Inquiry is defined as a set of interrelated processes by which scientists and students pose questions about the
natural world and investigate phenomena; in doing so, students acquire knowledge and develop a rich understanding
of concepts (NRC, 1996). Educators assert that knowledge is enhanced when students are actively engaged in the
learning process and when this is coupled with guidance and scaffolding from the instructor, students are able to
gain a better understanding of science concepts (Correiro, Griffin & Hart, 2008; Martin-Hansen, 2005; Lindquist,
2001). The present study provided empirical evidence to this assertion by producing research data that shows IBL
improved students’ conceptual understanding. On quantitative grounds, it was found that scientifically acceptable
responses provided by students were increased after having involved in IBL activities. In qualitative sense, it is
possible to say that pre instructional misconceptions concerning matter either were decreased or diminished after the
teaching intervention.