Lesson #1 - Ratio & Rate. This lesson introduces the basic concept of ratio and rate with ample examples and graphics. The tutorial teaches the language of ratio, the methods of problem-solving, and the importance of comparing quantities correctly. The option is presented to review the prerequisite skill of changing fractions to lowest terms. A concept check gives an item analysis of the student's comprehension of the tutorial. Module APRP1CD Home Version Win on CD sent via USPS $10.95
Lesson #2 - Ratio Applications Tutorial with graphics and concept checks covers the language and symbols of ratios and gives an option to review. The concept check tests writing and solving ratios and presents ratio applications in critical thinking. Incorrect responses lead to step-by-step solutions to correct answers.
Lesson #4 - Proportion Applications and Concepts. Tutorial expands on the four ways to tell if two ratios are equal and explains the terms of a proportion. Graphics and examples distinguish direct from indirect proportions. The distinction becomes the key to solving problems in the concept check. A review of reciprocals of fractions is also presented. Concept check gives item analysis.
Lesson #5 - Rate Applications - Cost per Unit Tutorial focuses on determining rates and costs per unit. Covers solving for "n" algebraically when you know any three terms of a proportion.
Lesson #6 - Combining Rates of Work Tutorial with graphics and concept checks teaches how to solve a variety of problems that involve combining rates of work. (Bill paints a room in 5 hours. Ann paints a room in 4 hours. Working together how long will it take to paint the room?) Shows in detail solving for "t" via the step-by-step conventional method and by the shortcut of using the reciprocal of the fraction before "t" in any equation. Before the student enters the concept check, the lesson reviews the prerequisite skills of changing fractions to lowest terms, changing improper fractions to mixed numbers, and adding unlike fractions.