Pearl City Hawaii Lower Grades 11 Aug

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Professional Development for Singapore Math (Lower Grades)

Yeap Ban [email protected]

Pearl City, Hawaii11 August 2011

Jalan Besar PCF Kindergarten, Singapore


Day 1 Session 1Open Lesson Grade 1/2

AddingCPA Approach

Manny has 5 cookies. Lasene has 7 cookies.Trisdyn has 6 cookies.

Nanakuli Elementary School, Hawaii, USA


Day 1 Session 2Counting

Differentiating for Thinking

This is the rationale stated in Singapore Mathematics curriculum document.

“an excellent vehiclefor the developmentand improvement

of a person’sintellectual competence”


Day 1 Session 3Counting, Adding, Subtracting

CPA Approach

Earlybird Kindergarten Mathematics

Jalan Besar PCF Kindergarten, Singapore

concrete

pictorial

abstractThe CPA Approach is one of the fundamentals of Singapore Math.

























Day 1 Session 4Focus on Thinking

4 5

Ist Digit Final Answer

5 ?

9 81

6 54

3 27

Method 1It does not matter what the second digit is.If it is 0 : 60 – 6If it is 1 : 61 – 7 which should be the same because 61 is 1 more than 60, and 7 is also 1 more than 6.


5 x 9 ?

9 x 9 81

6 x 9 54

3 x 9 27

Method 2Multiply the first digit by 9

Method 3Multiply the first digit by 10 and then …


5 x 10 = 50 ?

9 x 10 = 90 81

6 x 10 = 60 54

3 x 10 = 30 27


5 4?

9 8?

6 5?

3 2?

Method 3The first digit in the final answer is related to the first digit. Also the digits in the final answer sum up to 9.

Education

Pearl City Hawaii Lower Grades 11 Aug