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Assessments
ODE Assessment Item, Grade 7: Identify Scale Factor
Discipline
Mathematics
Grade
7
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Professional Commentary

Students must identify the scale factor used in a diagram. This multiple-choice question is a sample item used in the 2007 Ohio Grade 7 Achievement Test (see Overview of Ohio's Assessment System). The URL link (above) takes the user directly to the OAT item (PDF), with access to performance data, complexity level of the item, and discussion of incorrect responses. The Ohio Department of Education Instructional Management System website allows visitors to search for test items by subject and grade band and build a printable database of questions using the Add to Your Backpack function. ODE Reference Information: 2007 Ohio Grade 7 Achievement Test for Mathematics, Annotated Item 12. (author/sw)


Ohio Mathematics Academic Content Standards (2001)
Geometry and Spatial Sense Standard
Benchmarks (5–7)
J.
Apply properties of equality and proportionality to solve problems involving congruent or similar figures; e.g., create a scale drawing.
Grade Level Indicators (Grade 7)
6.
Determine and use scale factors for similar figures to solve problems using proportional reasoning.
Principles and Standards for School Mathematics
Geometry Standard
Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships
Expectations (6–8)
understand relationships among the angles, side lengths, perimeters, areas, and volumes of similar objects;