It’s five o’clock in the afternoon. The last class is over. Some students are going home and some students are going to the dining room.

The football players are taking some exercise on the playground. Some students are swimming in the pool. Others are warming up near the pool. Many students love music. The members of the school band are practising in the garden. In the computer room, there are some students working on the computers. In the library, some students are doing some reading.

After-school activities are interesting.

Mr. Guo is a teacher from Xi’ an. He asked his students to hand in their homework through a QR code. “We spent about an hour 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. Then, each student makes his QR code and gives it to me. So I can check their work anywhere using my computer or telephone.”

The students can send the QR codes to Mr. Guo by email, QQ and WeChat. When Goo scans (扫描) his students’ QR codes, their homework appears on his home.ie finds that their homework becomes more creative (有创新性的) , with many pictures, music and even videos.

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 Cuo’s. “The paper is not easy to keep, but the code is easy to keep and share.” Guo said, “It is good to try to use something new in education (教育). Education itself is a kind of creation. I don’t want my students to fall behind the times.”

However, some parents are worried. They are afraid that their children will spend too much time on computers and less time communicating (交流) 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 codes when they hand in their work, which doesn’t take them too much time. Also for teachers, it allows them to check to students’ work at any time. And it’s also an easy way to share homework with other students.