My teaching is based on the belief that I believe each and every student has the potential to learn if they are afforded the opportunity to have a profound knowledge of the material being taught to them and if they are provided with the materials necessary for efficient learning.

When evaluating my effectiveness as a teacher, I look at the exam results of my students and listen to the feedback they provide. The following are my four criteria for determining whether or not I have been successful as a teacher:

Here are some of the most important comments made by parents. 

• E2STEM teachers help my child become more comfortable talking with family members and other people in public.

• I've seen my child become more responsible in his or her own learning.

• E2STEM helps students be more helpful around the house and do things I've never seen them do before, like cleaning the house or bedroom, washing the dishes, and so on.

• Before starting E2STEM, my child only worked alone, but now he or she can work in groups.

•  The E2STEM teachers help my child feel more comfortable taking on new tasks, like working on group projects, entering competitions, applying for scholarships, and so on.

• My child is now able to use a computer and speak English, which he/she was not able to do when he/she was in the countryside.

Click to see the feedback from Student's Parents from 2020–2023

• 2020-2021:  Term1, Term2, Term3

• 2021-2022: Term1, Term2

• 2022-2023: Term1

*Note: This feedback was received when we have parent-teacher meetings.

"This class is transforming me to be an independent learner. Teacher Tontan’s teaching method is giving resources to students and encouraging them to think first before explaining the answer right away, so It was hard to adapt to his teaching method, but it’s a really useful skill that I gained. In addition. We learned more than math here with the assignment of making math presentations with Latex and taking Coursera course on learning how to learn, etc. However, what I like most about his class is his openness to student’s suggestion on what he could do to help us get better at math or making math more interesting, especially in this Bac2 examination year."

- Yiyi Kim, Student from 2021 to 2023

"I'm Nho Tomaneath, and I was one of your high school students in grade 12. I've learned a lot from you over the past twelve months, both in terms of the maths concepts you teach and the life skills you share in reflection class. You taught us students beyond how to apply the formulas, in addition to how to understand the concept as well as the application of Math and a deeper knowledge of the subject in each lesson. The way you use examples from real life and real-life situations to demonstrate mathematical concepts helps me to visualize them. Furthermore, whenever I encounter a difficult maths problem, you are there to assist me in breaking the problem down into manageable parts, making it easier to focus on and solve. Also, I like how you rarely provide me a direct answer but instead give me a hint to tackle the problem, which helps me develop my critical thinking. Even more impressive is the fact that you never stop trying to teach a student like me who learns slowly and often fails quizzes and examinations, but after each exam, you encourage me to try again and try harder as well as give me feedback on my learning, making me believe that a teacher like you truly is a ray of hope for every student who strives to improve themselves day by day."

- Tomaneath Nhao, Student from 2021 to 2023

"I'm one of the students in T.Tontan Hak's class and I wanted to provide a review of my experience in his math class. I have found T.Tontan Hak's math class to be highly effective and beneficial for my learning. I used to think that math class was only for solving the exercises by using the formula that was already written in the textbook but that's not the case for T.Tontan class. T.Tontan Hak's teaching methods are highly engaging and interactive, which has made the learning process enjoyable and motivating. The most enjoyable part about his class is that he challenges us to think critically and apply mathematical concepts to real-world situations. This approach has not only helped me understand the relevance of math in everyday life but also improved my problem-solving skills and critical thinking abilities."

- Sreypich Leam, Student from 2021 to 2023

"My experience of learning math with you was unforgettable and also incredible. I have studied math with you for 2 years, your teaching method was very good, and very essential for all of the students because you helped us to engage more and explore more into the concept of mathematics. You have included the applications of applying math to real life, which is very interesting for us. Instead of applying the formula, you have guided us to learn more and understand more about how to use math in our daily lives. Learning math is not just applying formulas but also wanting to see how beautiful is it in different factors. Even, seeing the beauty of math in different ways you also bring us to know how to solve the exercises. I really love to way you write down how to solve the exercises for us and moreover, you help to guide us step by step to solve to exercises unlimited. The thing that I really love the most is you gave us tips to study math and how to overcome those difficult lessons. Your explanation is also very good, you have included an analysis of ways to make us easy to understand lessons. Especially, You always answer our questions when we have questions and try to use easy words to make it easy to understand and understand it for the long term. Your teaching also provides us with a lot of resources to do more research about math subjects.

