Learning support and academic achievement among Malaysian adolescents: The mediating role of student engagement ZM Jelas, N Azman, H Zulnaidi, NA Ahmad Learning Environments Research 19 (2), 221-240, 2016 | 79 | 2016 |

The effect of using GeoGebra on conceptual and procedural knowledge of high school mathematics students H Zulnaidi, E Zakaria Asian Social Science 8 (11), 102, 2012 | 72 | 2012 |

The effectiveness of Realistic Mathematics Education approach: The role of mathematical representation as mediator between mathematical belief and problem solving P Yuanita, H Zulnaidi, E Zakaria PloS one 13 (9), e0204847, 2018 | 68 | 2018 |

The effectiveness of the GeoGebra software: The intermediary role of procedural knowledge on students’ conceptual knowledge and their achievement in mathematics H Zulnaidi, SNAS Zamri Eurasia Journal of Mathematics, Science and Technology Education 13 (6 …, 2017 | 68 | 2017 |

Effect of use of GeoGebra on achievement of high school mathematics students H Zulnaidi, E Oktavika, R Hidayat Education and Information Technologies 25 (1), 51-72, 2020 | 39 | 2020 |

Hutkemri.(2014). Students’ engagement by age and gender: A cross-sectional study in Malaysia R Amir, A Saleha, ZM Jelas, AR Ahmad Middle-East J. Sci. Res 21 (10), 1886-1892, 0 | 34 | |

Roles of metacognition and achievement goals in mathematical modeling competency: A structural equation modeling analysis R Hidayat, H Zulnaidi, SNA Syed Zamri PloS one 13 (11), e0206211, 2018 | 28 | 2018 |

Roles of self-directed learning and social networking sites in lifelong learning. UKM Salleh, H Zulnaidi, SSA Rahim, AR Bin Zakaria, R Hidayat International Journal of Instruction 12 (4), 167-182, 2019 | 24 | 2019 |

Impact of using GeoGebra on students’ conceptual and procedural knowledge of limit function EZ Hutkemri Mediterranean Journal of Social Sciences 5 (23), 873, 2014 | 23 | 2014 |

The effect of GeoGebra on students' conceptual and procedural knowledge of function E Zakaria Indian Journal of Science and Technology 5 (12), 3802-3808, 2012 | 21 | 2012 |

A comparative study of school environment for students' skills development in Malaysia and Indonesia KM Sobri, F Hanum, H Zulnaidi, AR Ahmad Kasetsart Journal of Social Sciences 40 (1), 149-154, 2019 | 20 | 2019 |

Influence of School Culture and Classroom Environment in Improving Soft Skills amongst Secondary Schoolers. AR Ahmad, FP Chew, H Zulnaidi, KM Sobri International Journal of Instruction 12 (2), 259-274, 2019 | 16 | 2019 |

Enhancing Science Achievement Utilising an Integrated STEM Approach. AA Yaki, RM Saat, RV Sathasivam, H Zulnaidi Malaysian Journal of Learning and Instruction 16 (1), 181-205, 2019 | 14 | 2019 |

Exploratory and confirmatory factor analysis of achievement goals for Indonesian students in mathematics education programmes R Hidayat, SNAS Zamri, H Zulnaidi EURASIA Journal of Mathematics, Science and Technology Education 14 (12), em1648, 2018 | 13 | 2018 |

In-Service Training for Chemistry Teachers' Proficiency: The Intermediary Effect of Collaboration Based on Teaching Experience. J Copriady, H Zulnaidi, M Alimin International Journal of Instruction 11 (4), 749-760, 2018 | 13 | 2018 |

The Effect of Information Mapping Strategy on Mathematics Conceptual Knowledge of Junior High School Students. H Zulnaidi, E Zakaria Online Submission 7 (1), 26-31, 2010 | 12 | 2010 |

Classroom Practice and the Quality of Teaching: Where a Nation is Going MY Tee, M Samuel, NM Nor, RV Sathasivam, H Zulnaidi Journal of International and Comparative Education (JICE), 17-33, 2018 | 8 | 2018 |

Meta-cognitive behaviour and mathematical modelling competency: mediating effect of performance goals R Hidayat, SNAS Zamri, H Zulnaidi, P Yuanita Heliyon 6 (4), e03800, 2020 | 7 | 2020 |

THE EFFECT OF GEOGEBRA ON STUDENTS’MISCONCEPTIONS OF LIMIT FUNCTION TOPIC H Zulnaidi, E Oktavika JuKu: Jurnal Kurikulum & Pengajaran Asia Pasifik 6 (1), 1-6, 2018 | 7 | 2018 |

Does mastery of goal components mediate the relationship between metacognition and mathematical modelling competency? R Hidayat, SNAS Zamri, H Zulnaidi Educational Sciences: Theory & Practice 18 (3), 2018 | 5 | 2018 |