MMSD Mathematics Content Standards for Measurement - Grade 8
Introduction | Grade 6 | Grade 7 | Grade 8
Achievement of the following grade-level standards supports achievement of Wisconsin Model Academic Standards.
By the end of eighth grade, students will...
Understand measurable attributes of objects and the units, systems, and processes of measurement* (WMAS D.8.1, D.8.2) including
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facts, principles, and techniques of both metric and customary systems of measurement, e.g., 12 inches = one foot; the metric system is based on 10; a paperclip has a mass of about one gram;
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approximate comparisons between metric and customary units, e.g., a liter and a quart are about the same; a kilometer is about six-tenths of a mile;
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selection and use of appropriate size and type of unit to measure angles, length, perimeter, area, distance, surface area, and volume;
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knowledge that direct measurement produces approximate, not exact, measures;
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knowledge that the use of smaller units produce more precise measurements;
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situations where they are not directly or easily measurable, e.g., area of an irregular figure, distance, height, sampling for data analysis.
Apply appropriate techniques, tools, and formulas to direct measurements* (WMAS D.8.3) of
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lengths to the nearest mm or ½, ¼, 1/8, and 1/16th of an inch, including mixed number measurements, e.g. 3 ½;
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weight and mass to the nearest 0.1 g or 0.5 ounce;
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liquid capacity to the nearest milliliter;
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angles to the nearest degree;
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temperature to the nearest degree Celsius or Farenheit;
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elapsed time to the nearest second.
Apply appropriate techniques, tools (including technology), and strategies of indirect measurements* to (WMAS D.8. 4)
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estimate measurements (including using common and informal benchmarks);
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convert from one unit to another within the same system;
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solve problems involving scale factors, using ratio and proportion;
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apply formulas to determine perimeter and area of shapes;
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apply formulas to determine the surface area and volume of objects;
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develop and apply the Pythagorean relationship, including 30/60/90° triangles and 45/45/90° triangles;
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determine geometric relationships and properties for angle size, e.g., parallel lines and transversals; sum of angles of a triangle; vertical angles;
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solve problems involving rates and derived measurements for such attributes as population density, change, and slope.
*May be addressed in Science or other content areas.
Introduction | Grade 6 | Grade 7 | Grade 8