What students learn

In this lesson, students recognize and represent proportional relationships between quantities.

  • Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.

  • Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships and represent proportional relationships by equations.

  • Explain what a point (x, y) on the graph of a proportional relationship means in terms of the situation, with special attention to the points (0, 0) and (1, r) where r is the unit rate.

Course curriculum

    1. Introduction to Proportionality

    2. Quiz I

    3. Constant of Proportionality

    4. Quiz II

    1. Expressing Proportional Relationships using Equations

    2. Quiz III

    3. Quiz IV

    1. Non-proportional Relationship

    2. Quiz V

    1. Proportional Relationships on a Graph

    2. Quiz VI

    3. Using Graphs to Solve Proportional Problems

    4. Quiz VII

About this course

  • 13 lessons