This paper aims to explore how the use of lesson study approach with a constructivist framework could enhance Year 9 students' conceptions of pressure specifically on the topic of manometer reading in determining gas pressure. A diagnostic test was first administered to three Year 10 classes to help teachers identify student difficulties in…

The law of conservation of mass can be counterintuitive for most students because they often think the mass of a substance is related to its physical state. As a result, students may hold a number of alternative conceptions related to this concept, including, for example, the believe that gas has no mass, that solids have greater mass than fluids,…