This paper presents various methods of computer aided experiments in science education and their integration in Web environment as HTML documents. The concept of the virtual laboratory suitable for science teaching at the secondary school level is described. Some essentials and advantages of this approach are presented in the paper. They are illustrated with a concrete example of the course Integrated Science through Experiments that has been developed as a product of the European funded project Computerised Laboratory in Science and Technology Teaching within the Leonardo da Vinci II programme. The paper outlines the structure of the course accessible to the user via a tabular system of links.