Principles and Standards for School Mathematics

Measurement Standard

Measurement Standard (pre-K - 2)

recognize the attributes of length, volume, weight, area, and time;


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compare and order objects according to these attributes;


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understand how to measure using nonstandard and standard units;


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select an appropriate unit and tool for the attribute being measured.


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Measurement Standard (3 - 5)

understand such attributes as length, area, weight, volume, and size of angle and select the appropriate type of unit for measuring each attribute;


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understand the need for measuring with standard units and become familiar with standard units in the customary and metric systems;


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carry out simple unit conversions, such as from centimeters to meters, within a system of measurement;


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understand that measurements are approximations and how differences in units affect precision;


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explore what happens to measurements of a two-dimensional shape such as its perimeter and area when the shape is changed in some way.


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Measurement Standard (6 - 8)

understand both metric and customary systems of measurement;


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understand relationships among units and convert from one unit to another within the same system;


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understand, select, and use units of appropriate size and type to measure angles, perimeter, area, surface area, and volume.


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Measurement Standard (9 - 12)

make decisions about units and scales that are appropriate for problem situations involving measurement.


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