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2. Glossary of mathematical jargon - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_mathematical...

   projection. A projection is, roughly, a map from some space or object to another that omits some information on the object or space. For example, R 2 → R , ( x , y ) ↦ x {\displaystyle \mathbb {R} ^ {2}\to \mathbb {R} , (x,y)\mapsto x} is a projection and its restriction to a graph of a function, say, is also a projection.

3. Quizlet - Wikipedia

   en.wikipedia.org/wiki/Quizlet

   Quizlet is a multi-national American company that provides tools for studying and learning. [ 1] Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [ 2] and released to the public in January 2007. [ 3] Quizlet's primary products include digital flash cards, matching games, practice electronic ...

4. Glossary of linear algebra - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_linear_algebra

   A directed quantity, one with both magnitude and direction. 2. An element of a vector space. [ 13] A set, whose elements can be added together, and multiplied by elements of a field (this is scalar multiplication ); the set must be an abelian group under addition, and the scalar multiplication must be a linear map.

5. Wordly Wise 3000 - Wikipedia

   en.wikipedia.org/wiki/Wordly_Wise_3000

   Wordly Wise 3000 is an American series of workbooks published by Educators Publishing Service for the teaching of spelling and vocabulary. Books A through C (for grades 2–4) introduce 300 words and books 1–9 (grades 4–12) 3,000 words, all with exercises. [ 1] As well as spelling and meaning, the books cover the etymology and stories ...

6. Glossary of mathematical symbols - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_mathematical...

   Glossary of mathematical symbols. A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various ...

7. The best educational apps to stay sharp throughout the school ...

   www.engadget.com/best-educational-apps-170055442...

   Khan Academy is the big name in online education, for various reasons. It offers instruction in a wide variety of subjects, including math, science and even test prep for exams like the SAT and ...