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| | Issue Date | Title | Author(s) |
|  | 2006 | Calculator use in primary school mathematics: A Singapore perspective | Koay, Phong Lee |
| | Nov-1998 | Communication skills of pre-service elementary school teachers | Koay, Phong Lee; Ng, Swee Fong |
| | Nov-1996 | Do Singapore pupils apply common sense knowledge in solving realistic mathematics problems? | Koay, Phong Lee; Foong, Pui Yee |
| | 2001 | An exploratory analysis of current pedagogical practices in primary mathematics classrooms | Chang, Agnes Shook Cheong; Kaur, Berinderjeet ; Koay, Phong Lee; Lee, Ngan Hoe |
| | 2012 | An exploratory study on low attainers in primary mathematics | Kaur, Berinderjeet ; Koay, Phong Lee; Foong, Pui Yee; Chang, Suo Hui; Masura Ghani |
|  | Aug-2010 | Fraction division in the Singapore mathematics curriculum | Koay, Phong Lee; Ho, Siew Yin |
| | Feb-2008 | Integrating new assessment strategies into mathematics classrooms: An exploratory study in Singapore primary and secondary schools | Fan, Lianghuo; Quek, Khiok Seng; Koay, Phong Lee; Ng, Juliana Donna Chye Huat; Pereira-Mendoza, Lionel; Yeo, Shu Mei; Tan-Foo, Kum Fong; Teo, Soh Wah; Zhu, Yan |
| | 2001 | International project on mathematical attainment | Kaur, Berinderjeet ; Koay, Phong Lee; Yap, Sook Fwe; Burghes, David |
| | 1998 | The knowledge of percent of pre-service teachers | Koay, Phong Lee |
| | Dec-1999 | My best mathematics teacher: Perceptions of Singapore and Brunei pupils | Kaur, Berinderjeet ; Koay, Phong Lee; Jamilah Mohd Yusof; Zaitun Mohd Taha; Wong, Khoon Yoong |
| | 1999 | Primary school pupils’ perception on studying mathematics | Kaur, Berinderjeet ; Koay, Phong Lee; Jamilah Mohd Yusof; Zaitun Mohd Taha; Wong, Khoon Yoong |
| | 1997 | School word problems and stereotyped thinking | Foong, Pui Yee; Koay, Phong Lee |
| | Sep-2000 | Singapore pupils mathematical knowledge at the end of first school year | Kaur, Berinderjeet ; Koay, Phong Lee; Yap, Sook Fwe |
| | Dec-1999 | Singapore pupils’ knowledge of numbers at the beginning of first school year | Kaur, Berinderjeet ; Koay, Phong Lee; Yap, Sook Fwe; Burghes, David |
| | Nov-2003 | Some findings on the performance of Primary Four pupils from the IPMA study | Koay, Phong Lee; Yap, Sook Fwe; Kaur, Berinderjeet |
| | 1996 | Teachers' concerns about the revised mathematics curriculum | Foong, Pui Yee; Yap, Sook Fwe; Koay, Phong Lee |
| | 2017 | Teaching and learning with concrete-pictorial-abstract sequence: A proposed model | Chang, Suo Hui; Lee, Ngan Hoe ; Koay, Phong Lee |
| | Sep-2000 | The thinking skills of primary one pupils: An exploratory study | Koay, Phong Lee; Kaur, Berinderjeet ; Yap, Sook Fwe |
| | 1996 | The use of mathematical games in teaching primary mathematics | Koay, Phong Lee |
