Perhaps a physical model of the PM triangle would help people to grasp the meaning. So let's build an adjustable Iron Triangle out of something. It needs to be inexpensive, made from common items, and build-able in 20 minutes.
- 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.