This chapter discusses mathematical literacy in the context of the teaching and learning of statistics at the secondary level (Grades 7–9). This includes exemplifying how tasks and activities in statistics can be designed and implemented to support students in developing mathematical literacy using the models and modelling theoretical perspective and model development sequences. The chapter discusses literature on statistical literacy and related notions in the field of statistics education and links these to mathematical literacy more generally. Connections are made and highlighted between mathematical literacy and tenets of the models and modelling perspective as well as model development sequences. These connections are then illustrated as they come to the fore in an example of an activity from a research project focusing on the teaching and learning of statistics, which sheds light on the students’ opportunities to develop their mathematical literacy.