In this Science Update from Science NetLinks, features an interview with Yoshihiro Kawaoko a virologist at the University of Wisconsin. In this interview, Kawako describes what made 1918 flu virus, which killed 20 million people, so deadly.
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This lesson focuses on a current issue in science in order to help students understand the process by which scientific knowledge is developed and refined. The goal of science is to advance human understanding of the natural world and that sometimes means changing long-held views. According to recent studies, many students think that changes come mainly through facts and improved observational and measuring technology. However, they often do not make the distinction that advancements or changes can come from both new observations and reinterpreting old observations.
This Science NetLinks lesson is intended for a high-school, introductory chemistry class or health class. The lesson begins with an article on the history of the development of aspirin. Students will then complete a lab that compares the reaction of regular aspirin, buffered aspirin, and enteric aspirin in neutral, acidic, and basic solutions. They will then analyze the results of the experiment to gain insight into how this information was used by researchers to solve some of the problems associated with aspirin. To complete the lesson, students must understand acids and bases.
In this Science Update, from Science NetLinks, students listen to an interview with Kevin Kelly, co-founder and board chairman of the All Species Foundation in San Francisco. Kelly discusses his mission to discover, identify, and document every species on Earth within the next 25 years. Students then read more information about the project, and conclude by answering some related questions. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLinks lessons and other related resources.
In this online activity, a fictional character, Arnold is missing a number of body parts. Students are presented with a body system and a variety of organs. Students drag and drop all the organs that belong in that particular body system to Arnold's body. Once all four systems are complete, a clothed Arnold will appear.Note: if students drag in an organ that doesn't belong, all the organs pop out and students have to start that system over. This exercise can also be found at Kineticcity.com under mind games.
The purpose of this lesson, from Science NetLinks, is to use the Internet to explore how the immune system functions in a variety of allergic reactions. In middle school, students should have had experiences studying the healthy functioning of the human body. In high school, students should relate their knowledge of normal body functioning to situations in which functioning is impaired due to environmental or hereditary causes. Also at this level, students should try to find explanations for diseases in physiological, molecular, or system terms. Since the primary purpose of this lesson is to explore the role of immune responses in allergic reactions, students should already have a working knowledge of body systems, and the immune system in particular.
In this lesson, students will participate in classroom discussions and visit a website to learn more about animals and how well (or poorly) theyve adapted to satisfying their needs in their natural habitats. This will help move them toward the goal, in later grades, of understanding ecosystems.The Kratts' Creatures website used in this lesson provides students with a simple, visual means for familiarizing themselves with basic world ecosystems as well as some examples of the animals that occupy them.
The focus of this Science NetLinks lesson is threefold. First, to expose students to the fact that all species have a capacity for communication. Second, to enlighten students to the fact that communication abilities range from very simple to extremely complex, depending upon the species. Third, to realize that communication is influenced by a species' genetic makeup, its environment, and the numerous ways by which animals and humans respond to and adapt to their surroundings.
This lesson from Science NetLinks exposes children to a wide range of animals and guides them through observation of animal similarities, differences, and environmental adaptations. This lesson can be used as part of a study of plants and animals. Before doing the lesson, students should know the meanings of the terms: plant, animal, and living.
This Science Update, from Science NetLinks, features an interview with George Georgiou about efforts to make a better vaccine against anthrax. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLink lessons and other related resources.
This Science NetLinks lesson focuses on the bacterial disease known as Anthrax. Anthrax has always been identified as a disease that infects cattle, but there are known cases of people contracting this disease directly from handling infected cattle. In this online lesson the students will research the disease and its impact on human health.
Today, it's hard to find dishwashing liquids or hand soaps that don't advertise their "antibacterial" chemicals. But while it's unclear whether these chemicals actually help us, there's new reason to believe they might do more harm than good. This Science Update examines the common antibacterial agent, Triclocarban or TCC, which is found in hand soaps and other household products.
In this Science NetLinks lesson, students determine what artifacts are, how they are discovered, and what information can be learned from them. They also learn how artifacts are initially buried and then excavated. This lesson is one of a two-part series on archaeology.
In this Science NetLinks lesson, students hypothesize how people lived during a certain time, based on archaeological sites and artifacts. This lesson puts students in the role of archaeologist, using the mysterious city of Catalhoyuk to explore how artifacts can give us clues to how people once lived. Students will explore an archaeological mystery that demonstrates the importance of context in learning from artifacts. Factors such as the artifact's location, its proximity to other artifacts, and the number of similar artifacts found can provide strong clues about the possible purpose and origins of the artifact, as well as the physical characteristics and behaviors of people responsible for creating it. This lesson is the second of a two-part series on archaeology.
This Science Update, from Science NetLinks, features an interview with Purdue University psychologist Susie Swithers about new research suggesting that artificial sweeteners may promote overeating. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLink lessons and other related resources.
On August 7, 1996, a chunk of rock made front-page news. It was a meteorite from Mars that was believed to contain fossils of one-celled life forms. Although that particular claim is still the subject of much debate, scientists are still intrigued by the possibility that microbes from Mars may have once seeded the Earth. In this Science Update, you'll hear about an unusual experiment that could help provide the answer.
Bacteria get a bad rap for causing disease, but many of these organisms are beneficial. Without them, we wouldn't be able to digest our food, and garbage would never decompose. Now, one group of scientists has found another way to put bacteria to work. They have developed a fuel cell that can convert organic material into electricity.
In this lesson, students will develop their understanding of animal behaviors and the interaction of innate abilities and learned behaviors. The Beagle Brigade is a team of beagles and their human handlers who inspect luggage at U.S. airports searching for agricultural products. They are part of the United States Department of Agriculture's Animal and Plant Health Inspection Service (USDA-APHIS). The USDA is charged with making sure that meat, animal byproducts, fruit, and vegetables that can carry diseases and pests harmful to U.S. agriculture are kept out of the country. Often these products are brought into the country by travelers. The APHIS works in conjunction with the U.S. Customs Service, Public Health Service, and Immigration and Naturalization Service at entry points to the U.S., including land borders, ports, and airports to make sure that this doesn't happen. The Beagle Brigade contributes to this effort by working in the baggage-claim areas at international airports. Dogs in the Beagle Brigade wear green jackets. One reason why beagles were chosen for this work is that they are small and easy to care for. They also are not as intimidating to people who are uncomfortable around dogs--such as larger dogs like German Shepherds. This is important in busy international airports where there are large numbers of people at all times.
An estimated ten million Americans have osteoporosis, an age-related disease in which the bones gradually become brittle and weak. Now, scientists are looking to animals for clues on how to combat this condition. This resource describes the study of sustaining bone strength of hibernating bears.