Lessons that could be learned (or practiced) with Legos:
-Math: calculating scale for models
-Art: architectural design
-Art: aesthetics--paying attention to how the eye is drawn to/along the design; as in photography: leading lines, fore/mid/background, rule of thirds, lighting...
-Art: color (and the use thereof--integral to aesthetics)
-Planning: layout, determing supplies needed
-Money-management: planning how to get and manage funds to increase lego supply and feed builds/Lego addiction
-Presentation/Public Speaking (if involved in a group, or a public display)
-Logistics of transporting displays safely
-Teamwork when involved in group displays, group builds, or group events
Of course this list would be longer if the Mindstorm/NXT was involved. :D
Which Lego Lessons can you add to the list??