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One Right Way? What Culturally Diverse Students Can Teach Us About Math

One Right Way? What Culturally Diverse Students Can Teach Us About Math. Barbara Acosta, M.S. Ed. Elementary and Middle Schools Technical Assistance Center (EMSTAC). Elementary and Middle Schools Technical Assistance Center. www.emstac.org. What can our students teach us about math?.

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One Right Way? What Culturally Diverse Students Can Teach Us About Math

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  1. One Right Way? What Culturally Diverse Students Can Teach Us About Math Barbara Acosta, M.S. Ed. Elementary and Middle Schools Technical Assistance Center (EMSTAC)

  2. Elementary and Middle Schools Technical Assistance Center www.emstac.org

  3. What can our students teach us about math?

  4. Ways Math May Differ Across Cultures • Money and Measurement • Symbols • Language • Algorithms

  5. MONEY • Money is money, right? • But wouldn’t you rather count cents, dimes and quarters than schillings? • How much is 250 ¢?

  6. What the heck is a decameter, anyway? MEASUREMENT

  7. SYMBOLS AND NOTATIONS

  8. THE LANGUAGE OF MATH

  9. Yí Er San Si Wu Liu Qi Ba Jiu Shi Learn to Count in Chinese

  10. 10 11 12 This makes Place Value a cinch, too 31

  11. Now Let’s Add 31 + 24 = ? 31 + 20 = 51 51 + 4 = 55

  12. How about subtraction? 13 – 9 = (10 + 3) - 9 = (10 - 9) + 3 = 4

  13. Addition Subtraction Multiplication Division ALGORITHMS

  14. Addition around the world 1 2 3 +31718 5 0 1 Mexico Britain 1 9 4 + 3 91 1 2 3 3 Ireland

  15. “Scratch Methods” Phillippines Japan - 9 7 3 4 - - 7 9 - +3 5 2 4 5

  16. Subtracting in Italian 832 – 226 = ? 610

  17. Russian “Peasant” Multiplication 230 x 17 = 3910

  18. Practice!

  19. Why can’t I start on the left? South Africa Belize

  20. Let’s divide!

  21. Regla de Tres (Latin America)

  22. What will you do with all this new knowledge?

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