Describes the development of a chemistry lecture course called CHEMnet that is available via the internet and optimizes multimedia learning environments. Investigates the use and efficiency of multimedia teaching and learning software with CHEMnet. Discusses the structure and features of CHEMnet along with numbers and characteristics of its use.…

Many topics in chemistry are difficult for learners to understand, including symmetry. Reasons for this difficulty include its multi-level content, instructional methodologies utilized, and learner variables. This study examined the effect of initial instructional modality and prior knowledge on learning of point group symmetry. Forty-four…