In grades 3-5 all students should
- NM-MEA.3-5.1: Understand measurable attributes of objects and the units, systems, and processes of measurement
- NM-MEA.3-5.2: Apply appropriate techniques, tools, and formulas to determine measurements
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Understand measurable attributes of objects and the units, systems, and processes of measurement
- understand such attributes as length, area, weight, volume, and size of angle and select the appropriate type of unit for measuring each attribute;
- understand the need for measuring with standard units and become familiar with standard units in the customary and metric systems;
- carry out simple unit conversions, such as from centimeters to meters, within a system of measurement;
- understand that measurements are approximations and how differences in units affect precision;
- 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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Apply appropriate techniques, tools, and formulas to determine measurements
- develop strategies for estimating the perimeters, areas, and volumes of irregular shapes;
- select and apply appropriate standard units and tools to measure length, area, volume, weight, time, temperature, and the size of angles;
- select and use benchmarks to estimate measurements;
- develop, understand, and use formulas to find the area of rectangles and related triangles and parallelograms;
- develop strategies to determine the surface areas and volumes of rectangular solids.
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