This presentation discusses how teachers can use MAP assessment data and the DesCartes report to differentiate instruction for math and science students. The presentation reviews what MAPs is and its benefits, how to interpret student RIT scores and normative data, principles of differentiated instruction, and strategies for differentiating content, process, product, and grouping using the DesCartes student report. Teachers are encouraged to use MAP data to target instruction to student ability levels and design flexible lessons and assignments.