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Incorrect Worked Examples Intervention

8th Grade

About the Intervention

The Incorrect Worked Examples intervention is an algebra instructional strategy designed for middle school students (8th grade) learning systems of equations in Algebra I. Students study examples of fictitious students' errors on algebra problems and respond to self-explanation prompts that highlight common misconceptions (e.g., understanding the equal sign as indication of balance). The intervention is delivered through four worksheets completed individually over 5-7 weeks, with approximately 20 minutes per worksheet. Each worksheet contains four example-problem pairs where students study incorrect worked examples with highlighted errors, explain the errors through prompts, then solve a paired "Your Turn" problem. The intervention targets students who struggle with algebra, particularly those with low prior knowledge, by normalizing errors as part of learning and drawing attention to components that make solutions incorrect.

Statistical Findings

Positive effect: on learning for students with low prior knowledge

No effect: on learning overall

No effect: on competence expectancy

No effect: on sense of belonging to math

More Intervention Details

Focus Areas

N/A

Programs & Services

General Education

Delivery Methods

Face-to-Face

Disability Support

N/A

Target Groups

Student(s)

Study Demographics

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Participant Race

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Participant Gender

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Other Participant Characteristics

Geographical Setting

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Not reported

Intervention Price Book

Personnel
1 items /
$72.33
General Education Teachers
Full-time or part-time general education classroom teachers
FTE
1
Salary
$65,000
Total
$72.33
Classroom Supplies & Learning Tools
1 items /
$24
Paper
Printer and construction paper
qty
4
Unit cost
$6
Total
$24
Textbooks & Workbooks
1 items /
$60
Student Workbooks
Consumable workbooks
qty
4
Unit cost
$15
Total
$60
Facilities & Building Equipment
1 items /
N/A
Facilities
Facility rental and infrastructure costs
qty
1
Facility Type
classroom