The level of critical thinking skills of Omani tertiary-level students is an area that has received only a limited amount of investigative attention. This study employed an adapted version of the Cornell Class-Reasoning Test, Form X to assess the critical thinking skills of students in the humanities- and science-based colleges of Sultan Qaboos…

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.…