extended essay

基本解釋

The three core requirements are: (1) the student needs to write up an extended essay to investigate a topic of interest;
三個(gè)核心要求是：（1）學(xué)生必須撰寫(xiě)一篇長(zhǎng)文章，探討感興趣的主題；
blog.sina.com.cn
With regards to DP core requirements, a DP Course Candidate may register for more than one extended essay in the same session.
至于DP核心需求，DP課程候選人可以注冊(cè)多個(gè)擴(kuò)展的文章在同一個(gè)會(huì)話。
This essay tries to express the extended meanings of negative prefixes, such as "negative, opposite, and reverse" etc.
從英語(yǔ)派生法的構(gòu)詞手法上來(lái)解釋英語(yǔ)“否定、反對(duì)、逆轉(zhuǎn)”等前綴及它們的一些延伸意義的用法。

For the techie on your list, try In the Beginning Was the Command Line by Neal Stephenson, his extended essay on the relationship between culture and the computer.
NPR: The Least Material of Material Gifts