Presents an activity that uses a story attributed to two different tribes from eastern Canada to discuss the rotation of the earth on its axis and its revolution around the sun. (JRH)

Presents ideas on the use of rainy weather for activities in the earth, life, and physical sciences. Topics include formation and collision of raindrops, amount and distribution of rain, shedding of water by plants, mapping puddles and potholes, rainbow formation, stalking storms online, lightning, and comparing particles in the air before and…

Describes a university engineering competition in which students use formal engineering, imagination, and intuition to devise a range of exotic devices. Discusses the organization of the competition, benefits to the department and faculty, and some past examples of successful entries. (MKR)

Presents an activity enabling students of grades four to nine to construct a "Buzzing Bee" model using simple materials. Provides students with the opportunity to explore the concepts of sound and the Doppler effect. (MKR)

Describes the use of simple terraria and aquaria to illustrate basic ecosystem processes and the interrelationships between them. Involves an inquiry-based format which helps students come to an intuitive understanding of how ecosystems are put together and how they function. (JRH)

Presents a classroom activity on estimating animal populations. Uses shoe boxes and candies to emphasize the importance of mathematics in biology while introducing the methods of quantitative ecology. (JRH)

Describes observations of tethered satellites or subsatellites. Presents tracking tips to help students observe a new satellite, the Tether Physics and Survivability experiment. (JRH)

Presents an activity that demonstrates a crude method of mapping the sea floor and helps students appreciate some basic considerations that scientists face in working with a project of this type. Demonstrates the logistics of teamwork and the effects of time and cost limitations on science projects. (JRH)

Explores early railroad expansion and ways in which new railroad technologies contributed to the development of the United States, particularly the western states. Activities help students understand how steam engines work, why stopping trains can be a lengthy proposition, why magnets will figure prominently into future trains, and why train…

Describes one teacher's experience working at a science center during a leave of absence from teaching. Discusses the Center of Science and Industry (COSI) in Columbus, OH. COSI is a science and technology center where visitors can see and interact with hundreds of exhibits and demonstrations on topics related to science, industry, health, and…

Presents a science activity using cubes for constructing the "Olympus Mons" model, the largest known volcano in the solar system. Uses the Catalina Mountains as a real-life comparison and builds a scale-proportionate model. (YDS)

Presents a lesson on toothpick chromosomes as a way to model genetics concepts in a more tangible and accessible way for middle school students. (KHR)

Presents a series of safety scenarios that science teachers may encounter during a camping trip or field instruction. Provides activities and background information on the topic of safety around abandoned, active, and idled mines as well as information addressing technology and mining careers. (KHR)

Describes activities designed to introduce cells to students and grab their attention. Provides effective strategies to teach many new terms and unfamiliar words related to organelles. (KHR)

Presents an outdoor activity to study pill bugs. Includes a lesson plan. (KHR)