Copyright © Swun Math Grade 8 Unit 4 Constructed Response Rubric TE

Unit 1 ∙ Constructed

ResponseSCORING RUBRIC

Unit 4∙ Constructed Response

Linear Equations

TASK 1: Equations & Expressions with the Distributive Property

Answer/Exemplar Standard Points

1a.

8.EE.7 1

1b. 8 —6(2x—5) and 8– 12 x +30 8.EE.7b 1

2a. Yes, Jian’s work is accurate. I checked his work by solving the

original equation with his solution, x = 1.

8.EE.7b 1

2b. When both sides of an equation are multiplied by a power of ten

(or any other value), the equation remains balanced because the

same change is made to both sides.

8.EE.7b 1

3a.

8.EE.7b 1

3b. I multiplied each term on both sides of the equation by 12, which is

the greatest common multiple of each denominator. This allowed

me to solve the problem more efficiently than Maritza because I

eliminated the fractions. I solve the problem in fewer steps and

without having to do so much work with adding, subtracting,

multiplying, and dividing fractions. For me, it’s easier to do

mental math working with whole numbers than with fractions.

8.EE.7b 1

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