Rubric

Each student’s document should contain 1 point for prediction only. ||
 * Element ||  Max  ||  How to score  ||
 * A solution (showing work) using Cramer’s rule ||  2  ||  This is group work. 2 points if the entire solving steps are shown. 1 point if some of the steps are missing or left incorrect.  ||
 * A solution using Row Operations. ||  2  ||  As above.  ||
 * A comparison of the results – that they are the same. ||  2  ||  2 points for the statement and illustration that the solutions are the same. 0 otherwise.  ||
 * A statement reflecting upon the appearance of the identity matrix while performing each method. ||  2  ||  1 point for identifying the identity matrix in each problem, by words, or by notation.  ||
 * A new selection of values for this student’s individual problem ||  2  ||  2 points if complete set of values are selected, different from the given problem. 0 if the same values are used for each.  ||
 * A prediction of the new i1 ||  2  ||  2 points for prediction, and rationale of why.
 * This solution using Cramer’s ||  5  ||  5 points for evidence showing the student understands the procedure and can execute it without mistake. 4 points if just mathematical errors prevent finding the solution. 2 points if the broad outline of the method is at least shown.  ||
 * This solution using Row Operations ||  5  ||  As above  ||
 * A statement comparing the prediction with the actual result. ||  2  ||  2 points for a cogent explanation of the comparison. 1 point for comparison if they do not agree.  ||