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  2. iCivics - Wikipedia

    en.wikipedia.org/wiki/ICivics

    iCivics, Inc. (formerly Our Courts) is a 501(c)(3) non-profit organization in the United States that provides educational online games and lesson plans to promote civics education and encourage students to become active citizens.

  3. Twenty-One Card Trick - Wikipedia

    en.wikipedia.org/wiki/Twenty-One_Card_Trick

    The Twenty-One Card Trick, also known as the 11th card trick or three column trick, is a simple self-working card trick that uses basic mathematics to reveal the user's selected card. The game uses a selection of 21 cards out of a standard deck. These are shuffled and the player selects one at random.

  4. Big Ideas Learning - Wikipedia

    en.wikipedia.org/wiki/Big_Ideas_Learning

    In 2014, Big Ideas Learning debuted the Big Ideas Math Algebra 1, Geometry, and Algebra 2 Common Core high school mathematics curriculum. The company also announced that it will be releasing the Big Ideas Math Course 1, Course 2, and Course 3 Common Core integrated high school mathematics curriculum in the spring of 2015.

  5. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    This principle, foundational for all mathematics, was first elaborated for geometry, and was systematized by Euclid around 300 BC in his book Elements. [ 21 ] [ 22 ] The resulting Euclidean geometry is the study of shapes and their arrangements constructed from lines, planes and circles in the Euclidean plane ( plane geometry ) and the three ...

  6. Martin Gardner - Wikipedia

    en.wikipedia.org/wiki/Martin_Gardner

    Martin Gardner (October 21, 1914 – May 22, 2010) was an American popular mathematics and popular science writer with interests also encompassing magic, scientific skepticism, micromagic, philosophy, religion, and literature – especially the writings of Lewis Carroll, L. Frank Baum, and G. K. Chesterton.

  7. List of My Three Sons episodes - Wikipedia

    en.wikipedia.org/wiki/List_of_My_Three_Sons_episodes

    Chip is getting tired of hearing about all the tricks that Bismarck the dog can do. Robbie calls Tramp dumb when the dog knocks over a science project he was working on. Steve tells Chip that even though Tramp can't do tricks, he's still a friend. Even Chips friends Freddie Ryan and Dianne Ferguson have dogs that can do tricks.

  8. Euclid's Elements - Wikipedia

    en.wikipedia.org/wiki/Euclid's_Elements

    The Elements (Ancient Greek: Στοιχεῖα Stoikheîa) is a mathematical treatise consisting of 13 books attributed to the ancient Greek mathematician Euclid c. 300 BC. It is a collection of definitions, postulates, propositions (theorems and constructions), and mathematical proofs of the propositions.

  9. Gerrymandering - Wikipedia

    en.wikipedia.org/wiki/Gerrymandering

    Districts called arrondissements were used in the Third Republic and under the Fifth Republic they are called circonscriptions. During the Third Republic, some reforms of arrondissements, which were also used for administrative purposes, were largely suspected to have been arranged to favor the kingmaker in the National Assembly , the Radical ...