In this episode, Santiago Borio and David Stern explore the journey of transforming maths education in Africa through STACK internships. They discuss how former team members, now PhD students, and local talents leveraged STACK, an open-source tool, to innovate teaching methods. They highlight the initial challenges of training interns virtually, the pivotal role of face-to-face interaction, and the interns' substantial contributions to the STACK community, particularly at the first African STACK conference. The episode celebrates the interns' growth, and their impact on educational institutions.