**Explanation** refers to the student using the language of mathematics to communicate how the student arrived at the solution.
**Justification** refers to the student using mathematical principles to support the reasoning used to solve the problem or to demonstrate that the solution is correct. This could include the appropriate definitions, postulates and theorems.
**Essentially correct representations** may contain a few minor errors such as missing labels, reversed axes, or scales that are not uniform.
**Fundamentally correct representations** may contain several minor errors such as missing labels, reversed axes, or scales that are not uniform.
Last Revised 8/16/00 |