- Understand the attributes of length, capacity, weight, area, volume, time, temperature, and angle

- Develop the process of measuring and concepts related to units of measurement

Grades 3-5, page 223

Length can be thought of as unit lengths joined together, area as a collection of unit squares, and volume as a set of unit cubes.

*Benchmarks* 9C (The Mathematical World: Shapes)

Grades 3-5, page 223

Areas of irregular shapes can be found by dividing them into squares
and triangles.

Grades K-2, page 10

Tools such as thermometers, magnifiers, rulers, or balances often give more information about things than can be obtained by just observing things without their help.

*Benchmarks* 12C (Habits of Mind: Manipulation and Observation)

Grades K-2, page 293

Determine the linear dimensions in whole units of objects having straight
edges.

*Benchmarks* 3A (The Nature of Technology: Technology and Science)

Grades 3-5, page 45

Measuring instruments can be used to gather accurate information for
making scientific comparisons of objects and events and for designing and
constructing things that will work properly.

*Benchmarks* 9A (The Mathematical World: Numbers)

Grades 3-5, page 212

When people care about what is being counted or measured, it is important
for them to say what the units are (three degrees Fahrenheit is different
from three centimeters, three miles from three miles per hour).

*Benchmarks* 9A (The Mathematical World: Numbers)

Grades 3-5, page 212

Measurements are always likely to give slightly different numbers,
even if what is being measured stays the same.

- Make and use estimates of measurement

Grades K-2, page 290

Make quantitative estimates of familiar lengths, weights, and time intervals and check them by measurements.

- Make and use measurements in problems and everyday situations

Grades 3-5, page 293

Measure and mix dry and liquid materials (in the kitchen, garage, or laboratory) in prescribed amounts, exercising reasonable safety.