This article describes the development of the contextualized math, the course design, student teaching and daily interaction with the students, and the implementation aspects of the research project designed to develop contextualized mathematics and integrate it into the Auto Technician courses. The applied math curriculum was integrated into three auto tech classes: Auto Transportation Core, Auto Engines, and Auto Electrical. There were two instructors in each classroom--an auto instructor and a math instructor. The applied math program that was developed is on the cutting edge of mathematical applications. Co-teaching is quite effective when both instructors feed off of each other's daily topics. Students were helped by: (1) allowing for the student's math development to be with contextualized math; (2) providing the students a comfortable environment where they learn math that makes sense to them; (3) reducing the time frame needed for students to complete their math requirements for their associate degree by integrating math into their auto technician classes; and (4) helping reduce the amount of money spent by the students by including the sequencing of their math requirements within their technician program. (Contains 1 figure.)