- Concept of Continued Ratio
- Problem-Concept of Continued Ratio
- Direct Variations
- Problem-Introduction to Direct and Inverse Variation
- Introduction to Proportion
- Problem-Concept of Proportion
- Direct Proportion
- Inverse Proportion
- Problem-Types of Proportion
- Solving Word Problem by Using Unitary Method
- Solving Word Problem by Using Proportion Method
- Solving Problem Involving Direct Proportion
- Solving Problem Involving Inverse Proportion
- Problem-Solving Problem Involving Direct Proportion

- Use of Proportion in Time and Work
- Problem-Use of Proportion in Time and Work
- Solving by Using Proportion in Time and Work-Word Problems1
- Speed and Average Speed
- Relation Between Time and Distance
- Conversion of Units of Speed
- More on Conversion of Units of Speed
- Problem-Conversion of Units of Speed
- Solve real life problems involving time and distance