My Teaching Subject(s)O level - E Maths , A Maths
A level - Maths , H3 Maths
IB / IGCSE - Mathematics, Mathematical Studies
Diploma / Degree - Business Admin, Mathematics, Applied Mathematics, Statistics, Electrical Engineering , Mechanical Engineering , Computer Science
Experience
Mathematics graduate (First-Class Honours, National University of Singapore) with 6 years of teaching experience spanning secondary, pre-university (including both the Integrated Programme and O-Level β JC pathways), and undergraduate levels. Prior roles include Teaching Assistant at NUS (2020β2023) for Discrete Mathematics, Calculus, and Linear Algebra, and Lecturer at Temasek Polytechnic (2024β2026) for engineering mathematics modules.
Currently runs an independent one-on-one tutoring practice covering Secondary through Undergraduate Mathematics.
Teaching approach centres on building genuine conceptual understanding rather than rote memorisation β using clear analogies, structured worksheets, and worked examples to help students see the "why" behind each method, not just the "how." Sessions are tailored to each student's syllabus and pace, with regular feedback and support extending beyond scheduled lesson time.
2024β2026: Temasek Polytechnic (TP)
Lecturer
Coordinate and teach engineering mathematics modules (e.g. precalculus, calculus, differential equations, vector calculus), see teaching certificate here and review quotes here.
2020β2023: National University of Singapore (NUS)
Teaching Assistant
Teach introductory undergraduate mathematics modules (e.g. discrete mathematics, calculus, linear algebra), see review quotes here.
Publications:
Asymptotic Optimality of Thompson Sampling for Risk-Averse Bandits with Sub-Gaussian Rewards, Joel Q. L. Chang, 2026
A Unifying Theory of Thompson Sampling for Continuous Risk-Averse Bandits, Joel Q. L. Chang and Vincent Y. F. Tan, AAAI, 2022
Linear Algebra: A Balance of Visualisation and Abstraction, P. E. Thang, Devandhira W. Wangsa, T. L. Kho, Joel Q. L. Chang, 2024
Reformulating
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Limits in a Pedagogically Cleaner Way, Joel Q. L. Chang, 2023
Thompson Sampling for Gaussian Entropic Risk Bandits, M. L. Ang, Eloise Y. Y. Lim, and Joel Q. L. Chang, 2021
Risk-Constrained Thompson Sampling for CVaR Bandits, Joel Q. L. Chang, Qiuyu Zhu, and Vincent Y. F. Tan, 2020
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