Describes a lesson that provides an opportunity for students to obtain the equation for a line describing data they have collected, use the equation they have derived to set up an Egg Bungee Jump, and relate the numbers in the equation to the physical properties of the bungee jump. (WRM)

Uses density to engage students in making quantitative observations that conflict with qualitative observations. Encourages discussion of the discrepancy thereby providing a natural means for student self-assessment and reflection. (DDR)

Details a project in which students explore and study the poisons in their environment by asking and finding answers to their own research questions. Includes some suggestions for involving students successfully in inquiry-based learning. (DDR)

Provides construction and operation details for a tornado machine. Includes suggestions for investigations and information about tornado warnings. (DDR)

Outlines an activity centered around the soap-making process in which soap is made via demonstration. Students are asked to develop an acid-base classification table and discuss various acid-base indicators. (DDR)

Explains an integrated insect unit in which students learn about the characteristics, life cycle, and environment of an organism; learn about specific body structures; and make inferences about the body structure and behaviors of the insects. (DDR)

Discusses the needs of freshmen chemical engineering students in terms of courses related to the field. Describes the nature and content of a course designed to involve freshmen in a chemical engineering curriculum. (DDR)

Offers guidelines to special education teachers who are co-teaching with regular teachers concerning ways to teach hands-on science to students with and without disabilities. (DB)

Measurement of the compositions and temperatures of H2O-NaCl brines in equilibrium with ice can be used as an easy in-class experimental determination of a liquidus. This experiment emphasizes the symmetry of the behavior of brines with regard to the minerals ice and halite and helps to free students from the conceptual tethers of one-component…

Explains an activity in which students construct a simulated ice core. Materials required include only a freezer, food coloring, a bottle, and water. This hands-on exercise demonstrates how a glacier is formed, how ice cores are studied, and the nature of precision and accuracy in measurement. Suitable for grades three through eight. (Author/PVD)

Describes two simple laboratory exercises that allow students to test hypotheses concerning the requirement of cell energy for osmosis. The first exercise involves osmotically-caused changes in the length of potato tubers and requires detailed quantitative observations. The second exercise involves osmotically-caused changes in turgor of Elodea…

Discusses the merits of the National Science Teachers Association (NSTA)/Toshiba ExploraVision competition, one of the world's largest international science competitions. Gives teams of three to four students the opportunity to use imagination and other skills to create a vision of technology in the future. (DDR)

Offers advice on planning geology field trips as well as related sources of information. Focuses on a visit to study geological features in the North Yorkshire Moors and the Yorkshire coast. (DDR)

Provides details of an activity in which students spear a toy fish and learn about the refraction of light. Plans for the sighting apparatus and for making the toy fish are included. (DDR)

Describes how to construct a simple motor from a coffee mug, wire, and magnets. Includes background information, student assembly procedures, troubleshooting, and extensions. (DDR)