Friday, August 14, 2026

Wednesday, August 12, 2026

Tuesday, August 11, 2026

Tuesday, August 4, 2026

Monday, July 27, 2026

P5, P6 money (H: Area Diagram)

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_____ my solution

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Friday, July 24, 2026

Advice to my students sitting for PSLE Mathematics

Try to follow these guidelines: - 1-mark question to be done within 1minute, 2-mark question within 2 mins, so as to eke out time for 3-mark and above questions - ⁠Apply RSVP for questions involving geometry and diagrams/tables/graphs/piecharts - ⁠Draw models or do story-boarding when encountering word problems with fraction, ratio, percentage

p5 p6 geometry

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Thursday, July 23, 2026

P6 numbers, multiples (H: area diagram)

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P5 order of operations

Most people get this wrong on the first try. 

     72 ÷ (8 + 4) × 6 − 9 

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Why is it so? 

One reason is based on the misconception that multiplication has higher ranking than division. 

Another is when people have only a partial understanding of order of operations. While they know that / and x have the same rank, and ought to operate from left to right, they are nevertheless affected by a phenomenon I coined as “the luring of numbers”: given that 12x6=72, and 72/72 will “conveniently” yield 1 for the result of the first 4 numbers (in turn resulting in a wrong final answer of -8) , when it ought to be 36 (where final answer should be 27)