In this study, a system was developed to offer adaptive remedial instruction materials to learners of Chinese as a foreign language (CFL). The Chinese Listening and Speaking Diagnosis and Remedial Instruction (CLSDRI) system integrated computerized diagnostic tests and remedial instruction materials to diagnose errors made in listening…

The discipline-based education research (DBER) report from the National Research Council (2012) highlighted the existence of a research-practice gap in science instruction in higher education and the need to identify strategies to close it. This study hypothesizes that one potential factor is instructors' access to research-based…

This study attempted to determine the influence of prior knowledge in mathematics of students on learner-interface interactions in a learning-by-teaching intelligent tutoring system. One hundred thirty-nine high school students answered a pretest (i.e., the prior knowledge in mathematics) and a posttest. In between the pretest and posttest, they…

Interactive instructional methods are characterized by engaging students with the course material and involve delivering feedback for their efforts. Using a mixed 2 x 2 factorial experiment, we compared the effects of multiple choice answer formats (word versus letter) and methods (automated versus manual) on 70 undergraduate students' acquisition…

Describes an undergraduate biochemical experiment involving the isolation and characterization of acid phosphatase from readily available materials. (Author/SL)

Describes four science experiments relating to energy developed for interdisciplinary general science courses. (SL)

Describes two experiments for a sophomore level organic chemistry utilizing commercially available borane-methyl sulfide (BMS). (SL)

Describes an experiment for the determination of water/lipid distribution ratios of drugs. (SL)

Preservice preparation courses for elementary teachers of science can provide opportunities to build pedagogical content knowledge. One common concern of preservice teachers is how to cope with a preplanned lesson that does not proceed as planned. Providing opportunities for preservice teachers to experience the unexpected actually immerses them…

The use of the earthworm as a laboratory animal for studying the effect of starvation on nitrogen metabolism is discussed. Simple techniques and methods are presented allowing in vivo physiological responses to be compared with changes in the enzyme potential of gut tissue. (Author/MA)

Describes an experiment which measures the surface tension of a liquid and illustrates interfacial spreading and the Marangoni effect. (MLH)

Describes a laboratory experiment demonstrating the aldehyde oxidase activity in wild type and mutant fruit flies using a quantitative assay. The experiment can be performed in one hour. (MA)

Describes a student experiment in which a pendulum is swung through angles up to 160 degrees by suspending it on a solid rod. Graphical analysis is used for empirically determining parameters. (MLH)

This experiment is designed specifically for students with little knowledge of radical reactions and provides an introduction to the gas-phase chemistry of radicals. Experimental planning based on the student's own observation is an important component of the experiment. (Author/MA)

This article describes two simple undergraduate heat transfer experiments which may reinforce a student's understanding of free convection and radiation. Apparatus, experimental procedure, typical results, and discussion are included. (Author/BB)