INSTRUCTING STUDENTS how to launch a rocket made from a water bottle in the playground may not be difficult for an experienced tutor, but for teacher-for-a-day Alex Yu Kwan-tin, it was chaos. Kwan-tin is only 16. He tried hard to maintain his dignity as a teacher, but his students for the day are actually classmates and not much older than he is. However, Kwan-tin was not alone. All Form Four and Form Six students at SKH Bishop Mok Sau Tseng Secondary School in Tai Po got a taste of what it is like being a teacher for about five hours on their annual Student-Teachers' Day last week. Students formed groups to teach, while the teachers served as advisers. Having designed the lessons and prepared teaching materials on their own, Kwan-tin found teachers were 'stronger' than he thought. The popularity of the water-rocket activity caused some chaos among the students, resulting in Kwan-tin having to shout to maintain order. 'Teaching is great fun but it's not an easy thing,' he said after his day with two Form One classes. 'Teachers need to prepare for lessons, as well as monitor class discipline.' Students Winnie Wai Wing-yu and Tsoi Hiu-kwan gave high marks to the 'teachers'. 'They taught very well and put in a lot of effort. They explained everything in detail and asked us whether we understood or not,' they said. Other than teaching subjects already in the curriculum, the young 'teachers' covered topics including magic, telescope making, balloon twisting, singing and cake-making. Assistant principal Kam Chi-fun said the programme, now in its sixth year, allows students to have a deeper understanding of what it means to be a teacher. It also helps to boost their confidence. Form Four 'teacher' David Wong Ting-kwan, who taught Chinese rhetoric using Canto-pop songs, said he was lucky to have six classmates as co-teachers as there were 'many things to take care of'. '[Teachers] have to teach, as well as manage the computer and make sure their students understand,' he said. 'They are working under high pressure. It's a laborious job and I don't think I'll be a teacher in future.' Sixth former Leung Hei-man taught food nutrition and food decoration with two classmates. Having tutored a group of active students this year, Hei-man understood that the attentiveness and responsiveness of students was vital in creating a good learning and teaching environment. 'I'll try to be more responsive to teachers,' she told Young Post.