•Mathematically
proficient students
try to communicate precisely to others.
–They
try to use clear
definitions in discussion with others and in their own reasoning. They state the meaning of
the symbols they choose, including using the equal sign consistently and appropriately.
–They
are careful about
specifying units of measure, and labeling axes to clarify the correspondence with
quantities in a problem.
–They
calculate accurately and
efficiently, express numerical answers with a degree of precision appropriate for the
problem context.
–In
the elementary
grades, students give carefully formulated
explanations to each other. By the time they reach high school they have learned to
examine claims and make explicit use of definitions.
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