Lastly, I would like to say you have been doing a very effective method of learning and teaching math, which has helped a lot of people including me as well. I have gained more understanding of the concept of math subjects and see it more not only in solving exercises but also see it in different ways of making new things by using the concepts of math. You have helped me a lot with my learning journey from not doing well to doing better. It is not the best but I  really appreciated it, you never say no when I am seeking help from you."

- Kimhorng Nam, Student from 2021 to 2023

"What I am interested in the most is that the teacher always asks us to find out the purpose of learning each lesson by using some questions like ‘ What is it? and How we can apply it in our daily lives. ’​​ Furthermore, the teacher always makes us think deeply about each lesson and exercise because when we think we can understand it rather than remembering it. Another thing is when we learn about formulas such as Integral or Derivative, the teacher asks us to find out how those formulas come from (Solving). Asking questions is the thing that teacher love the most. The teacher wants his students to ask when they don’t understand and he loves to answer it."

- Kimsur Rong, Student from 2021 to 2023

"I am one of the students in teacher Tontan's math class. Not to be over exaggerating, but his class made me improve my math skills tremendously. Before studying with teacher Tontan, my math was below average. I could do the basics but I'm not exceptionally good at it. I started studying math with teacher Tontan in 11th grade, during the Covid-19 pandemic. Even through online classes, he still managed to teach me well. We only got to study face-to-face in 12th grade, and his teaching only got better. I'd usually get bored in math classes because I can't understand a word my teacher says. However, in teacher Tontan's class, he makes us play warm-up games before he teaches his lessons. During class, he would start off by calling students up to answer the previous lesson's questions so that we would be engaged in the class, and also get a revision from the last class. Teacher Tontan would equip us with useful study materials. He also created a website to combine teaching aids like past exam papers or teaching videos so that it's easier for us to study. He always tries his best to make sure that all his students receive fair treatment, making sure everyone is comfortable with his teaching. I am forever grateful to teacher Tontan for letting me see the value in mathematics, piquing my interest in math, thus enabling me to pass this subject with good scores."

- Hengsolida Ung, Student from 2020 to 2022 

"In my high school memories, just throwback to the time that I studied with teacher Tontanat in grade 12. I will never forget that time in math class. That time was very special for me because In math class, the teacher provided us not only the formula for passing the exam but also tried to explain and ask questions about the concept to all students, explaining why everyone in the class should overthink rather than remember the lesson.  Some kind of activity in the math class that I enjoy the most is when the teacher puts the exercise on the whiteboard and creates another small group to do it. I don't get tired or bored too much in math class.  The last thing is that the teacher encouraged me to do an exercise, share it with my CL group, and discuss it. It made me improve more than before, and I got a good result for the grade 12 national exam. 

I'm very excited that I have learned a lot from you It is not only math but I can know the details and the application of it in daily use and it is very useful. When I begin the foundation year (University) I use tip learning how to learn that I learned it from e2stem that help me catch up the lesson easier.

Thank you so much for teaching me and I'm very very happy that can be your math student." 

