Discusses the problem of seizing cocaine-tainted money. Describes an experiment designed to determine what percentage of paper currency is contaminated with cocaine. Considers sampling, the analysis method, contamination, levels of cocaine in money and criminal activity, and the reliability of results. (SAH)

Explains the concept of stretch reflexes to students using a mechanical model. The model provides a dynamic multisensory experience using movement, light, and sound. Describes the construction design. (SAH)

Provides laboratory exercises that demonstrate two genetic concepts: the difference between a genetic selection and a genetic screening experiment, and the relationship between phenotype and genotype. (SAH)

Uses alkaline phosphate to remove the phosphate group from phenolphthalein diphosphate. Discusses problems which include the interference of ambient light and temperature variation. Provides detailed information about the apparatus and the experimental procedure. (ASK)

Describes a paternity simulation experiment with two situations. Uses ABO blood group analysis and horizontal agarose electrophoresis to identify the biological fathers. (YDS)

Explains the limitations of a traditional density experiment and presents an inquiry-based laboratory experiment which allows students to develop an understanding on the relationship between the object's properties and the volume of water the object displaces. (YDS)

Introduces physics laboratory experiments offered to general public by the Stockholm Science Laboratory demonstrating collaboration between theory and experiment. (YDS)

Claims that the technology required to produce common products can serve as the basis for student research projects. Describes the process for the creation of rayon from cellulose as a joint teacher/student investigation. (CCM)

Examined 7- to 10-year-olds' ability to acquire a domain-general processing strategy--Control of Variables Strategy (CVS)-- and make valid inferences. Found that with explicit training within domains and probe questions, children could learn and transfer the CVS. Probes without direct instruction did not improve CVS and inferential thinking…

Experiments in an accelerating frame are hard to perform. Illustrates how simple computer software allows sufficiently rapid and accurate measurements to be made on an arrangement of weights and pulleys known as Atwood's machine. (Author/CCM)

Describes the Mock Experiment which introduces both science and non-science majors to the scientific method, literature, and journal articles. Explains guidelines, experiment application, and manuscript evaluation. (YDS)

Presents an experiment on the sampling process including sample size and particle size. (YDS)

Presents a laboratory experiment in which students study the sampling of solids and statistical analysis. (YDS)

Creates an advanced biochemistry laboratory course that focuses on the development of experimental design and troubleshooting skills which provide students with the opportunity to design and evaluate their own experiments through semester-long independent projects with a common theme. Indicates that students were often frustrated but felt that the…