Each semester the Center for STEM Excellence at EKU holds a professional development workshop for undergraduate student partners who will be working as peer mentors, tutors, or learning assistants (LAs) in various STEM learning centers on campus. The lesson below was developed to highlight and provide ideas for implementation of goal-directed learning and scaffolding. Rather than extolling the virtues of these pedagogical tools, we created a lesson that would actively engage the student partners by using a mathematical modeling task that provided a low-floor, high-ceiling problem that students from any major could participate in. During this activity returning LAs acted as facilitators for each table of student partners. In preparation, these facilitators participated in their own PD session where the Coordinator, Rachel Maggard, acted as the facilitator and the LAs acted as the participants.