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  2. Evan Hunter - Wikipedia

    en.wikipedia.org/wiki/Evan_Hunter

    Evan Hunter. Evan Hunter (born Salvatore Albert Lombino; October 15, 1926 – July 6, 2005) was an American author of crime and mystery fiction. He is best known as the author of 87th Precinct novels, published under the pen name Ed McBain, which are considered staples of police procedural genre. His other notable works include The Blackboard ...

  3. Google Classroom - Wikipedia

    en.wikipedia.org/wiki/Google_Classroom

    Website. classroom .google .com. Google Classroom is a free blended learning platform developed by Google for educational institutions that aims to simplify creating, distributing, and grading assignments. The primary purpose of Google Classroom is to streamline the process of sharing files between teachers and students. [3]

  4. Khan Academy - Wikipedia

    en.wikipedia.org/wiki/Khan_Academy

    Khan Academy is an American non-profit [3] educational organization created in 2006 by Sal Khan. [1] Its goal is to create a set of online tools that help educate students. [4] The organization produces short video lessons. [5] Its website also includes supplementary practice exercises and materials for educators.

  5. Bulletin board - Wikipedia

    en.wikipedia.org/wiki/Bulletin_board

    Bulletin boards are often made of a material such as cork to facilitate addition and removal of messages, as well as a writing surface such as blackboard or whiteboard. A bulletin board which combines a pinboard (corkboard) and writing surface is known as a combination bulletin board. Bulletin boards can also be entirely in the digital domain ...

  6. Alstonia scholaris - Wikipedia

    en.wikipedia.org/wiki/Alstonia_scholaris

    Alstonia scholaris, commonly called blackboard tree, scholar tree, milkwood or devil's tree in English, is an evergreen tropical tree in the Dogbane Family (Apocynaceae). It is native to southern China, tropical Asia (mainly the Indian subcontinent and Southeast Asia ) and Australasia , where it is a common ornamental plant .

  7. Plus and minus signs - Wikipedia

    en.wikipedia.org/wiki/Plus_and_minus_signs

    The plus sign ( +) and the minus sign ( −) are mathematical symbols used to denote positive and negative functions, respectively. In addition, + represents the operation of addition, which results in a sum, while − represents subtraction, resulting in a difference. [1] Their use has been extended to many other meanings, more or less analogous.

  8. Lockheed SR-71 Blackbird - Wikipedia

    en.wikipedia.org/wiki/Lockheed_SR-71_Blackbird

    NASA (historical) Number built. 32. Developed from. Lockheed A-12. The Lockheed SR-71 " Blackbird " is a retired long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed and manufactured by the American aerospace company Lockheed Corporation. [N 1] The SR-71 has several nicknames, including "Blackbird" and "Habu".

  9. United States Army Prime Power School - Wikipedia

    en.wikipedia.org/wiki/United_States_Army_Prime...

    The U.S. Army Prime Power Production Specialist Course is located at Fort Leonard Wood, Missouri. This year long training program trains Active, Army Reserve soldiers, and Navy Seabees. Upon graduation Army personnel are awarded MOS 12P20 and Navy personnel awarded NEC 5633. Students earn over 30 semester hours of college credit while attaining ...