Step 1
Investigative Sketches
Objective
Draw quick and loose, Use sketch to understand a problem, analyze structure and elements relevant to the project.
Step 2
Explorative Sketches
Objective
Map out readable sketches. Generate and explore more to illustrate the more fleshed out ideas for evaluating.
Step 3
Explanatory Sketches
Objective
Create to explain context, interaction and functionality, often communicate a design in a clear and neutral manner.
Step 4
Persuasive Sketches
Objective
find more example here and how it was developed into medium medium-fidelity sketch