In this paper, we propose that informal aspects of data science could be introduced in primary school. The International Data Science in Schools Project (IDSSP) framework for data science curriculum provides a guide for a data science curriculum aimed at upper secondary level. We analyzed synergies between the IDSSP framework and the current content of the Australian Curriculum at the primary school level (ages 5-11) for Mathematics, Digital Technologies, and two General Capabilities (ICT, Critical and Creative Thinking). Our findings suggest that the primary curriculum already exists to support informal, age-appropriate data science content for young children. A vignette of a Year 4 (age 9) class is used to illustrate what such a curriculum could look like in practice.