NSES Content Standard Unifying Concepts
and Processes:
Constancy, change, and measurement Grades K12, page 118 Changes in systems can be quantified. Evidence for interactions and
subsequent change and the formulation of scientific explanations are often
clarified through quantitative distinctionsmeasurement. Mathematics is
essential for accurately measuring change.

Benchmark 11C Common Themes: Constancy
and Change
Grades 68, page 274
Symbolic equations can be used to summarize how the quantity of something
changes over time or in response to other changes.
Benchmark 11C Common Themes: Constancy
and Change
Grades 912, page 275
Graphs and equations are useful (and often equivalent) ways for depicting
and analyzing patterns of change.