-Teachers, students, and trainees matched to your friends on the number of individual teacher's random images then get out in front of students, and the students select one picture 1 picture then q.
- Teachers match students with practice questions and answers about the number of persons in a given image. The teacher randomly call students out of class. Students choose one image and one image and then post it.
- students for matching with friends practice ask and answer about the individuals according to the picture given. Then the teacher called out random students in front of the class. And let students choose different 1 image image, then bring the questions.