21st Century Skills & 21st Century Learning

Recently, there has been heightened interest in 21st century learning. What is 21st century learning? How to operationalize it? Where are the promising practices?

21st Century Common Language

One of the topics surrounding 21st Century skills and learning seems to be in coming up with a common definition for "it". In your own words please describe what 21st Century Skills and Learning mean to you when you hear it or say it.

How would you describe a 21st Century Learning Environment?