Under Mr Koh’s tutelage, I was eventually able to attain my desired grades at the A levels. His notes, organised revision plans, as well as his dedication and commitment to each of his students was a huge contributing factor to my confidence and improvement in chemistry. He is motivating and encouraging even till the very end of my A level journey, whether its after major school exams, or between my A level papers when I felt close to giving up. Thank you Mr Koh !!! 🙂

Mr Koh is a very patient tutor who explains chemistry concepts so clearly and simply that even the most complicated concepts become very easy to comprehend. His notes, especially the summary booklets, are very concise and helpful. He knows which question types are popular for the exams and exposes us to these questions, which makes it significantly easier to study for chemistry in the knowledge of what to focus on. Would highly recommend Mr Koh as a chem tutor!

Mr Koh is really patient and approachable towards all students of different calibre. He adjusts well to meet each student’s needs by monitoring us during class to see if we were able to keep up/understood concepts he had covered. His notes are thorough and well organised, very useful for getting a big picture of everything before exams. Most importantly I enjoyed my lessons and saw a vast improvement in my grades:)

Never thought that the day of me passing chemistry would come as I was constantly getting an S for all my CTs. However, with Mr Koh’s dedication (he would meet me before/after every class to clarify my doubts) and patience, I managed to improve to a B in prelims. Even when I sent text messages to Mr Koh regarding chemistry questions, Mr Koh would reply me extremely promptly. Joining Twig for chemistry was really one of the best decisions I made in my A level journey. Once again, thank you Mr Koh!

Mr Koh is a highly approachable and engaging teacher! He is able to teach concepts effectively and provides many resources that have been useful in my A Level journey. I also found consultations before and after classes especially helpful and I’m really thankful to Mr Koh for being so patient! Through Twig, I’ve been able to improve in Chemistry ever since joining at the end of Year 4 & I’ve always enjoyed the lessons there:- )

I joined Twig after JC1, and Mr Koh helped me clarify any questions that I had very promptly and taught the Chemistry topics in a very clear and detailed manner. This helped me improve my Chemistry grade significantly. I wouldn’t have been able to get an A for H2 Chem A Levels without Mr Koh’s help!

I joined twig when I was getting really desperate at my chem and within one lesson I was able to understand miles more than I could understand from my own school notes! Mr Koh really simplified the concepts into something that was much easier for me to understand which gave me a really strong foundation in being able to keep up with the school curriculum! his notes are short, sweet, and straight to the point, often including some extra facts so that it’ll feel less boring and questions relating to a specific part that was taught. I like the flow and structure of his lessons, which is teaching a small section, then applying what we learned to a question straight after. it may seem very long n tedious but it was very efficient because it helped a lot in retaining the information better. I joined towards the end of j1 but I saw an immediate improvement in my first test in j2 where I finally got an A, which I’ve also consistently maintained throughout j2 and in A levels 🙂 nearer exam season and A-level prep, he has focused worksheets on revision and materials which have a mix of both challenging and moderate questions which I found were very useful! esp for school exams! his guidebooks and his little tips and tricks on how to understand the concepts, and answer questions were very very helpful. he was also very approachable and I’m glad I had an amazing teacher who I could go to anytime I needed help with my chemistry questions. if you’re looking for good chemistry tuition come to twig! it really was very worth it for me and I took away a lot 🙂 every week was very fun and interesting! thank you Mr Koh for inspiring me to love Chemistry again !

Chem is a subject that is easy to struggle in as there are many concepts that are difficult to visualize. I remember falling behind in several chapters and performing badly for my common test in J1 as I couldn’t grasp a fundamental concept that was taught earlier in the year. Thankfully, my chemistry grades were salvaged once I came under Mr Koh’s tutelage as he patiently explained everything, making sure that I understood it to the finest detail. His teaching methodology and lesson plans are also carefully designed to cater to the needs of students of different learning abilities, making it easy for us students to follow through his classes. His dedication and passion in ensuring that his students truly understand what he has taught is shown in everything he does – staying until 11pm just to answer queries that his students may have, bringing theory into life by conducting mini experiments in class and tirelessly compiling difficult but common questions that are tested for each type of exam be it common tests, prelims, or the A levels. Mr Koh has certainly been one of the best tutors I’ve ever had, and I would definitely recommend him to my friends and juniors!

Mr Koh is a dedicated and excellent teacher!! My results improved drastically after I joined his lessons. He’s very approachable and never hesitates to answer any of our questions! I strongly recommend attending his lessons 🙂