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Favorite Demonstration: Floating Spinach Disks—An Uplifting Demonstration of Photosynthesis
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This exercise is ideal for studying the overall process of photosynthesis. It employs disks punched out of a spinach leaf with a hole-puncher. The flexible experimental design provides the opportunity for open-ended,…
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Editor’s Roundtable: Cycles and connections
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Most middle level students are too young to recognize on their own the complex relationships among the natural cycles. They seldom connect one cycle with another nor do they see the relevance of the cycles to human…
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Scope on Safety: Should we pull the plug on wireless computer networks?
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Wi-Fi, or wireless fidelity, is a type of wireless local area network (WLAN). Two or more computers form the network using radio frequency (RF) signals. The safety of these networks, however, has come under scrutiny in…
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Subjects like Earth Science often rely on "ready made" hands-on materials such as kits and modules to support understanding and science inquiry. However, sometimes the materials need adaptations to make sure they suit…
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When teaching heredity and genetics, a problem-centered, open-ended approach allows students to feel like scientists solving real problems. This investigation of fruit flies (Drosophila melanogaster) gives students…
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For environmental science education to be effective, students must be exposed to the way environmental science is done in the real world. In this article, the author uses an environmental impact analysis as a theme in…
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In this study, the authors describe a Performance Enhanced Interactive Learning (PEIL) workshop model as a supplement for organic chemistry instruction. This workshop model differs from many others in that it includes…
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This paper address three questions apropos of those posed by Kadel (2006) in the context of a large introductory-level undergraduate science lecture course. These questions include how podcasting is used by professors…
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Science Sampler: Modeling the transmission of sound
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Sound can travel through solids, liquids, and gases. This activity models how sound travels faster through solid materials than through gases.
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Cartoon and Bumper Sticker Science
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Humor is one of the most profound and subtle tools used in influencing people’s attitudes. It is also an efficient and pleasant way to communicate information. Humor can be found in every type of media, including movies…
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A full understanding of the mechanisms behind and the importance of scientific research is invaluable to all college students. The Mock Experiment can be used to introduce science and nonscience majors to the scientific…
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In this age of tabloid news and easy Internet access, students must be savvy information consumers. They need to be aware that not all the reports they see may be accurate or factual. It is, therefore, essential that…
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Did you know that the water you use today is the same water that was used millions of years ago? How is this possible? Water is continuously replenished through a naturally occurring process known as the water cycle.…
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Editor's Note (November/December 2004)
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At a time in which teachers are pressured to teach more and more to higher standards, writing in the content areas can provide an authentic way to teach writing skills. This selection includes notes from the field…
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As part of her doctoral research, this author visited a multi-age (K–2) classroom as it studied the five senses. The student-centered, hands-on unit took a community approach—involving visiting professionals, parents, a…
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