Determined differences between lecture-demonstration and small-group laboratory approaches on students' (N=74) chemistry achievement and attitudes toward science. Findings indicate that students taught by the laboratory approach achieved better on immediate/delayed posttests than students taught by lecture-demonstration method. More desirable…

Investigated is the effect of organization and accuracy of detail in instructional aids on the achievement of college students (N=54) in a freshman chemistry lecture course. It is indicated that aids may impede learning by decreasing students' involvement in auditory and semantic encoding during lectures. (Author/DS)

Compared the laboratory method versus lecture method for Nigerian grade eight students (n=210). High achievers in both groups had identical achievement, but the low achievers in the laboratory sections performed better than students receiving the lectures. Females receiving lectures performed better than the males receiving lectures. (PR)