Argumentation in science involves the development, justification, and defence of evidence-based claims, together with the reasoned dispute of counterclaims. This process is the foundation for all scientific endeavours. Supporting the development of argumentation skills, therefore, is a key part of science education. Laboratory work is also as an essential part of science. Combining these two activities, therefore, would seem to be worthwhile. In this study, researchers explored the impact of three different lab-based tasks on the nature and quality of any subsequent argumentation.