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  2. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a / b or โ  โ , where a and b are both integers. [9] As with other fractions, the denominator (b) cannot be zero. Examples include โ  1 2 โ , โˆ’ โ  8 5 โ , โ  โˆ’8 5 โ , and โ  8 โˆ’5 โ .

  3. English Braille - Wikipedia

    en.wikipedia.org/wiki/English_Braille

    English Braille, also known as Grade 2 Braille, [1] is the braille alphabet used for English. It consists of around 250 letters (phonograms), numerals, punctuation, formatting marks, contractions, and abbreviations (logograms). Some English Braille letters, such as โ ก ch , [2] correspond to more than one letter in print.

  4. Investigations in Numbers, Data, and Space - Wikipedia

    en.wikipedia.org/wiki/Investigations_in_Numbers...

    Investigations was developed between 1990 and 1998. It was just one of a number of reform mathematics curricula initially funded by a National Science Foundation grant. The goals of the project raised opposition to the curriculum from critics (both parents and mathematics teachers) who objected to the emphasis on conceptual learning instead of instruction in more recognized specific methods ...

  5. Divisibility rule - Wikipedia

    en.wikipedia.org/wiki/Divisibility_rule

    One must multiply the leftmost digit of the original number by 3, add the next digit, take the remainder when divided by 7, and continue from the beginning: multiply by 3, add the next digit, etc. For example, the number 371: 3ร—3 + 7 = 16 remainder 2, and 2ร—3 + 1 = 7. This method can be used to find the remainder of division by 7.

  6. Educational stage - Wikipedia

    en.wikipedia.org/wiki/Educational_stage

    In some areas in England, a three-tier system of education is used, in which students pass through three stages: First school / Lower school (Reception to Year 3/4), Middle school (Year 4/5 to Year 7/8) and finally High or Upper School (Year 8/9โ€“Year 13) Key stage. Year. Final exam.

  7. Fourth grade - Wikipedia

    en.wikipedia.org/wiki/Fourth_grade

    In math, kids learn about place value up to the millions, prime and composite numbers, multiplying 2-digit and 3-digit numbers, long division, fractions, decimals, the metric system, and geometry. In Social Studies, they learn about geography skills such as map reading and longitude and latitude, state history, and early American history.

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