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.
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 1B (The Nature of Science: Scientific Inquiry)
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 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 12B (Habits of Mind: Computation and Estimation)
Grades 3-5, page 290
Judge whether measurements and computations of quantities such as length,
area, volume, weight, or time are reasonable in a familiar context by comparing
them to typical values.
Benchmarks 11D (Common Themes: Scale)
Grades 6-8, page 278
Properties of systems that depend on volume, such as capacity and weight,
change out of proportion to properties that depend on area, such as strength
or surface processes.
Benchmarks 9B (The Mathematical World: Symbolic Relationships)
Grades 6-8, page 219
Mathematical statements can be used to describe how one quantity changes
when another changes. Rates of change can be computed from magnitudes and
vice versa..
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 6-8, page 291
Determine what unit (such as seconds, square inches, or dollars per
tankful) an answer should be expressed in from the units of the inputs,
and be able to convert compound units (such as yen per dollar into dollar
per yen, or miles per hour into feet per second).
Benchmarks 12C (Habits of Mind: Manipulation and Observation)
Grades 3-5, page 293
Measure and mix dry and liquid materials (in the kitchen, garage, or
laboratory) in prescribed amounts, exercising reasonable safety.