Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 6-8, page 291
Decide what degree of precision is adequate and round off the result
of calculator operations to enough significant figures to reasonably reflect
those of the inputs.
Benchmarks 11B (Common Themes: Models)
Grades 6-8, page 269
Mathematical models can be displayed on a computer then modified to
see what happens.
Benchmarks 2A (The Nature of Mathematics: Patterns and Relationships)
Grades 3-5, page 27
Mathematical ideas can be represented concretely, graphically, and
symbolically.
Benchmarks 11B (Common Themes: Models)
Grades 3-5, page 268
Geometric figures, number sequences, graphs, diagrams, sketches, number
lines, maps, and stories can be used to represent objects, events, and
processes in the real world, although such representations can never be
exact in every detail.
Benchmarks 9A (The Mathematical World: Numbers)
Grades K-2, page 211
Sometimes in sharing or measuring there is a need to use numbers between
whole numbers.
Benchmarks 12B (Habits of Mind: Computation and Estimation)
Grades 3-5, page 290
Use fractions and decimals, translating when necessary between decimals
and commonly encountered fractions halves, thirds, fourths, fifths, tenths,
and hundredths (but not sixths, sevenths, etc.).