Dry Laboratories in Science Education : Computer-based Practical Work

Abstract

Practical (laboratory) work in science education has traditionally been used to allow students to rediscover already known concepts and ideas, to demonstrate concepts taught in the classroom or, in the case of inquirybased science curricula, to teach concepts. Often, these laboratory practicals do not achieve their goals and may even confuse or demotivate students. It is not that using ‘wet’ practicals is intrinsically wrong; rather, it is that they are often used for the wrong reasons. They do have a place in science curricula - for the conveyance of tacit knowledge that can only be achieved in the laboratory setting. In our view, their use should be restricted to that. Non-laboratory practicals ('dry labs'), and especially multimedia practicals, tend to be used for completely different reasons. They are best used to help students achieve specific cognitive skills (such as analysis, synthesis and evaluation) needed to practice science and to carry out scientific inquiry. This article sketches the problems associated with the use of dry laboratories in science education, presents design considerations for the use of such practicals in science education and presents examples of innovative non-traditional practicals.