teaching fractio ns Yeap Ban Har National Institute of Education Nanyang Technological University Singapore [email protected] Slides are available for download from www.banhar.blogspot.com or www.mmepdpm.pbworks.com
teachingfractions
Yeap Ban HarNational Institute of Education
Nanyang Technological UniversitySingapore
Slides are available for download fromwww.banhar.blogspot.com or www.mmepdpm.pbworks.com
Grade 1 materials, consolidated over four years build the foundation for Grade 5 and Grade 6 materials.
GradeWhole Number
DivisionDecimal & Fraction
Division1 Sharing /
Partitive DivisionGrouping /
Quotitive Division2 12 boys ÷ 4
3 15 boys ÷ 451 boys ÷ 3
133 boys ÷ 74 1248 boys ÷ 6
15 kg ÷ 40.24 ÷ 4
5
6
7 Everything else
teachingfractions
4154
15 3
3
2
4
33
4
3
2
1
How many thirds are there in 1 whole?
How many thirds are there in 1 whole?
How many thirds are there in 2 wholes?
teachingfractions
How many thirds are there in 1 whole?
How many thirds are there in 2 wholes?
3
11
3
12
How many thirds are there in ?3
21
Grade 4 Grade 6
How many thirds are there in ?6
5
3
1
6
5
teachingfractions
3
21
How many 2 thirds are there in 1
whole?
3
21
This is a 2-thirds.
This is half of 2-thirds.
teachingfractions
6
1
2
1
How many sixths are there in 1 half?
How many sixths are there in 1
whole? 1 half?
6
1
2
1
66
11
3
1
6
5
extensiveuse of visuals
in textbooksdeveloping visualization
developingvisualizationHow Can I Help My Students See It?
Adding like fractions, sum less than 1
Adding unlike, related fractions, sum less than 1
Adding like and related fractions, sum more than 1
Adding unlike fractions, sum less than 1
Adding unlike fractions, sum more than 1
Adding mixed numbers
spiralcurriculum
featuresofsingaporemath
keyusing fractions as a case study
conceptualunderstanding
concrete pictorial abstract
mathematicalvariations
thank you
www.banhar.blogspot.comfor addresses of websites and blogs of various
aspects of singapore math
teachingfractions