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it's pretty clear that Google Wave is the online giant's social networking play, an attempt to wrestle away some usage share from services like Twitter and Facebook, obviously, but also with Microsoft's surprisingly popular SharePoint.

Waves can consist of any combination conversations (such as email and IM) and documents (collaboration). They provide for rich interaction via text, photos, videos, maps, and more, according to Google. From a usage standpoint, a wave is sort of like an email thread except that it can happen in real time (like IM), is always considered live, and participants can jump in and out of the conversation at any time. A playback capability allows participants to "rewind" the wave at any point and review what's already happened. Edits can be made to any part of the wave at any time, and it's always possible to see who did what. If you think of how an email thread and an IM conversation might be combined into a single entity, that's pretty much a wave.

It's based on HTML 5 and Google Web Toolkit

發現大學裡有很多門課學生的平均人數高達115人，於是，不到五分之一的老師知道學生名字；許多學生花錢買教科書，但是沒打開過；註冊課程，但是從來不上課；學生一年看8本書，但是會看2300個網站，1281頁Facebook個人資料；一學期寫42頁的報告夠多了吧！但是他們會寫上五百頁email。

Don Tapscott在研究中發現，如果採用雙向溝通，讓學生主動參與對話，以同儕討論代替照本宣科，效果就好得多。

康乃爾大學的Maria Terrell博士在美國國科會的補助下，實驗「Just in Time」教學。