Chapter 1. Disturbance as a driving force.- Chapter 2. A fictional
dialogue on infinitude of primes.- Chapter 3. Encounters with Euclidean
propositions.- Chapter 4. Stories on problem-solving instruction.-
Chapter 5. Encounters with Cardano's method.- Chapter 6. Synthesizing
exception-barring and what-if-not: If not, what yes?.- Chapter 7. From
"obviously wrong" methods to surprisingly correct answers.