The document describes a study that evaluated a model for an online Child Development Psychology (CDP) tutorial course at the Indonesia Open University (IOU) which integrated Facebook and digital references. The study found that while the model was helpful for improving student understanding, it did not significantly increase student enrollment in the course. Strengths of the model included facilitating communication through a Facebook group and providing additional learning materials through linked digital references. However, not all Facebook group members were actively engaged. The study concluded that additional strategies are needed to improve student participation in the online CDP tutorials.