2. Variables and Data Types# 2.1. Learning Objectives# 2.1.1. Primitive Types in Depth 2.1.2. Operators and Expressions 2.1.3. Constants, Scope, and Math 2.1.4. Chapter Exercise 2.1.5. Preview\n\n 2.1.6. Homework\n\n 2.1.7. Lab\n\n