of this Book: The riddle of Dracula and other logical puzzles, written by Raymond Smullyan, a mathematician, philosopher, magician, and author. This session is also suitable for student math circles and the classroom.

Problem Solving / General

Multiple Representations
Problem Posing

MP1 - Make sense of problems and persevere in solving them.
MP2 - Reason abstractly and quantitatively.
MP3 - Construct viable arguments and critique others' reasoning.
MP7 - Look for and make use of structure.
MP8 - Look for and express regularity in repeated reasoning.