- Chanvutha Hel, Student from 2020 to 2022

ចំពោះខ្ញុំក្នុងម៉ោងគណិតវិទ្យា ពិតជាមានចិត្តសប្បាយក្នុងការរៀននិងការទទួលយកបទពិសោធន៍ថ្មីៗជាពិសេសលោកគ្រូបានផ្ដល់នូវដំបូងមានល្អៗហើយតែងតែលើកទឹកចិត្តដល់សិស្សគ្រប់គ្នាឲ្យខិតខំរៀនសូត្រទោះពេលខ្លះលោកគ្រូប្រើពាក្យធ្ងន់បន្តិចប៉ុន្តែសុទ្ធតែជាពាក្យលើកទឹកចិត្តដើម្បីឲ្យយើងខិតខំរៀន។និងពេលខ្លះលោកគ្រូបាននាំលេងល្បែងដែលពាក់ព័ន្ធនឹងការមេរៀនដើម្បីអោយកាន់តែមានភាពទាក់ទាញបន្ថែម។ជាពិសេសគឺការបន្ថែមលំហាត់ជាច្រើនដើម្បីឲ្យយើងអនុវត្តនៅផ្ទះលោកគ្រូបានជួយដល់សិស្សដែលខ្សោយតាមរយៈការបន្ថែមម៉ោងខាងក្រៅ។ហើយការជួយទាំងនោះហើយទើបធ្វើឲ្យការសិក្សារបស់ខ្ញុំកាន់តែមានភាពរីកចម្រើនហើយក៏បានធ្វើអោយខ្ញុំប្រឡងជាប់គណិតវិទ្យានៅក្នុងការប្រឡងបាក់ឌុបផងដែរ។ជាចុងក្រោយខ្ញុំសូមអរគុណដល់លោកគ្រូដែលបានចំណាយពេលវេលារបស់លោកគ្រូទៅលើសិស្សគ្រប់រូប។

- Thu Long, Student from 2020 to 2022

ជាដំបូងខ្ញុំសូមអរគុណដល់លោកគ្រូយ៉ាងជ្រាវជ្រៅដែលបានជួយបង្ហាត់បង្រៀនគណិតវិទ្យាដល់ខ្ញុំអស់រយៈពេល២ឆ្នាំ ។ ឆ្លងតាមបទសោធន៍របស់ខ្ញុំដែលបានរៀនជាមួយលោកគ្រូកន្លងមក ៖

លោកគ្រូពិតជាមានការតកចិត្តទុកដាក់ចំពោះ ការបង្រៀនដល់សិស្សគ្រប់គ្នា លោកគ្រូមានការសង្កេតចំពោះសិស្សថា តើសិស្សណាដែលចាប់បានលឿននិងសិស្សណាដែលចាប់បានរាងយឺត ហើយលោកគ្រូបានយកចំណុចទាំងនោះទៅបង្រៀនជាសកម្មភាពផ្សេងៗក្នុងថ្នាក់ដើម្បីឲ្យសិស្សទាំងអស់មានចំណេះដឹងប្រហាក់ប្រហែលគ្នាទៅតាមជាក់ស្តែង។ មួយវិញទៀតលោកគ្រូពិតជាយកចិត្តទុកដាក់ទៅគ្រឹះរបស់សិស្សពីក្រោម ព្រោះគ្រឹះពិតជាសំខាន់នៅក្នុងគណិតវិទ្យា។ លោកគ្រូតែងតែប្រាប់ពីគោលបំណងក្នុងមេរៀននីមួយៗ និងការអនុវត្តន៍របស់មេរៀននោះដើម្បីឲ្យសិស្សដឹងថារៀនហើយយកទៅធ្វើអ្វីកើត ដើម្បីឲ្យមានគោលដៅក្នុងការរៀន កាត់បន្ថយការធុញ។ ជាចុងក្រោយខ្ញុំសូមអរគុណគ្រូម្តងទៀតនិងសូមជូនពរលោកគ្រូសុខភាពល្អ សំណាងល្អ ។

- Ly Lorn, Student from 2020 to 2022

"I have been a person who is really into math since I was younger. Moreover, when I joined teacher Tontan`class, I was extremely in love with math because he engaged the lesson with the real world, such as how to apply math concepts in real life and it made me more interested and also discovering the joy and power of mathematics. Additionally, I like the way he taught, such as how he explained the lesson step by step clearly and easy to understand. On the other hand, his math class taught me how to think logically, analytically, and creatively. It also helped me develop a sense of curiosity and wonder about the world around me. Furthermore, outside the class, he also enjoys answering questions whenever I have a question. In the class, he provided an assignment to complete as a group that we needed to do some research and most importantly we needed to explain in the whole class and it makes me remember the lesson for a long time."

