Combining Like Terms (Part2)

  Classroom Resource Information  

Title:

 Combining Like Terms (Part2)

URL:

 https://aptv.pbslearningmedia.org/resource/our20-math-7621/combining-like-terms-part-2/

Content Source:

 PBS
Type: Audio/Video

Overview:

In this video lesson, students are working toward gaining fluency in writing equivalent expressions. The goal of this lesson is to highlight a particularly common error: mishandling the subtraction in an expression like 8–3(4+9x). To this end, students first analyze and explain the error in several incorrect ways of rewriting this expression. Then, they consider the effect of inserting parentheses in different places in an expression with four terms.

Content Standard(s):
Mathematics
MA2019 (2019)
Grade: 7
8. Solve multi-step real-world and mathematical problems involving rational numbers (integers, signed fractions and decimals), converting between forms as needed. Assess the reasonableness of answers using mental computation and estimation strategies.
Alabama Alternate Achievement Standards
AAS Standard:
M.AAS.7.8 Add and subtract integers in a real-world situation.
Mathematics
MA2019 (2019)
Grade: 7
Accelerated
21. Solve multi-step linear equations in one variable, including rational number coefficients, and equations that require using the distributive property and combining like terms.

a. Determine whether linear equations in one variable have one solution, no solution, or infinitely many solutions of the form x = a, a = a, or a = b (where a and b are different numbers).

b. Represent and solve real-world and mathematical problems with equations and interpret each solution in the context of the problem. [Grade 8, 11]
Mathematics
MA2019 (2019)
Grade: 8
11. Solve multi-step linear equations in one variable, including rational number coefficients, and equations that require using the distributive property and combining like terms.

a. Determine whether linear equations in one variable have one solution, no solution, or infinitely many solutions of the form x = a, a = a, or a = b (where a and b are different numbers).

b. Represent and solve real-world and mathematical problems with equations and interpret each solution in the context of the problem.
Tags: combining like terms, equations, expressions, linear
License Type: Public Domain
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AccessibilityVideo resources: includes closed captioning or subtitles
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Author: Kristy Lacks