Nope not google wave,
The concept is old but I thought I would do a bit of reflectiveness on the subject for my own benefit. In the old classroom when a student would learn a bit of information, the wave of retention would begin. Reinforcement would start the process again, in the old days and still to now this would be achieved via homework. This would carry on until either it dissipated or the barrier broke and it entered the long term memory.
Nowadays people are thinking about how they can support the student to create their own wave. Formally this occurs using groupwork or now socially.using social network sites. We can support this by creating social learning tools or by creating social learning areas (SEA) within our learning centres.
E-learning can be seen to strengthen the wave by creating bursts at different intervals.
Constructivism occurs in a similar method, by planting the idea or item of knowledge within the subject the item can grow and change according to how the subject views and changes much like a tree with branches.