An investigation of students understandings of acids and bases using concept maps, multiple-choice tests, and clinical interviews is described. The methodology and resulting analysis are illustrated with two abbreviated case studies selected from the study. Discussion of concept mapping points to how it starkly represents gaps in the understanding…

In an effort to contribute information for science teachers and curriculum developers in Maine, this study generated base line data on 4th, 8th, and 11th grade students' knowledge of marine science and natural resources principles in relation to the Gulf of Maine. Five concept maps representing 15 major content principles were developed. Two…