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The aim of this study is to determine what students' conceptions of a chemical are as they graduate with degrees in chemistry. With the knowledge of what preconceptions students are bringing into the classroom,…
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Favorite Demonstration: Differential Weathering
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In this inquiry-based demonstration, the consumption of a Baby Ruth candy bar is used to nurture students’ interest in chemical and physical weathering. In addition, two other concepts can be illustrated: the difference…
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Researching Radon: Students use GIS technology to analyze radon levels in Italian communities
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United States students whose parents serve at Avianto Air Base in Avianto, Italy, live in many different villages in this region of northern Italy. Due to the varied geological conditions in which students live, a wide…
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Moving from Content Knowledge to Engagement
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Combining service learning with environmental and science issues allows students to move beyond awareness toward engagement. The action team service project requires students to build in-depth knowledge, apply skills…
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Analyzing Scientific Literature Using a Jigsaw Group Activity
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After gathering into groups to read papers with different viewpoints on a scientific topic, students form into new groups to share the diverse viewpoints expressed by the scientist-authors of their papers. This modified…
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WebGURU: The Web-Based Guide to Research for Undergraduates
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Undergraduate research (UR) is widely promoted by faculty, administrators, institutions of higher learning, government laboratories, private industry, professional associations, and funding agencies as an effective…
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This study is an analysis of the effectiveness of a faculty-designed laboratory experience about a difficult topic, cellular respiration. The activity involves a hands-on model of the cellular-respiration process,…
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Keys to Teaching the Nature of Science
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Despite continuous and well-reasoned recommendations that students need to have an understanding of science as a human endeavor and the nature and history of science across all grade levels, some students and teachers…
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Scope on Safety: Invasion of the Alien Species
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This column shares safety information for your classroom. This month’s issue discusses nonnative species.
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A Cooperative Classroom Investigation of Climate Change
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Scientists have a particularly difficult time explaining warming trends in Antarctica—a region with a relatively short history of scientific observation and a highly variable climate (Clarke et al. 2007). Regardless of…
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The Case Study: Twixt Fact and Fiction
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What shall it be, a real case connected to the real world with blood, sweat, and tears or a fantasy, a twice-told tale by a spinner of yarns around a campfire on a summer night? When a teacher sits down to write a case…
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This lab exercise investigates and compares the carbon monoxide content of automobile exhaust and cigarette smoke. The experiment uses gas chromatography with thermal conductivity detection to analyze the percentage by…
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What has six legs, three body parts, and is loved by second-grade students? An insect! In the unit described here, students engaged in a comprehensive insect study that incorporated the National Science Content…
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Research and Teaching: Who Does Extra-Credit Work in Introductory Science Courses?
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On the first day of classes, 81% of students in an introductory biology course claimed that they would submit extra-credit work if given the opportunity. When given two chances for extra-credit work, fewer than one-…
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Every Day Science Calendar—October 2007
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This monthly feature contains facts and challenges for the science explorer.
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