When students design and build their own versions of instruments, they appreciate them more--and are more likely to appreciate how experimentation plays a critical role in explaining the world around them (NRC 1999). In this activity, students learn how science is done by becoming active participants. They use free lenses to build simple…

Describes the development and use of a web site designed to engage middle school students in problem-based learning while addressing science education standards related to cell biology, technology, social aspects of science, and the nature and history of science. Students learn about naturally occurring opiates as they solve a mystery and conduct…

Describes a problem-based unit in which students are charged with the responsibility of discovering what killed the menhaden fish in a local river. Involves the teacher coaching students through the problem and directing them toward resources and lines of inquiry. Enables students to gain an understanding of their local environment and the…