You can just listen to the bad pronunciation and such. But the rest are all overall problems. ppt: It's just for copy and paste. This is just for copying and pasting during your own lecture. It's not the ppt that the students see. Of course, it wouldn't be a problem if you explained it well. But you really can't explain it. The font size is too small. You put the ppt and eclipse half on the screen that the students see, and you type the code while looking at the ppt. The font size is already small. It's annoying every time I look at it. I don't think it's right to charge 70,000-80,000 won for this level of quality.ㅠ Oh my money~