Examines the everywhere-observable phenomena of waveforms, and how waves transport energy across a distance within some given medium. Discusses how waves are described, what happens when waves meet, the specifics of standing waves and echoes, and an introduction to Fourier analysis. (JJK)

Some naturally occurring minerals possess a permanent magnetization. Certain processes such as sedimentation or kiln-firing can cause the particles in structures made of such materials to align themselves with the direction of Earth's magnetic field at the time. This direction has varied over the last few thousand years in ways that can be traced…

This paper discusses seventh-grade students' explanations of dissolution and combustion and also identifies their understanding of the differences between physical and chemical changes. A teaching strategy was initially negotiated within an action research group and this strategy was then employed in teaching seventh-grade students. The teaching…

The future of science may depend on how education responds to the growing negativism that students and the public show towards science. What is the value of our current teaching methods, if in helping students achieve higher test scores, they also generate a lifelong disdain of science? Achieving a positive attitude towards science must become a…

Stoichiometry and related concepts are an important part of student learning in chemistry. In this interpretive-based inquiry, we investigated Thai Grade 10 and 11 students' conceptual understanding and ability to solve numerical problems for stoichiometry-related concepts. Ninety-seven participants completed a purpose-designed survey instrument…

In this article, the authors describe the mechanics of They're M-e-e-elting!, an activity wherein middle school students can simulate glacial retreat in Antarctica. They're M-e-e-elting! allows students to melt glaciers, change the water level and salinity of the Southern Ocean, and examine alterations to the Antarctic food web--all without…

In this article, the authors discuss a unique and challenging laboratory exercise called, the paint-stir-stick submarine, that keeps the students enthralled. The paint-stir-stick submarine fits beautifully with the National Science Education Standards Physical Science Content Standard B, and with the California state science standards for physical…

Many middle school students often report that what they learn in school science has little meaning or relevance to their lives. This is not surprising, as schools and students are frequently separated from what is happening in their community. "Service learning" is a pedagogy that has the potential to connect young adolescents with their community…

This article describes the EGO-TRAP project in which students' visits to the Experimentarium science centre in Copenhagen, Denmark, are structured via their mobile phones. EGO-TRAP, so called because it engages visitors in a personal investigation, has been developed with the aim of creating a structured learning experience for children visiting…

The United States Association for Young Physicists Tournaments (USAYPT) held its annual February Tournaments on Feb. 9-10, 2007, at the North Carolina School for Science and Mathematics, Durham, NC. Young physicists' tournaments are theoretical and experimental research-based team competitions described more fully at the USAYPT website:…

Design briefs are plausible situations in which students are asked to solve problems given limited materials, a specific time frame, and a number of rules and limitations. It is the author's contention that the design brief, an established format in technology education, can serve as a unique approach to extend and assess everyday science…

According to reports from 1,441 undergraduate students at a large, public American university, most high-school biology teachers teach evolution. Approximately 25% of students who attended public schools report that their biology teachers also taught creationism, despite the fact that doing so is unconstitutional. When biology teachers teach…

A laboratory experiment is presented in which the freezing point depression is analyzed using milk as solution. The nature of milk as a mixture of different solutes makes it a suitable probe to learn about colligative properties. The first part of the experiment illustrates the analytical use of freezing point measurements to control milk quality,…

This article explores the tensions embedded in the implementation of the No Child Left Behind Act of 2001 (NCLB) that pose both opportunities and challenges for biology instruction with implications for all the sciences. It highlights issues that may arise as biology instruction is adapted to "fit" the NCLB mandates with specific focus…