- Veysean Kem, Student from 2020 to 2022

"Looking back to my math learning experience with T.Tontan's class, it was such a wonderful time that I will never forget. In his class, he never let any student feel alone because he always gave us tasks to do, learn, and help each other and he always checked on every student to make sure that they are understand. One thing that I remember about his class is when the school had been closed due to the Covid-19 lockdown and we had to study online, at that time he spent his time making a lot of videos explaining and breaking down every math concepts to make the lessons easier for students to understand. I sincerely appreciate his effort. The thing that I enjoyed most about his class is the group assignments. I gained a lot from completing those assignments including math concepts and applications, teamwork, collaboration, responsibility, research skill, and explaining skill that are beneficial to my university life."

- ChanRany Choeng, Student from 2020 to 2022

"My name is Hoeurn Manet. I used to be an 11th and 12th grade student of Teacher Hak Tontan. 2 years studying with him, I can say that he is an insightful teacher and facilitator who walks students through various learning strategies in order for students to genuinely understand the subject. He guides students to be independent in learning by participating in group discussion, doing research and will therefore gain a pure understanding of the lesson on their own. After that, he can add-on to complete what is missing. Teacher Tontak is also willing to spend extra time helping those who face academic struggles too to make sure that all students can go altogether from lesson to lesson. Mathematics might be a tough subject, but he conducted the lesson in a simple way to understand and also came up with engaging activities to energize the class too." 

- Manet Hoeurn, Students from 2020 to 2022

"Throughout my two-year journey of learning mathematics under the guidance of Teacher Ton Tan, I gained much understanding of the concept behind each lesson. This proved to be immensely beneficial when I got to university as it allowed me to understand the lessons in some of the classes that have mathematical concepts more quickly. From my experience learning with teacher Ton Tan, I noticed that he always tried to use different methods to teach and help us gain a deeper understanding of each lesson. One of my favorite activities from his class involved working as a team to comprehend the lesson and present our understanding to the entire class. This proved to help me a lot in understanding the lesson. Additionally, I gained valuable knowledge of LaTeX, a tool that, although not directly connected to mathematics, greatly assisted me in effortlessly writing mathematical equations and formulas in documents.

Furthermore, Teacher Ton Tan encouraged us to write reflections after each lesson. This reflection serves as a summary that facilitates future revision for exercises and exam preparation." 

- Tithsolyza Tep, Student from 2020 to 2022

តាមរយះការរៀនជាមួយលោកគ្រូកន្លងមកនេះខ្ញុំយល់ថាការបង្រៀនរបស់លោកគ្រូគឺល្អដោយរបៀបបង្រៀនរបស់លោកច្បាស់លាស់ល្អ មានលំដាប់លំដោយត្រឹមត្រូវ ហើយលោកគ្រូបានបង្រៀននូវគន្លឹះដោះស្រាយបញ្ហាជាច្រើនដូចជារបៀបនៃការរៀនគណិត របៀបនៃការដោះស្រាយលំហាត់ និងការចងចាំរូបមន្ត ។ ការបង្រៀនរបស់លោកគ្រូមួយៗច្បាស់ៗមិនលឿនពេកនោះទេធ្វើឲ្យសិស្សភាគច្រើនអាចចាប់បានរួមទាំងសិស្សដែលខ្សោយក៏ចាប់បានដែរ។មួយទៀតលោកគ្រូកមានទំនាក់ទំនង ល្អជាមួយសិស្សជាហេតុធ្វើឲ្យសិស្សដែលរៀនជាមួយលោកគ្រូឆាប់យល់ និងមានអារម្មណ៍ល្អពេលរៀនម៉ោងលោកគ្រូ ។ជាចុងក្រោយខ្ញុំសូមអរគុណលោកគ្រូដែលបានចំណាយពេលវេលាយ៉ាងយកចិត្តទុកដាក់បង្រៀនខ្ញុំកន្លងមក។​

