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MAP102 Mathematical Problem Solving Heuristics

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MAP102 Mathematical Problem Solving Heuristics

  1. 1. MAP102 Problem Solving Heuristics in Primary Mathematics www.banhar.blogspot.comDr Yeap Ban HarMarshall Cavendish Instituteyeapbanhar@gmail.comVenue: Singapore Teachers’ Union
  2. 2. In today’s class we will use the following heuristics:• Act it out• Draw a diagram• Solve a simpler problem• Solve part of a problem• Draw a table• Look for a pattern• Use algebra
  3. 3. Assuming Sam did not spend his money: Jason had $837 - $360 - $270 Jason = $207 at first. Edward had $360 at Edward first. HeuristicsDraw a Diagram Sam Sam had $270 at first. $837 - $648 = $189 $189 x 3 = $570 - $3 = $567 $837 - $567 = $270 Jason had $207 at first.
  4. 4. Jason $189 x 3 = $567EdwardSam
  5. 5. JasonEdwardSam
  6. 6. Heuristics Act It OutWe found three different waysto make a rectangle using threetangram pieces.This is the act it out heuristics.
  7. 7. 42, 24 2 4 HeuristicsLook for a Pattern The difference between 42 and 24 is 18.
  8. 8. HeuristicsAct It Out
  9. 9. We used 9 sticks to make three differentarrangements with four such triangles.The least number of sticks used is 6!
  10. 10. We also solved these which were raised by participants Each symbol stands for a number.  +  +  +  +  + = 40  x  = 40 What number does  stand for? 11 trees are in a road. The distance between each tree is equal. The distance between the 1st tree and 4th tree is 18m. Find the distance between the 1st tree and last tree.
  11. 11. Try these with your kids!

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