DEET (short for N,N-diethyl-meta-toluamide) is the most widely used insect repellent in the world for a very good reason – it works really, really well! Just a quick spray on exposed skin keeps mosquitoes, flies, fleas, chiggers, and ticks away. Developed by scientists at the U.S. Department of Agriculture and patented by the U.S. Army […]
Archive for the 'Science' Category
After 50 Years, Scientists Still Not Sure How DEET Works
Tuesday, August 26th, 2008 1:48 pm
Written by: Kimberly Lightle
Science Literacy and Culture
Thursday, June 5th, 2008 10:23 am
Written by: Mary LeFever
Need an answer to your students’ question “Why do I need to take science? I’m not going to be a scientist!” On June 1, 2008, Brian Greene, physicist at Columbia University and author, wrote an op ed in the New York Times with your answer. Early in the two page article, he says
When we look […]
Posted in Topics: Science, Social Studies, Technology
Phoenix Explores Mars
Friday, May 30th, 2008 2:40 pm
Written by: Mary LeFever
Middle school students are often intrigued by the excitement of exploration and the adventures of explorers, as their enthusiasm for Indiana Jones attests. Space exploration should be no exception. With new images now available from the Mars explorer, Phoenix, teachers can capitalize on student interest in exploration to meet some of the Earth and Space […]
Posted in Topics: Earth Science, Methods of Science, Nature of Science, Science, Space, Technology
Crop Failures and Food Riots
Wednesday, May 21st, 2008 4:58 pm
Written by: Mary LeFever
Many news outlets reported earlier this week that recent rice crop failures could have been avoided. An infestation of the brown plant hopper is the cause for the crop failure. The science knowledge and biotechnology needed to breed resistant rice plants have been in existence for several years. However, funds were not available to mass […]
Posted in Topics: Agriculture, Biodiversity, Food Supplies, Insects, Life Science, Science
Science, Science Fiction, Ethics, and Indiana Jones
Thursday, May 15th, 2008 1:53 pm
Written by: Mary LeFever
Distinguishing between science and science fiction can be a good reinforcement activity for students learning the characteristics of science. Cognitively, middle school students are able to differentiate between fantasy and reality. But because science is not always intuitively obvious, distinguishing science fact from science fiction can be more challenging. Today’s blog encourages you to use […]
Posted in Topics: Archaeology, Ethics, Methods of Science, Science, Social Studies
Mechanism for Antibiotic Resistance Discovered
Friday, May 9th, 2008 8:32 am
Written by: Mary LeFever
Those of us born after World War II have take antibiotics for granted. Strep throat? Ear infection? Acne? Bronchitis? Not a problem. Take the full prescribed antibiotic dose and you are cured. The reality of antibiotic resistant bacteria however, disrupts that scenario. No longer can we always trust in a full recovery from a bacterial […]
Posted in Topics: Biotechnology, Evolution, Genetics, Life Science, Science
Master Gene Controlling Tumor Angiogenesis Is Found
Thursday, April 24th, 2008 2:21 pm
Written by: Mary LeFever
Typically, a middle school life science study of cells explores the ways cells get what they need and get rid of waste, and the cell cycle concept, including how cells reproduce through mitosis. Discussion of cancer at this time is appropriate since cancer cells share the needs of normal cells in terms of obtaining nutrients […]
Posted in Topics: Genetics, Life Science, Methods of Science, Science
Earth Day
Thursday, April 17th, 2008 10:14 am
Written by: Mary LeFever
This week’s blog focuses on Earth Day, April 22. There is no news article accompanying today’s blog. Instead, we provide you with an assortment of resources related to Earth Day. Do you know how Earth Day started? You can find the answer to that question and more in The History of Earth Day by Gaylord […]
Posted in Topics: Earth Science, Environment, Life Science, Science
Why Did the Anasazi Abandon Mesa Verde?
Friday, April 11th, 2008 3:16 pm
Written by: Mary LeFever
Many middle school curricula include attention to ancient American people and their cultures. This blog entry may be helpful in making connections to the nature of science and scientific enterprises as part of an integrated approach in studying the Anasazi or ancient Peublos. The story titled “Vanished: A Pueblo Mystery,” published in the New York […]
Posted in Topics: Archaeology, Earth Science, Environment, Methods of Science, Science, Social Studies
How Is Species Defined and Why Does It Matter? The Politics of Conservation
Wednesday, March 26th, 2008 6:48 pm
Written by: Mary LeFever
This week’s post focuses on the definition of species and its implications beyond science content knowledge—specifically, how the definition is related to species conservation and protection.
For example, the brown bear of the Iberian Peninsula is a different species compared with other European brown bears because it is geographically isolated, right? According to a press release, […]
Posted in Topics: Genetics, Life Science, Science






Posted in Topics: Health, Insects, Life Science, Methods of Science, Nature of Science, Science
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