|Agile Tetrahedron Model|
- Straws - the bendable kind - multi-colored.
I used 3 yellow straws for the flexible corner pieces. Cutting the straw just about 2cm beyond the flex on each side. I cut the straw at an angle. This makes assemble easier, as you must crimp and slide this piece into other straws. The taper makes this easier.
|Cutting diagram & finished triangle|
|One side of the adjustable triangle.|
|All the pieces of the triangle|
|The 3 angles|
You now have an adjustable Project Manage Iron Triangle. Label the sides and start playing with it. Enjoy your new found understanding of the constraints of projects.
If you need an explanation of the power of the Iron Triangle and its limitations as a model for software development listen to the Agile in 3 Minutes: episode 21 Predict.