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Professional Development for Singapore Math (Upper Grades) Yeap Ban Har banhar@sg.marshallcavendish.com Pearl City, Hawaii Day 3 10 August 2011 Presentations are available at www.banhar.blogspot.com
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Professional Development for Singapore Math (Upper Grades) Day 3 Session 1 Video Study Problem-Solving Approach
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Students have learnt to add three one-digit numbers prior to this lesson. These are grade one students towards the end of the school year.
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Problem10 August 2011 How many fifths are there? 2×35
=(2×3) fifths
= 6 fifths
4×35
=(4×3) fifths
=12 fifths
4×35
= 4×35
= 125
The problem-solving approach can be used to teach new concepts or skills.
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Professional Development for Singapore Math (Upper Grades) Day 3 Session 2 Problem Solving & Drill-and-Practice
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Problem solving is the focus of Singapore Math.
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Problem solving can include drill-and-practice.
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Problem solving can include drill-and-practice.
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Observe how this problem is different from the last one even though numbers used are the same.
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12 58 – 12 = 46 46 ÷ 2 = 23 Natalie’s bag is 35 kg. Peter’s bag is 23 kg. Natalie 58 Peter Observe how this problem is different from the last one even though numbers used are the same.
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1st Day 2nd Day 4 3rd Day 4 4 4th Day 4 4 4 250 5th Day 4 4 4 4 6th Day 4 4 4 4 4 7th Day 4 4 4 4 4 4 8th Day 4 4 4 4 4 4 4
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5 1st Day 250 – 40 = 210 210 : 5 = ? 2nd Day 4 42 + 16 = ? 250 3rd Day 4 4 Rosa made 58 paper cranes on the last day. 4th Day 4 4 4 5th Day 4 4 4 4 Differentiation for struggling students
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