This work gives an account of the design, development and deployment of the Sonic Blocks, with a small group of children in a primary school. The work gained an understanding of the blocks unique capabilities to enable physical and embodied interaction for exploratory and expressive sound making purposes. The findings include a comparison to conventional music making software on a personal computer and insights into the ability of the Sonic Blocks to mediate a collaborative music making activity with children. This work also gives a rigorous account of the design process used to create the...