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  2. Skip counting - Wikipedia

    en.wikipedia.org/wiki/Skip_counting

    Skip counting is a mathematics technique taught as a kind of multiplication in reform mathematics textbooks such as TERC. In older textbooks, this technique is called counting by twos (threes, fours, etc.). In skip counting by twos, a person can count to 10 by only naming every other even number: 2, 4, 6, 8, 10. [1]

  3. Pennsylvania System of School Assessment - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_System_of...

    The Pennsylvania System of School Assessment (PSSA) is a standardized test administered in public schools in the state of Pennsylvania.Students in grades 3-8 are assessed in English language arts skills and mathematics.

  4. Counting - Wikipedia

    en.wikipedia.org/wiki/Counting

    Number blocks, which can be used for counting. Counting is the process of determining the number of elements of a finite set of objects; that is, determining the size of a set. . The traditional way of counting consists of continually increasing a (mental or spoken) counter by a unit for every element of the set, in some order, while marking (or displacing) those elements to avoid visiting the ...

  5. Mathematics education - Wikipedia

    en.wikipedia.org/wiki/Mathematics_education

    Discovery-based mathematics is at the forefront of the Canadian "math wars" debate with many criticizing it for declining math scores. New Math: a method of teaching mathematics which focuses on abstract concepts such as set theory, functions, and bases other than ten. Adopted in the US as a response to the challenge of early Soviet technical ...

  6. Sieve of Eratosthenes - Wikipedia

    en.wikipedia.org/wiki/Sieve_of_Eratosthenes

    An incremental formulation of the sieve [2] generates primes indefinitely (i.e., without an upper bound) by interleaving the generation of primes with the generation of their multiples (so that primes can be found in gaps between the multiples), where the multiples of each prime p are generated directly by counting up from the square of the ...

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