Describes a simple activity that explores and reveals the principles of significant figures and scientific notation using a 500 gram bag of unpopped popcorn. Students must devise a method for determining the number of kernels in the bag. (DDR)

Describes an innovative high school program that uses oceanography, mathematics, and science as common threads in the instructional program. The program utilizes an innovative class structure, community involvement, and hands on activities. (DDR)

Provides tips and resources to help science teachers of the deaf. Discusses how to counter myths, how to use an interpreter, and communicating during the lab. (DDR)

Introduces the project Technology Enhanced Elementary and Middle School Science (TEEMSS) which implements technology into numeracy, literacy, and scientific working. Uses a hands-on science approach. (YDS)

Describes a simple, safe, and inexpensive hands-on demonstration of normal and abnormal coagulation using bovine blood plasma. (JRH)

Before designing an interdisciplinary portfolio project, educators at a Colorado middle school surveyed seventh- and eighth-grade students about their most memorable work. Students' most memorable work in school included hands-on science, independent research projects, speech making, research on foreign cultures, field trips, and art projects.…

Describes some inexpensive activities and demonstrations that illustrate basic concepts that are often overlooked, as a low-cost means to foster student participation in physics classes. Activities described deal with acceleration and forces, freefall, conservation of energy and momentum, conservation of angular momentum, and resonance. (JRH)

Reports on a study of children ages 10-11 years (N=6) exploring forces. Reveals a gap between the ways that measurement is used in mathematics and the ways it is used in science. Reviews the focus of the National Numeracy Project. (DDR)

Describes a physics demonstration in which two-liter plastic bottles can be used to show how force relates to pressure and area. Identical drinking straws are launched out of similar plastic bottles with different-sized openings. This demonstration proves qualitatively that pressure is inversely proportional to the area exposed to an object when a…

Explores gender and racial differences on two science alternative assessments, an open-ended paper-and-pencil assessment and a hands-on performance assessment. Significant differences in achievement were noted. Contains 40 references. (DDR)

Describes a program for teachers that focuses on environmental issues and stresses the development of collaborative relationships with scientists. (DDR)

Describes a course for talented high school students that focuses on DNA science and technology. Employs Cold Spring Harbor's DNA Science laboratory manual. Engages students in performing sickle-cell anemia and thalassemia tests in rabbits. (DDR)

Details the active-learning approach to teaching cellular respiration in an introductory, one-semester course for nonmajors. Focuses on a laboratory exercise designed to answer the question of what happens to food when eaten. Contains 19 references. (DDR)

Provides hypothesized explanations for local item dependence (LID) in a large-scale hands-on science performance assessment involving approximately 55,000 students each at grades 3, 5, and 8. Items that appear to elicit locally dependent responses require examinees to answer and explain their answers or to use given or generalized information to…

Describes an activity in which students use metric measurements to find length and mass, calculate the towing strength of a bess beetle, and compare animal adaptations with human adaptations. (WRM)