5.2 Knowledge building
"the meaning that people assign to certrain things is not static, but is constructed and constantly re-constructed through negotiation within community of practice" (Star & wenger 1999)

Important: give "power" and "control" and  do without technical possibilities

Username on all pages -> support the social context in work

To use a "thinking platform"  force the student to metathinking
- not only the content, but also the learning-process.
"New knowledge is not assimilated, but contructed and transformes through raising and solving problems" (Kilgyte)