This download consists of the 5 PowerPoints used to make the videos for each section of Chapter 4 listed below. Chapter 4 Ratios, Rates, and Proportions4.1 Introduction…4 slides 4.2 Ratios & Rates…18 slides 4.3 Unit Rates & Unit Prices…23 slides 4.4 Introduction to Proportions…14 slides 4.5 Solving Problems Using Ratio and Proportional Reasoning…10 slides