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Wave一種即時的e-mail，意思就是：當你在回覆從系統中所收到的訊息（或

Wave一種即時的e-mail，意思就是：當你在回覆從系統中所收到的訊息（或稱「wave」，波浪）時，則對方可馬上看到你在打的字。

你可在訊息的任何地方做回應，你也可在一般e-mail中進行，不過在Wave中，你的回應很容易被看見，因為這個應用會在回應的文字加入彩色方塊，並嵌入作者的照片。

Wave extensions are a way to augment the functionality of waves and the wave client. Currently, the Wave API supports the following extensions: Robots: Robots are applications which can be added to waves as automated wave participants. Robot extensions commonly automate tasks, but can also participate in the wave as a participant, interacting with the conversation based on their capabilities. For more information, see the Wave Robots API Overview and Developer Guide. Gadgets: Gadget extensions provide a shared program which runs within the wave, and to which all participants have access. For more information, see the Wave Gadgets API Developer Guide.

Each extension has a specific use case, noted below: A robot is an automated participant on a wave. Robots are programs which run on an application server and can modify state within the wave itself. A robot can read the contents of a wave in which it participates, modify the wave's contents, add or remove participants, and create new blips and new waves. Robots perform actions in response to events. For example, a robot might publish the contents of a wave to a public blog site and update the wave with user comments. A gadget is a small application that runs within a client. The gadget is owned by the wave, and all participants on a wave share the same gadget state. The only events a gadget responds to are changes to its own state object, and changes in the wave's participants (for example, participants joining or leaving the wave). The gadget has no influence over the wave itself. Wave gadgets typically aren't full blown applications, but small add-ons that improve certain types of conversations. For example, a wave might include a sudoku gadget that lets the wave participants compete to see who can solve the puzzle first.

he Google Wave interface is divided essentially into four boxes: Navigation, Contacts, Inbox, and your current Wave.

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。