# ALEX Resources

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ALEX Classroom Resources
Subject: Mathematics (7)
Title: Grade 7 Mathematics Module 2, Topic C: Applying Operations With Rational Numbers to Expressions and Equations
URL: https://www.engageny.org/resource/grade-7-mathematics-module-2-topic-c-overview
Description:

In Topic C, students problem-solve with rational numbers and draw upon their work from Grade 6 with expressions and equations. They perform operations with rational numbers, incorporating them into algebraic expressions and equations.  They represent and evaluate expressions in multiple forms, demonstrating how quantities are related. The Integer Game is revisited as students discover “if-then” statements, relating changes in players’ hands (who have the same card-value totals) to changes in both sides of a number sentence. Students translate word problems into algebraic equations and become proficient at solving equations of the form px + q = r and p(x + q) = r, where p, q, and r, are specific rational numbers. As they become fluent in generating algebraic solutions, students identify the operations, inverse operations, and order of steps, comparing these to an arithmetic solution. The use of algebra to represent contextual problems continues in Module 3.

ALEX Classroom Resources: 1