Opening Real Science (ORS) is a three-year government initiative developed as part of the Mathematics and Science Teachers program. It is a collaboration across universities involving teacher educators, scientists, mathematicians, statisticians and educational designers aimed at improving primary and secondary pre-service teachers' competence and confidence in mathematics and science. The ORS project has developed 25 online learning modules for pre-service teacher programs. Statistical literacy is prioritised. The Statistical Literacy Module for Primary Teachers (SL-P) adopts an inquiry-based approach and uses resources and contexts relevant to their practice. This paper documents the development and evaluation process of SL-P from its conception to implementation, and reviews the initial trials.