What Did T. rex Taste Like?
This computer activity is an introduction to cladistics, which organizes living things by common ancestry and evolutionary relationships, enabling us to better understand life's present diversity and evolutionary history. The predictive power of cladistics can be used to answer questions that cannot be answered by observation of a living organism, such as What did dinosaurs taste like? This site presents a simplified version of the process used to generate cladistic analyses. A teacher's section
A Private Universe
This site describes and provides access to a twenty-minute video documentary on education research for grade 5-12 educators. With its opening scene at a Harvard graduation, this video program explores why so few students truly grasp basic science concepts. The program traces the problem through interviews with Harvard graduates and their professors, as well as with a bright ninth-grader who has some confused ideas about the orbits of the planets. This site also provides individual program descri
University of Iowa : burn oat hulls for economic, environmental benefit
What is an alternative energy source that is available today? This article, part of a series about the future of energy, introduces students to a pilot project of burning oat hulls at the University of Iowa power plant. Students read that the burning of oak hulls instead of coal provides for cleaner air and additional space in landfills. Copyright 2005 Eisenhower National Clearinghouse
Scope on the Skies : Convening with Comets
In February 2004, not only were the four brightest planets visible across the evening skies, but there was a comet rendezvous mission nearly completed while another was just getting started. Comet missions not only provide information about comets and their origins, but they also give us an important insight into the origins of our solar system. This month's Scope on the Skies column describes the Stardust spacecraft mission.
Insights into Algebra 1 : Teaching for learning
This is an eight-part video, print, and Web-based professional development workshop for middle and high school teachers. Participants will explore strategies to improve the way they teach 16 topics found in most Algebra 1 programs. In each session, participants view online videos that showcase effective teaching, then engage in activities designed to help them examine their teaching practice, incorporate what they are learning into their practice, share their experiences with other teachers, and
Ready, Set, Escape
During this project, students will be asked to design a device that will measure out a time period of exactly 3 minutes. They will be asked to brainstorm ideas using the different materials provided. Students will observe and explain the effects of conservation of energy.
How ozone is made
How does ozone in the upper atmosphere help protect life on Earth? This informational piece, part of an interactive laboratory series for grades 8-12, explores the production and destruction of ozone in the upper atmosphere. Here students view an animation of ultraviolet light breaking an oxygen molecule to form ozone and then the ozone splitting when struck by ultraviolet light. Text explanations are provided along with chemical equations. Copyright 2005 Eisenhower National Clearinghouse
Blue Planet Challenge - A natural history of the oceans
This very interactive site uses a variety of games to explore ocean related subjects. The games cover such topics as tidal zones, deep ocean species, ocean currents, general animal life of the ocean, symbiotic relationships, water pressure, human impact on ecosystems, and the habitats found at the South Pole and along the California coastline. There are help tabs added to the games called Species Fact Files and Infobursts where a player can find out more information on a particular topic if need
Lobster's Violin: Why They do it
This two-minute radio show focuses on why spiny lobsters make sounds using soft body parts. While the sounds of a lobster play in the background, the show's guest scientist explains that the spiny lobster, being an arthropod, goes through a molting process in order to grow. It produces these sounds to ward off predators when its new outer skeleton is not yet hard. The show, which is from the Pulse of the Planet radio program, is available here in audio and text. Copyright 2005 Eisenhower Nationa
Melting Polar: Antarctica
This two-minute sound segment discusses the effect of global warming at the South Pole. It is thought that the effect would be different than at the North Pole because the South Pole is located on land. This site is from an archive of a daily radio program called Pulse of the Planet, which provides its listeners with a portrait of Planet Earth, tracking the rhythms of nature, culture and science worldwide and blending interviews and extraordinary natural sound. The site also provides a written t
Observe animations of processes that occur along plate boundaries
Here are three animations that reveal how tectonic plates move relative to each other at three types of plate boundaries--transform, convergent, and divergent boundaries. Key features such as the asthenosphere are labeled in the animations. In addition, each animation is equipped with movie control buttons that allow students to play, pause, and move forward and backward through each clip. The animation of a transform boundary shows the North American and Pacific plates sliding past one another,
Tangrams : geometry (grades 6-8)
Using this applet for the Chinese tangram puzzle, students can experiment with the placement of the seven tangram blocks to form 14 different shapes. Shapes range from a square to a reclining human. After selecting a shape from a menu, the selected shape's outline appears on the screen. Students move, flip, and rotate each tangram block to discover how the blocks fit together to form the selected shape. For the more complicated figures, students can access a hint by clicking a button that then d
Factoring Special Products
Choose the correct steps to factor a polynomial involving perfect-square binomials, differences of squares, or constant factors. Use the feedback to diagnose incorrect steps.
Villainy, Inc : thwarting world supremacy through mathematics
This animated web site features two adventure missions that challenge middle grade mathematics students to stop the evil Dr. Eugene Wick's schemes to take over the world. The students/players assume the role of double agents working undercover as advisors to Dr. Wick's company, Villainy, Inc., while trying to foil Wick's evil schemes using their mathematics skills. Both interactive missions are completed by problem solving and using logic to find answers to mathematics problems involving measure
NOVA: Stronger Hurricanes
This slide show, accompanied by a broadcast segment from the TV show, examines the link between rising sea surface temperature and storm intensity. The video clip is 6 minutes long. Links are also provided to a 1995 story on Hurricane Katrina, to websites with related information, and to a teacher's guide and written transcript of the broadcast.
JGI Nitrosomonas europaea ATcC 19718
As part of the DOE initiative to explore the role of microorganisms in global carbon sequestration, the Joint Genome Institute is sequencing the autotrophic nitrifying bacterium Nitrosomonas europaea. This organism plays a central role in the availability of nitrogen to plants and hence in limiting C02 fixation. These bacteria are important players in the treatment of industrial and sewage waste in the first step of oxidizing ammonia to nitrate.
A Change in Seasons : Increasing Student Observation Skills
The ability to accurately observe and notice small details is a skill important to scientists. To help students develop this skill, have them record and share observations, successively focusing in on smaller, more precise details. When students observe changes in the seasons, they can extend their science knowledge by carefully noting changes in color, shape, and patterns in vegetation, asking questions, and making predictions.
Triangle Geometry: Angles
This interactive math site teaches students about angles and triangles. There are interactive activities for measuring angles, exploring types of angles, and adding angles. By using a Java applet and pictures, a proof of the Pythagorean Theorem is demonstrated.
Interactive atmosphere lab
The ozone layer makes up an important part of our atmosphere. This informational activity, part of an interactive laboratory series for grades 8-12, explores changes in ozone concentration with altitude. Students view a diagram that shows the layers of the atmosphere with a temperature scale running from the surface of the Earth to the outermost reaches of the atmosphere. After reading introductory material, students are presented with nine questions about the layers of the atmosphere and intera
Crazy Choices Game
Three players play games of chance using dice, cards, spinners or coin tosses, to compare theoretical and experimental probabilities. Instructor guidelines and Help are included.