- Nearsa Phan, Student from 2020 to 2022

លោកគ្រូជាមនុស្សម្នាក់ដែលអធ្យាស្រ័យ តែងតែផ្តល់ឪកាសនិងយកចិត្តទុកដាក់ខ្លាំងទៅដល់សិស្សខ្សោយ។ក្នុងនាមខ្ញុំជាសិស្សខ្សោយគណិតវិទ្យាមួយនាក់ពេលខ្លះក៍ខ្មាស់លោកគ្រូពេលខ្ញុំប្រឡងធ្លាក់ និងតែងតែអស់សង្ឃឹមគិតថាខ្លួនឯងធ្លាក់ហើយព្រោះពិន្ទុប្រឡងបានទាបខ្លាំង តែលោកគ្រូតែងតែមានវិធីសាស្រ្តបង្រៀនថ្មីៗដែលអាចជួយបានដូចជា ការកត់រូបមន្តអោយលោកគ្រូមុនចូលរៀន ការបង្កើតថ្នាក់ពិសេសសម្រាប់សិស្សខ្សោយដូចខ្ញុំ ការរៀនខ្លួនឯងតាមkhan academy ដំបូងខ្ញុំធ្វើតាមដើម្បីយកពិន្ទុបន្ថែមអោយខ្លួនឯងប៉ុណ្ណោះតែដល់ឥឡូវទើបដឹងថាការរៀនអនឡាញដោយខ្លួនឯងវាអាចជួយខ្ញុំបានប៉ុណ្ណានៅថ្នាក់សកលវិទ្យាល័យហើយខ្ញុំបានសាុំនិងចេះតិចនិចរៀនវគ្គអនឡាញនេះក៍ដោយសារតែការបានរៀនជាមួយលោកគ្រូ។ ជាចុងក្រោយគ្មានពាក្យអ្វីក្រៅពីអរគុណលោកគ្រូសម្រាប់ការបង្រៀន២ឆ្នាំនេះ និងជូនពរលោកគ្រូគ្រប់រឿងគ្រប់កិច្ចការទាំងអស់។

- Chanvipea Nin, Student from 2020 to 2022

"From my experiences while studying in your maths class for these past two years, what I really liked the most was that one time when you assigned a topic of the functions lesson to each CL and we had to conduct a teaching session one by one. I really learned a lot from peer teaching and class engagement was at its peak at that time. Another thing is that I gained a lot of understanding from the different materials that you have provided us, mostly the limit and integral exercises. Overall, I would say the class engagement such as when we debate about our different opinions and when we find the solutions to our problem together as a whole class contribute the most in my understanding." 

- Munineath Thira, Student from 2020 to 2022

សម្រាប់ខ្ញុំ អ្វីដែលខ្ញុំចូលចិត្តនៅពេលដែលខ្ញុំរៀនជាមួយលោកគ្រូនោះគឺ critical thinking ទៅលើលំហាត់ពីព្រោះការរៀនដោយធ្វើcritical thinkingនេះវា ធ្វើឲខ្ញុំយល់ពីលំហាត់ចឹងទៅខ្ញុំអត់ខ្លាចនៅពេលដែល លោកគ្រូបន្លំប្រធាន។ ហើយចំណុចមួយទៀតដែលខ្ញុំគិតថាវាលេចធ្លោនោះគឺ ការរៀនគណិតតាមkhan academy ព្រោះ ការនៅពេលដែលខ្ញុំធ្វើself studyតាមkhan academyខ្ញុំបានយល់ដឹងពាក្យគន្លឹះEnglish ដែលប្រើសម្រាប់គណិតវិទ្យាច្រើន ចឹងទៅនៅពេលលំហាត់ខ្លះអត់មានបង្រៀនជាភាសាខ្មែរ ខ្ញុំអាចsearchជា Englishបាន។

- Bunnaroth Keo, Student from 2020 to 2022