Conducting valuable interviews with the user by generating a relevant set of questions to be asked....
Understanding and learning from the user through observation, reflection and conversation.
Defining the problem or challenge we want to solve by synthesizing the information gathered in the research phase (observations and conclusions)
Creating as many creative solutions as possible
Building representations and fast models of the concept or idea in order to show it to the final user and get feedback from her / him.
To test is to share prototyped ideas and concepts with users. Testing the concepts with the user will help discover problems or bottlenecks in your design. Put your prototype in front of real customers and verify that it achieves your goals.