I found the exercise on the internet and the tools are organised below into their corresponding step of the DMAIC cycle.
Define (articulate the problem, objectives, resources, project, etc):
-Quality Circles
-Flow charts
Measure (collection of data, establish base lines for improvement):
-Pareto Charts
-Check Sheets
Analyse (identify, validate):
-Cause-and-effect diagrams
Improve (test and implement solutions):
-Brainstorming
Control (monitoring improvements and ensure continuing success):
-Control Charts for new Process