Teachers' readiness in implementing science, technology, engineering and mathematics (STEM) education from the cognitive, affective and behavioural aspects. - Abdul Halim Abdullah; Mohd Hilmi Hamzah; Raja Haffizah Soffia Raja Hussin; Umar Haiyat Abdul Kohar; Sharifah Nurarfah S. Abd Rahman; Juhazren Junaidi (TALE, 2017)

Development of The "ThinkHOTS" Software Based on Thinking Maps To Increase Higher-Order Thinking Skills. - Abdul Halim Abdullah; Mohd Hilmi Hamzah; Norasykin Mohd Zaid; Amira Fatiha Baharudin; Umar Haiyat Abdul Kohar; Sharifah Nurarfah S. Abd Rahman; Siti Hajar Mohd Amin (ICEED, 2018)

Arts and Science Stream Students' Mathematical Problem Solving Strategies and Perspectives. - Abdul Halim Abdullah; Mahani Mokhtar; Sharifah Nurarfah S. Abd Rahman; Yeow Lih Wen; Nor Hasniza Ibrahim; Marlina Ali; Dayana Farzeeha Binti Ali (ICEED, 2018)

Behaviours of Students When Solving the Assessment of Programme for International Student Assessment (PISA) Mathematical Problems. - Abdul Halim Abdullah; Sharifah Nurarfah S. Abd Rahman; Mahani Mokhtar; Syafiqah Mohd Hairon; Nor Hasniza Ibrahim; Hon-Mun Soh (ICEED, 2018)

Development of Mobile Application for The Concept of Pattern Recognition in Computational Thinking for Mathematics Subject. - Abdul Halim Abdullah; Muhammad Asnawi Othman; Norulhuda Ismail; Sharifah Nurarfah S. Abd Rahman; Mahani Mokhtar; Norasykin Mohd Zaid (TALE, 2019)

Mirror-mirror on the Wall, Which Teachers Use Educational Technology in Mathematics Classroom-Malaysians or South Koreans? - Abdul Halim Abdullah; Bomi Shin; Nurul Farhana Jumaat; Umar Haiyat Abdul Kohar; Zakiah Mohamad Ashari; Sharifah Nurarfah S. Abd Rahman (TALE, 2019)

The Effects of an Inductive Reasoning Learning Strategy Assisted by the GeoGebra Software on Students' Motivation for the Functional Graph II Topic. - Abdul Halim Abdullah; Noor Suhaily Binti Misrom; Umar Haiyat Abdul Kohar; Mohd Hilmi Hamzah; Zakiah Mohamad Ashari; Dayana Farzeeha Binti Ali; Norazrena Abu Samah; Lokman Mohd Tahir; Sharifah Nurarfah S. Abd Rahman (IEEE Access, 2020)

Does the Use of Smart Board Increase Students' Higher Order Thinking Skills (HOTS)? - Abdul Halim Abdullah; Hon-Mun Soh; Mahani Mokhtar; Mohd Hilmi Hamzah; Zakiah Mohamad Ashari; Dayana Farzeeha Binti Ali; Norazrena Abu Samah; Nurul Farhana Jumaat; Nor Hasniza Ibrahim; Johari Surif; Sharifah Nurarfah S. Abd Rahman (IEEE Access, 2021)

DOES Sketchup Make Improve Students' Visual-Spatial Skills? - Abdul Halim Abdullah; Rohani Abd Wahab; Mahani Mokhtar; Noor Azean Atan; Noor Dayana Abd Halim; Johari Surif; Norasykin Mohd Zaid; Zakiah Mohamad Ashari; Nor Hasniza Ibrahim; Umar Haiyat Abdul Kohar; Mohd Hilmi Hamzah; Sharifah Nurarfah S. Abd Rahman (IEEE Access, 2022)

Enhancing Form-One Students' Higher Order Thinking Skills (HOTS) Through the GeoGebra-Assisted Contextual Learning Strategy. - Abdul Halim Abdullah; Sharifah Nurarfah S. Abd Rahman; Nor Hasniza Ibrahim; Mohd Hilmi Hamzah (EDUCON, 2025)