This is a poster presented at the 7th Shaw-IAU Workshop on Astronomy for Education, organised by the IAU Office of Astronomy for Education (OAE, https://astro4edu.org/shaw-iau/7th-shaw-iau-workshop/). Title: Astronomy in Primary Education: A Teacher Training Project Presenter:Lara Rodrigues (Universidad Metropolitana de Ciencias de la Educación (UMCE), Chile) This talk presents the initial results of a project that aims to develop, implement, and research an astronomy teacher training program (TTP) for primary education focused on Sun-Earth-Moon related topics in Chile. The TTP started in May 2025 with 16 participants, after a pilot summer workshop with 8 teachers to test the activities and research instruments. The program has a hybrid format, with six in-person sessions distributed over 6 months and intercalated with virtual assignments and school implementation tasks. Teachers' content knowledge and attitudes towards astronomy are evaluated at the beginning and end of the TTP. Entrance and exit tickets for each in-person session and the responses to virtual assignments are also analyzed. About the 7th Shaw-IAU Workshop:The 7th Shaw-IAU Workshop took place 18 - 21 November 2025. The Shaw-IAU workshops focus on astronomy education for primary and secondary school students and teacher training both in universities and in service. This year's Education focus session on Teaching with authentic data and the Science focus is on Galaxies.More details can be found on: https://astro4edu.org/shaw-iau/Keep up to date with future Shaw-IAU Workshops and other opportunities at the IAU Office of Astronomy for Education by joining our mailing list https://astro4edu.org/mailing-list/ Follow the IAU OAE on Bluesky and Facebook under @astro4edu