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유성찬
Hero
Reviews
900
Hello. I am Teacher John. I am a medical expert currently enrolled in graduate medical school. I teach biological and medical knowledge to children in English. I will share with you the "biological knowledge" I learned at the School of Biomedical Engineering at Korea University and the "medical knowledge" I acquired at graduate medical school. Basic medical knowledge that you can learn while having fun! Let's explore together!
Experience & Activities
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Currently attending St. George's University Medical School
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Graduated from the Department of Biomedical Engineering, Korea University
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Graduated from South Pasadena High School (LA)
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Graduated from Beijing Korean International School, elementary and middle school
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Many tutoring sessions for elementary school boys
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Passed USMLE Step 2 (First Attempt)
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Passing USMLE Step 1 (First Attempt)
900 Parent Reviews
송**
12years old
2025. 8. 23 PM 11:21:58
(100%영어) 미국교과서로 배우는 5학년 수학
This is my child's favorite class. If time permitted, we would have taken the teacher's other classes as well, but it is a shame that our schedules don't align because we are abroad. You always communicate with the children with such energy and warmth. Today, with school starting soon, I asked my child if they would be able to solve descriptive math problems in English. They replied that in the past, they couldn't even dare to attempt them and solved them knowing they would get them wrong, but now they have gained some confidence and feel they can solve them well, so they are no longer afraid. We would like to take other classes as well, but since they are mostly based on Korean standards, we cannot take them; however, we plan to take any subject during next summer vacation.
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송**
12years old
2025. 7. 21 PM 11:20:43
(100%영어) 미국교과서로 배우는 5학년 수학
My child dislikes studying, but listens to the teacher's lessons very attentively. They work hard to solve math problems during class. My child used to be good at math, but after moving abroad, they couldn't keep up with school lessons, especially the descriptive questions. Due to scheduling conflicts, my child is in 4th grade but is taking 5th-grade classes, and the teacher explains things clearly and in an easy-to-understand way. Thanks to this, my child is able to preview 5th-grade material and review 3rd and 4th-grade material as well. I think it is really hard to find a class like this anywhere else.
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현**
14years old
2025. 6. 13 AM 9:45:47
(100%영어) 미국 교과서로 배우는 생물 Biology
First of all, the teacher is truly wonderful. Out of the dozens of classes I’ve taken with various native speakers and Zoom sessions, I would like to say that this teacher is by far the best. Although it is a 100% English class, the teacher pronounces words clearly for the children to hear, and explains difficult terms so well at their level, helping them to firmly grasp the concepts. It is a shame that my child is shy about speaking, but I am satisfied with the amount of input they are getting. I am reminded once again that there is a reason why the reviews for Kookoog classes are so good. I will subscribe according to my schedule. -Review from a mom of two who has been with Kookoog since birth-
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