The Beer-Lambert law is a fundamental relationship in chemistry that helps connect macroscopic experimental observations (i.e., the amount of light exiting a solution sample) to a symbolic model composed of system-level parameters (e.g., concentration values). Despite the wide use of the Beer-Lambert law in the undergraduate chemistry curriculum…

Visual analysis is the primary method of evaluating data in single-subject research. Few studies have evaluated interventions to teach visual analysis skills. The purpose of this study was to evaluate systematic instruction, delivered using computer-based intervention or a recorded lecture, on identifying changes in slope and level in AB graphs.…

The purpose of this quasi-experimental study was to explore how seventh graders in a suburban school in the United States developed argumentation skills and science knowledge in a project-based learning environment that incorporated a graph-oriented, computer-assisted application. A total of 54 students (three classes) comprised this treatment…

Visual analysis is the primary method of analyzing data in single-subject methodology, which is the predominant research method used in the fields of applied behavior analysis and special education. Previous research on the reliability of visual analysis suggests that judges often disagree about what constitutes an intervention effect. Considering…

In mathematic courses, construction of some concepts by the students in a meaningful way may be complicated. In such circumstances, to embody the concepts application of the required technologies may reinforce learning process. Onset of learning process over daily life events of the student's environment may lure their attention and may…

The case-based computerized laboratory (CCL) is a chemistry learning environment that integrates computerized experiments with emphasis on scientific inquiry and comprehension of case studies. The research objective was to investigate chemical understanding and graphing skills of high school honors students via bidirectional visual and textual…

Studies the effects of varying levels of interactivity on the learning rate of 98 high school students using four increasingly interactive versions of computer-based interactive video instruction. Students are grouped by ability levels and results are compared for recall rate, instructional time, and acquisition rate. Twenty-two references are…

Effects of graphic representations of algebraic functions on performance of tasks involving expression transformations were studied for 28 teachers debugging transformed expressions through syntactic manipulations (SYMs) or semantic interpretation (SEI). Those using SEI improved performance using graphs. Some positive effects of graphic feedback…

Discusses how to examine and evaluate claims of improved academic performance in advertisements for computer-assisted instruction. Highlights include the proper use of comparison groups; types of statistical analyses; the Hawthorne effect; the interpretation of scores; interpreting graphic presentations; tests of significance; and cost…

Describes a study of first-year students at a university in Scotland that was conducted to determine their use of computers at home and in school, their knowledge about information technology, and reasons for not studying computing. Results are compared with two earlier studies to examine gender-related differences over time. (Contains 12…

Describes projects in a fifth grade classroom that used data collection and graph making activities as part of a collaborative project between the teacher and the library media specialist. Discusses the use of Excel spreadsheets, comparing the effectiveness of different types of graphs, and project planning. (LRW)

This study compared the effectiveness of microcomputer and workbook instruction on silent reading comprehension performance of mild mentally retarded and learning disabled 11- to 13-year-olds. Effectiveness was measured by percentage of correct responses to reading comprehension questions and by observing subjects' attention to task behavior. (MBR)