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)

Presents a descriptive analysis of 29 online writing lab sites for email tutoring, currently the most popular mode of computer-mediated collaboration. Considers how email tutoring interfaces represent the literate practice of email tutoring, shaping expectations and experiences consistent with its literate aims. Suggests that email tutoring…

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)

The Model Science Lab, an innovative approach to sustained inservice teacher development and educating underserved youth, has transformed a Houston-area school. Introducing the lab brought an integrationist plot line that has interrupted the school's segregationist and separationist legacy. Layered forms of collaboration aided reform efforts.…

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)

Includes "Welding's Wave of the Future" (Gary Mitikin); "Welding Safety" (Mike Pankratz); "Help Wanted--Only Qualified Welders Need Apply" (Robert J. Teuscher); and "Career Directions." (JOW)

Synthesis of research on safety in agricultural education laboratories found most research focused on agricultural mechanics. Labs appeared to be potentially hazardous places, and teachers have inadequate knowledge of safety laws and ways to provide a safe working environment. (SK)

Suggests that students and tutors resist conference summaries because they maintain a hierarchy between student and tutor. Proposes that tutors and students need to embrace the resistance that they feel toward conference summaries and rethink how tutoring sessions are "written up." Concludes that tutors must be willing to believe that students can…

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…

We investigated the benefits of using a virtual laboratory, Sniffy Lite CD-ROM (Alloway, Wilson, Graham, & Krames, 2000), as a supplemental teaching tool to present schedules of reinforcement in operant conditioning. Our results suggest that using the virtual laboratory significantly enhanced understanding. Students who used the virtual laboratory…

This article presents a class activity called "The Case of the Disappearing Snack" that involved second- and third-grade students. In this activity, the students investigated who stole the class snack. As they investigated the "crime," they developed critical-thinking skills and practiced using a microscope. Although microscopic evidence was not…

Past research has shown that many scientists, when asked to interpret unfamiliar graphs that have nevertheless been culled from introductory undergraduate courses in their own field, experience problems and cannot give the standard answer accepted in the field. Yet, these same scientists turn out to be highly competent when it comes to graphs from…

This article describes an inquiry-based activity for high school students in which they determine the pH of the digestive compartment in "Paramecia" using different pH indicators. This lab activity introduces students to the challenges of research on the cellular level and illustrates one of the primary methods that scientists use to measure the…