As a science educator, I have learned that teachers sometimes feel like they can’t teach science without specialized equipment. In my experience, however, there are many science concepts that can be demonstrated with very basic tools. Building a sundial is one activity that is rich in content and requires very few materials. Building sundials had been a successful activity for me with both students and teachers in the U.S, so I was excited to share the activity with teachers in Aceh during our two-week professional development session.