Problem%20Solving

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Problem Solving
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What is a problem?
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Why teach problem solving?
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Excellent handout on Problem Solving Ideas PPDS
website
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24 Game

• Insert , -, x or / to make the following 24
• 7 9 5 8
• 3 2 2 6
• 4 5 6 9
• 3 5 7 6
• 5 7 7 6
• 2 6 5 5

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6 Circles (Levels 5 6)
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Word Problems
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Mathematical Language
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Language Number Operations
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Language Number Operations
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Strategies
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ROSE

• Read
• Organise
• Solve
• Evaluate

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Use of the Calculator
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Problem Solving with CalculatorsShow how you
would change these displays

• 2300 to 23
• 453 to 403
• 550 to 352
• 1010 to 5050
• 27 to 997
• 3500 to 70

• 100 to 2500
• 550 to 275
• 673 to 376
• 305 to 530
• 230 to 203
• 7500 to 75

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Activities

• Wipe Out!
• Type 35
• Wipe out the 5
• Type 35 again
• Now wipe out the 3

• Target
• You can only use the four keys 2, 3, x, to
  reach targets of 6, 8, 9, 16, 18, 36, 54.

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• Zap the Digit
• A digit is zapped when it is reduced to 0.
• You have to zap a 3 digit number in 3 inputs, a 4
  digit number in 4 inputs
• Type 185 zap 8 / zap 1 / zap 5

• The Broken Key
• We have to do the following sum but the number 9
  key is broken. How can it be worked out? List
  the possibilities.
• 85 97

http//www.amblesideprimary.com/ambleweb/mentalmat
hs/BigCalculator.html
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http//jenny.myzen.co.uk/calcs.htm
Further activities