Among three levels of chemical representation, the sub-microscopic level is the most difficult to learn by students. To solve the problem, it is assumed that the concept of the discontinuous nature of matter or particle concept should be mastered initially by students before they learn sub-microscopic representations of further chemical phenomena.…

This paper describes an empirical study of fun, usability, and learning in educational software. Twenty five children aged 7 and 8 from an English primary school participated. The study involved three software products that were designed to prepare children for government initiated science tests. Pre and post tests were used to measure the…