원소 주기율표의 비밀: 세상 모든 물질에서 양자역학세계까지

From the universe to the elements, my interest and love for science, which began with Teacher Exo, is still growing stronger~ After taking several of your classes, I fell in love with the elements so much that I spent my days happily searching for and watching and listening to everything I could find about them: the element board game, element English lessons, element documentaries, and element science programs~ I was waiting for a new element class to open, and that's how I ended up signing up for this one! Thank you for remembering me, Gigigi, who was so incredibly happy right from the first class. I was too shy to answer, but I like and respect you so much that I can't stop talking about you. Thank you always! (He brought his notes from the previous element class and showed them to me how much more content about the same elements has been added in this class haha)

Teacher, today's class was really fun. I intended to leave a comment last time as well, but I didn't have the time. ^^ The carbine and water jet you taught us last time really stuck in my memory, and your explanations regarding fluorine and neon today really stuck with me. Maybe that's why I now want to go to the SBS filming you mentioned. Oh! And the part about fluorite was especially interesting. My hobby is collecting and buying rocks to look at under a microscope, so I think the 'fluorite' you taught us will be very interesting. I'm looking it up right now, and wow! It was even more beautiful than I expected. Also, learning that fluorine is used in frying pan coatings was a new piece of practical information for me. You answer your students' questions one by one with a smile; it is truly lovely to see. (I don't think I could do that.) I am the student body vice president, and I recently attended a leadership camp to receive training. It seems like all the "good leaders" the professors talk about are connected to you, Teacher! I love you.

My daughter is so incredibly disappointed that she only found out about Teacher Exo's classes now. Her handwriting is a mess from all the writing she does during class, isn't it? Haha. On weekends, she transfers everything into a colorful notebook. We are subscribed to two of Teacher Exo's classes, and on Tuesday and Wednesday nights, my daughter is excited from the morning onwards. I believe that the time spent asking and answering questions one by one is also a learning experience. Teacher Exo is always full of energy, even during the evening hours, just like it is the first class of the day! Looking at Teacher Exo's background and the quality of his classes, he is truly supporting the future of children. He is a precious person in this day and age. Thank you so, so much.