Impact of a pre-laboratory organic-extraction simulation on comprehension and attitudes of undergraduate chemistry students

摘要: Many students perform extraction experiments without connecting relevant molecular features to corresponding macroscopic features. Two versions of an Organic Extraction Simulation, one with text captions and the other narration accompanying animation, were developed based on a cognitive view multimedia learning. This instructional module was intended help visualize concepts at level, connect these procedure. Chemistry I (N = 106) randomly assigned use two simulation (with text or narration). They completed spatial ability test, pre-test post-test organic concepts. Post-test scores for both significantly higher than scores. MANCOVA score covariate indicated that version had significant effect lower-order cognitive questions (p 0.036), while spatial correlated higher-order 0.004). Students in group more positive attitudes towards effectiveness did those group.