Provides details of experiments that deal with the use of operational amplifiers and are part of a course in instrumental analysis. These experiments are performed after the completion of a set of electricity and electronics experiments. (DDR)

Describes an activity that focuses on the question: How hard is it to break spaghetti noodles? Students design their own experiment that involves hanging a cup of pennies from a piece of spaghetti by a paper clip and investigate how many pennies the noodle can support without breaking. (DDR)

Presents a hands-on activity as an excellent starting point for investigations related to the eye. Involves making a simple model of the vertebrate eye to illustrate the formation of an upside-down image on the retina by the lens. Links to investigations in numerous science disciplines including astronomy, genetics, biology, earth science, and…

Introduces students to dissection, which is an important part of scientific discovery. Students not only gain an understanding of the anatomy of a squid, but also develop a sense of responsibility and respect for the animal that they are using as a learning tool. (Author/SOE)

Explores programs at the Fort Worth Museum of Science and History. Focuses on the museum's preschool program and the hands-on science facility. (DDR)

Describes a DNA model constructed with Legos, which allows students to work cooperatively. (YDS)

Reports on the analysis of several syllabus guidelines and school textbooks that indicate that DNA appears mainly in upper school curricula where the emphasis is on cellular responses and classical Mendelian genetics and substantial areas of contemporary genetics are omitted. (Contains 16 references.) (Author/YDS)

Introduces an activity in which students learn principles of force and motion, systems, and simple machines by exploring the best position of the dogs on the dashboard. Includes a sample lesson plan written in the five instructional models: (1) engagement; (2) exploration; (3) explanation; (4) elaboration; and (5) evaluation. (KHR)

Describes an activity based on shrinkable thermoplastics in which students explore the percentage of shrinkage of a plastic ruler when it is heated. Includes science content knowledge behind the shrink, national science education standards related to this activity, and a complete guide. (KHR)

Describes an inquiry investigation to enable students to understand water cohesion, surface tension, and heating curves for water. The investigation includes several activities organized in a three-phase learning cycle: (1) exploration; (2) concept invention; and (3) concept application. (DDR)

Describes an ecology curriculum primarily for elementary school students but also adaptable to junior and senior high school classes. Includes investigative and inquiry-based laboratory problems to accompany inquiry-based teaching. Connects the science learning that happens in school to students' own experiences. (SOE)

Presents a hands-on lesson in biology in which students evaluate the evidence from four death scenarios. Students use knowledge of ecological principles, specifically ecological succession, and insect biology. Recommends three web sites related to the subject. (SOE)

Describes an interdisciplinary unit for upper elementary students that integrates science, geography, history, and mathematics in the study of spoons. Students determine the volume of each spoon by submerging it in a graduated cylinder of water and measuring the difference in water levels before and after submersion. Shows students that scientific…

Describes a gardening project linking science and geography that creates an opportunity to learn about Native American culture. Includes instruction for implementing such a project. (NB)

Presents plant and plant ecology lessons designed to raise student awareness of the effects of human trampling on the environment. Involves students working in teams to determine which types of plants are more sensitive to trampling, and designing a method for testing the prediction. (JRH)