TechMath is a professional development program that forms collaborations among businesses, colleges, and schools for the purpose of promoting Science, Technology, Engineering, and Mathematics (STEM) careers. TechMath has provided strategies for creating highquality professional development by bringing together teachers, students, and business partners to allow teachers to design Problem-Based Learning (PBL) modules. Teachers reported that their participation enhanced their understanding of business applications for mathematics and science instruction. Results from surveys, questionnaires, and focus group sessions prompted recommendations for researchers, administrators, and practitioners interested in preparing students for STEM careers.