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Middle School | Mathematics | Estimation and Measurement

Measurement provides a way to answer questions about “how many,” “how much” and “how far.” It is an indispensable component of business, manufacturing, art, medicine and many other aspects of daily life. We describe the sizes, capacities and values of many things, from the large distances involved in space travel, to the very small quantities in computer design and microbiology, to the varying values of currencies in international monetary exchange. All people must be able to choose an appropriate level of accuracy for a measurement; to select what measuring instruments to use and to correctly determine the measures of objects, space and time. These activities require people to be able to use standard instruments including rulers, volume and capacity measures, timers and emerging measurement technologies found in the home and workplace.

Learning Objectives

Measure and compare quantities using appropriate units, instruments and methods:

  • Measure length, capacity, weight/mass and angles using sophisticated instruments (e.g., compass, protractor, trundle wheel).
  • Apply the concepts and attributes of length, capacity, weight/mass, perimeter, area, volume, time, temperature and angle measures in practical situations.

Estimate measurements and determine acceptable levels of accuracy:

  • Select and apply instruments including rulers and protractors and units of measure to the degree of accuracy required.

Select and use appropriate technology, instruments and formulas to solve problems, interpret results and communicate findings:

  • Construct a simple scale drawing for a given situation.
  • Use concrete and graphic models and appropriate formulas to find perimeters, areas, surface areas and volumes of two- and three-dimensional regions.

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