Boundaries of designing is a project to see where the act of designing becomes something else; it's an approach to defining designing by first defining what it's not.
Products as transformers, an approach to structuring design processes based on treating products as transformers of their inputs to outputs.
Function modelling, to better understand the transition between reasoning about function and behaviour, and reasoning about form & shape.
Reflection: the capacity of a person to think about self and the self's actions in a broader context.
Problem analysis: a generalization of design briefs and requirements engineering, problem analysis involves identifying a problem and framing it in a way to which all agents agree.
Design thesaurus is a project intended to try to capture similar ideas about design in an informal way.