About the Topps Tetrahedron

We introduce this as a conceptual framework to provide a broader overview of the main issues.

This short video describes a tetrahedron representation of how these concepts fit together. It will help you to navigate the rest of the framework within this virtual case.

You can explore the 4 main faces from the model on the START page, or using the link buttons below. More interestingly, you can explore the six edges or interfaces between these, using the 'discovery loops' - click on the index in the top right to get directly to these.