Adaptation, interactions between species and their environments, and change over time are fundamental principles in biology. They represent aspects of two of the big ideas in science: evolution and natural selection. To help students understand these ideas, the authors developed the "Guppy Game." In this article, they describe the game and how…

The world's greatest cities and centers of civilization arose near or along major waterways providing access to the sea. Many people, no matter where they live, find the ocean and the life associated with it a fascinating topic. Although the ocean is characterized by high taxonomic diversity (over 90% of the animal phyla are represented in the…

Schools in the United States are faced with an increasingly diverse student population and a dramatic increase in the number of English language learners (ELLs) in all grades. As such diverse populations grow in this era of high-stakes testing and accountability, there is increased pressure to make science accessible to all. To help promote…

For many science students and teachers, the history of science brings to mind musty portraits of long-ago chemists, physicists, and biologists, birth and death dates, and some brief mention of specific contributions. Frequently lost amid teaching pressures are the lessons that may be found in the history of science. These stories not only teach…

Water rockets are used to present Newton's three laws of motion to high school physics students. Described is an outdoor activity which uses four students per group. Provides a launch data sheet to record height, angle of elevation, amount of water used, and launch number. (MVL)

Describes activities with a cartesian diver, a marginally buoyant float. (PR)