Mr. Guo is a teacher from Xi'an. He asked his students to hand in their homework through a QR code (二维码). "We spent an hour or two in class learning how to generate (使产生) the codes, and in the end everything gets easier," said Guo. "When students finish the homework, they keep it on WeChat (微信). Then, each student makes his own QR code and gives it to me. So, I can check their work everywhere using my computer or telephone" .
Guo's students like the new way and think it is interesting. "We are living in the information age. Many students like to work with computers, which makes learning more fun." said Tingting, a student of Guo's.
However, some parents are worried. They are afraid that their children will spend too much time on computers and less time communicating with teachers. But in fact, it's unnecessary. Students still need to look up information in books and write it down when they do their homework. They only use the code when they hand in their work, which doesn't take them too much time. Also, for teachers, it allows them to check the students' work at any time. And it's also an easy way to share homework with other students.
