FROM multi-media and computer demonstrations and games to quizzes and a speed calculation contest, St Joseph's College students were busily engaged in activities during the Mathematics and Computer Week held recently. The annual event was organised jointly by the school's Mathematics Society and Electronics and Computer Society. The five members of the central organising committee - Augustine Chin Tian-hsi, Cyril Kwok Yat-fai, Allen Tin Ying-kit, Atkin Lui Sze-ming and Valence Chow Chung-mo - were delighted by the enthusiastic response. For the exhibition part, the multi-media demonstration showed the latest technology on simultaneous audio-visual display by connecting different medium like the Hi-Fi or even the digital drum band to the computer. The game stall was characterised by its originality because all the programmes of the computerised games such as Master-mind and Tick-tack-toe were written by the students. The Master-mind programme was a creation of third-former Allen Yuen who won the Computer Programme Contest held earlier by the two societies. The week also featured other simple mathematics games like ''Buttons'', ''Pyramid Creator'' and ''Triangle'' which were designed by the committee members. Committee chief director Augustine, a sixth-former, said the designs of the games were based on mathematics rules and principles they had learned from textbooks. Exhibition boards showing the development of mathematics symbols and calculation tools, the production of optical discs and the functioning of a computer network were also featured. Mathematics and computer books for Form 1 to 7 students and software on academic subjects like literature and geography were also displayed for sale. The academic week ended with an inter-class mathematics and computer quiz and a speed calculation contest open to Form 1 to 3 students.