Virginia SOL 8.PFA.4.c

Math8th GradePatterns, Functions, and Algebra

The Standard

Write a multistep linear equation in one variable to represent a verbal situation, including those in context.

Virginia Standards of Learning for Mathematics · The student will write and solve multistep linear equations in one variable, including problems in context that require the solution of a multistep linear equation in one variable.

Teacher's field guide

What This Standard Means

What Students Need to Do

Students identify the unknown quantity and assign it a variable. They translate fixed amounts, rates, and adjustments into an equation that matches the situation.

What Mastery Looks Like

Students define the variable and write an equation that matches every quantity and operation in the situation. They can explain what each coefficient and constant represents.

Common Misconceptions

Students may treat every number as a separate term or multiply quantities that should be added. They may reverse subtraction, omit grouping symbols, or write an expression without an equal sign.

How to Assess It

Exit ticket: “A bike rental costs $18 plus $7 per hour. A $5 coupon makes the total $48. Define a variable and write an equation. Do not solve.”

Lesson moves

Ways to Teach It

  1. Use balance mats, cups, and counters to model a fee situation, then replace each object group with an algebraic term.

  2. Display two equations for the same ticket-sale story and ask students to defend which equation preserves the stated relationships.

  3. Run an equation-match relay where teams pair situation cards with variable definitions and equation cards, then correct mismatches.

  4. Use a phone bill with a monthly fee, per-gigabyte charge, and credit; students write an equation for an unknown usage amount.

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