TWIG Chemistry MCQ Masterclass with Mr Donnell Koh! Mr Donnell Koh strives not only to help his students get good chemistry grades, but more importantly, inspire them to discover the amazing wonders of Chemistry! Watch Mr Donnell Koh discuss questions on Alkanes. The Alkanes tutorial covers the essence of the concepts and the application tested in A-Level Chemistry exams.
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About TWIG Learning Center Twig Learning Center is the premier preferred choice for A Level, IP and O Level Chemistry tuition in Singapore. The founder, Mr Donnell Koh, is an ex-lecturer from Raffles Junior College and Meridian Junior College with more than 20 years of teaching experience and has coached thousands of students to score distinctions or greatly improved their grades.