This document provides a template for creating presentation slides to advocate for afterschool and summer STEM learning programs. It outlines a story arc approach with four questions: 1) Why does this matter to society? 2) How does this issue work? 3) What's getting in the way? 4) What can we do about it? Sample slides answer each question, citing research about the importance of STEM skills for careers and the economy, how afterschool programs spark interest in STEM subjects, and the lack of access to such programs in some areas. The document encourages using data and sharing one's own program details to effectively make the case for expanding access to afterschool STEM opportunities.