SCIENTIFIC interest peaked at Kwun Tong Government Secondary School when it held its 11th open day last week. Taking Science Today as its theme, the two-day event kicked off with an opening ceremony presided over by principal Ella To Kwong Wai-yin and Kowloon education officer Tse Kam-shing. The school hall was turned into a mini-science research centre, showcasing the students' works while colourful display boards provided up-to-date information. Experimental projects, set up on the tables, invited visitors to take part. Works from sections such as integrated science, computers and astronomy competed for attention with displays from the physics, chemistry, biology, mathematics and environmental protection divisions. A light-sensing mouse robot, probing its way through a maze, was most eye-catching. The mouse was the brainchild of five second-formers who assembled the different components on a computer board. ''The mouse took us only three days to make, but we spent nearly three weeks constructing the maze,'' said Frankie Hui Chun-pong. At the computer corner, fourth-formers had fun printing out favourite cartoon figures which they designed for guests. Snoopy, Ding-dong, Totoro, Garfield, Mickey Mouse and Kerokeroppi were among those decorating a board. Fourth-former Chan Wing-cheong demonstrated a programme he wrote using mathematic curves on a computer. It featured both their properties and formulae. Meanwhile, the Astronomy Club stirred up interest with their question ''Is Anyone Out There?'', a topic which explored new dimensions. The 76-member strong club received a boost from the school recently when it purchased a $7,000 telescope. ''We can now go star-gazing on our twice yearly camps,'' said a club member. Guests also witnessed the magic of chemistry when students invited them to electroplate their own $2 coins. The Student Union chairman, sixth-former Thomas Chung Ho-yin, said that each year's open day saw an increase in the number and variety of exhibits.