Algebra I in Simple English/Proportions and Proportional Reasoning/Chapter Review
From Wikibooks, the open-content textbooks collection
Lesson 1. Proportions
Lesson 2. Percents
Lesson 3. Percent of Change
Lesson 4. Weighted Averages
Lesson 5. Direct and Inverse Variation
Lesson 6. Solving Similar Triangles using Proportions