NSMI Core Elective on Challenging Problems
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NSMI Core Elective on Challenging Problems

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Yeap Ban Har gave the Closing Keynote on Day 1 of the three-day institute.

Yeap Ban Har gave the Closing Keynote on Day 1 of the three-day institute.

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NSMI Core Elective on Challenging Problems Presentation Transcript

  • 1. Core Elective 1 / 2Bar Modelsin Challenging Word Problems from Singapore SchoolsYeap Ban HarSlides are available atwww.banhar.blogspot.com
  • 2. key focus of singaporemathematics
  • 3. problem solving Learning Standards
  • 4. Escuela de Guetamala, Chile
  • 5. Pathlight School, Singapore
  • 6. 3x – 2 = 8Globe Academy, London
  • 7. Lesson  June 18, 2012Open Public Lesson, Hawaii
  • 8. Kim 2 Before After 3 Kim m m-2John 2 John m+3 m+3+2 ? John had 7 more sweets than Kim in the end.
  • 9. 4 units = 10012 units = 3 x 100 = 300Its capacity is 300 ml.
  • 10. 5 units = 550 1 units = 110May 4 units = 440Chris 1 part = 55Chris must give May 165 book marks. 3 parts = 3 x 55 = 150 + 15 = 165
  • 11. 48 minutes8 units = 48 minutes1 units = 48 minutes  8 = 6 minutes 15 units = 6 minutes x 15 = 90 minutes Ben took 9 minutes to complete the test.
  • 12. 7Peili PeiliNurul Nurul 7After … 7 Before …
  • 13. 60 + 21 = 81 7 9 units = 81 Peili Nurul 1 unit = 81  9 = 9 7(a) $9 x 2 - $7 =$18 - $7 = $11 7(b) $9 x 5 - $7 x 2 = $45 - $14 = $31 Before …
  • 14. thinkingproblem solving conceptualunderstanding