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Sample Question #3 High school graduating class is made upof 674 students. There are 298 more boys than girls. Howmany girls are in the class?• Algebraic method using a variable, x to represent number of girls. Asthere are 298 more boys than girls, The number of boys will be x + 298.Total number of boys and girls will be• x + (x + 298)• Since the total number of students graduating is 674, we can write theequation; x + (x + 298) = 674. The solution of the equation will be:• x = 188• We can draw a Comparison model to represent the situation and usingalgebra method,boysgirlsx+ 298x 2986741/1/201211/19/2011
Sample Problem #3 Variation 2Total number of boys and girls is 674. The number of boys canbe expressed as 674 – x.x+298674xFrom the above pictorial model, students will see thedifference between (674 – x) and x is 298.Therefore, the equation representing this situation is(674 – x) - x = 298The solution of the equation isx =188.11/19/2011
Page 1 and 2: Presenters:Dr. Umesh NagarkatteLavo
Page 3 and 4: Background -• Singapore Mathemati
Page 7: 11/19/2011Mathematics Framework•
Page 12: AttitudesAttitudes here refers to t
Page 16: Comparison ModelAddition and Subtra
Page 24 and 25: Example Problem #1-FractionPart-Who
Page 26 and 27: Example #1-RatioComparison Method
Page 28 and 29: Example #3-RatioPart-Whole Method
Page 30 and 31: Example #2- PercentagesPart- Whole
Page 32 and 33: Model Method & ProblemSolving• Mo
Page 34 and 35: Example problem #2. A store gives 1
Page 36 and 37: Part-Whole Model in Problem solving
Page 38 and 39: Comparison Model cont’d• The pi
Page 40 and 41: Example problem #1. A couch cost 5
Page 44 and 45: Example Problem #4Question: Smith,
Page 46 and 47: Conclusion cont’dWordproblemProbl
Page 48 and 49: Conclusion cont’d• We conscious
Page 50: Conclusion cont’d• Moreover, th

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