NSES Content Standard Unifying Concepts
and Processes:
Constancy, change, and measurement Grades K-12, page 117 Although most things are in the process of becoming different--changing--some
properties of objects and processes are characterized by constancy, including
the speed of light, the charge of an electron, and the total mass plus
energy in the universe. Changes might occur, for example, in properties
of materials, position of objects, motion, and form and function of systems.
Interactions within and among systems result in change. Changes vary in
rate, scale, and pattern, including trends and cycles.
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Benchmark 4C The Physical Setting: Processes
that Shape the Earth
Grades K-2, page 72
Change is something that happens to many things.
See also Chapter 11 Common Themes, Section C: Constancy and Change.