Lesson: Proportions Mathematics • Third Year of Preparatory School

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In this lesson, we will learn how to use properties of proportions to find an unknown value in a proportional relationship and prove algebraic statements.

Lesson Plan

Students will be able to

define the terms proportion, continued proportion, first proportional, second proportional, third proportional, fourth proportional, middle proportional, means, and extremes,
use properties of proportions to
- evaluate unknowns,
- evaluate algebraic expressions,
- prove algebraic statements,
use properties of continued proportions to
- evaluate unknowns,
- evaluate algebraic expressions,
- prove algebraic statements.