Introduction to Pure Mathematics for Advanced High School Students consists of a series of lessons in Logic, Set Theory, Abstract Algebra, Number Theory, Real Analysis, Topology, Complex Analysis, and Linear Algebra. Lesson 1 from this series covers the basics of mathematical logic. In this lesson we will learn about statements, logical connectives, truth assignments, the construction of truth tables, how to determine truth without a truth table in an efficient yet rigorous way, and the notion o