Pupils often find the concepts of heat and temperature difficult to understand and differentiate. The authors believe that an image-to-writing approach can help pupils learn these two abstract concepts -- an approach that uses a series of guided enquiry activities involving heat and temperature. The basic premise is that pupils produce images to reason and work through their observations, and then progressively move towards using scientific terms to describe their understanding of the concepts. This approach was found to be effective in helping pupils develop a deeper understanding of the concepts. In this article, the authors outline the advantages of teaching this challenging concept through this approach.