1. MAP102 Problem Solving
Heuristics in Primary Mathematics
www.banhar.blogspot.com
Dr Yeap Ban Har
Marshall Cavendish Institute
yeapbanhar@gmail.com
Venue: Singapore Teachers’ Union
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.
4. Assuming Sam did not spend his money:
Jason had $837 - $360 - $270
Jason
= $207 at first.
Edward had $360 at
Edward
first.
Heuristics
Draw 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.
15. We used 9 sticks to make three different
arrangements with four such triangles.
The least number of sticks used is 6!
16.
17.
18. 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.