Part I: Sets
Collecting Things Together: Sets
Comparing Things: Relations
Associating One Item with Another: Functions
Recycling Outputs as Inputs: Induction and Recursion
Part II: Math
Counting Things: Combinatorics
Weighing the Odds: Probability
Squirrel Math: Trees
Part III: Logic
Yea and Nay: Propositional Logic
Something about Everything: Quantificational Logic
Just Supposing: Proof and Consequence
Sticking to the Point: Relevance in Logic