Statistics need data and data need context. Contexts from across the curriculum can be the most powerful in creating interest, reward, and enthusiasm for both teachers and students. The activity described here is based in STEM, employing aspects of each field to create and solve a hypothetical problem of escaping from an erupting volcano (Science) by planning (Engineering), collecting (Technology), and analysing (Mathematics, Technology) data. The software "TinkerPlots" allows the exploration of emergent ideas associated with trend in bivariate numerical data, covariation, and extrapolation in Year 5.