Soil as Living Skin
In this two-minute radio program, a soil scientist introduces listeners to reasons why soil is crucial to the planet. The scientist lists functions of soil that include nutrient cycling and water filtration, and he also uses living skin as an analogy for soil. The program, part of the Pulse of the Planet radio show, is available here in text and audio formats. Copyright 2005 Eisenhower National Clearinghouse
El Nino Returns
This web page is an online companion to CNN's special coverage on El Nino for the 1997-98 season. El Nino is a strange but powerful weather phenomenon; tracker and background reports provide the user with the science behind El Nino, its history and impact. Topics covered include: forecast; ground zero (Peru); strange brew (weather); prediction meter; the wet coast (California); and the trackers. Links to other web sites are provided, and users may access more up-to-date El Nino stories by clicki
History and Philosophy of Western Astronomy
These web pages give a brief history of the imporatant figures associated with shaping Astronomical thought into what it is today. It covers the work and discoveries of the ancient Greeks, Ptomely, Copernicus, Galileo, Tycho Brahe, Johannes Kepler, and others. This is a part of Astronomy notes, an educational resource for introductory undergraduate astronomy classes.
This online news article discusses the ability of tardigrades to withstand harsh conditions. The article covers the history, biology and significance of tardigrades, as well as the different types of cryptobiosis. It includes detailed images of the organisms and links to related web pages.
This short biography is accompanied by an image of Dalton and includes the three tenets of Dalton's atomic theory.
Critical Evaluation of a Web Site : Middle School Level
This is a checklist designed to help middle school users critically evaluate web resources. By answering the questions in the checklist, students can then assess if the site would be a good one to use for their science research projects. There is a series of How does it look? questions and a series of What did you learn? questions that challenge students to think critically about what they are looking at and then summarize the effectiveness of the web site.
Statistics and probability. Grades 6-8 assessment
This assessment material is designed to help the mentor determine what a grade 6-8 student understands about statistics and probability. The material contains a set of seven short assessment activities that require the use of paper and pens. Also found is an inventory for use by the student's classroom teacher and a mentor planning guide. Answers to assessment questions are correlated to specific activities available in the related instructional unit. Copyright 2005 Eisenhower National Clearingh
Examine global surface currents
This Earth science animation is designed to help high school students visualize the causal relationship between global winds and the temperature and direction of ocean surface currents. The animation presents a world map that shows the direction of surface currents, which are color-coded to indicate warm and cool temperatures. Moving the cursor over the map superimposes gold arrows that indicate wind direction. The introduction summarizes the relationship and calls students attention to the temp
English Language Learners in the Science Classroom
What can we as teachers do to help English Language Learners (ELLs) learn science when we do not speak their languages or know their cultures? Both pre- and in-service teachers have successfully used the following strategies in teaching in teaching language and cultural minorities. These strategies can be, and often are, used by ESL (English as a Second Language) teachers in pull-out programs.
This Java applet enables students to create tessellations, which are patterns on a plane that do not overlap. The student selects a hexagon, rectangle, or triangle to distort by dragging edges and the newly formed corners. Users can select colors for the pattern, and a button displays information in a second window. The window lists the coordinates of the vertices, angle measures, side lengths, area, and perimeter for the shape. From the applet page, What, How, and Why buttons open pages that ex
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.
This Planet Really Rocks
This ThinkQuest Junior site contains information and activities about rocks and minerals. Included is information about what a rock is, the major characteristics with examples of sedimentary, metamorphic, and igneous rocks, the rock cycle, the differences between rocks and minerals, how to identify minerals (color, luster, streak, cleavager, hardness, and specific gravity), and the Mohs Scale. Facts about common minerals and their properties, how rocks and minerals are important, and their uses
An Introduction to the Coordinate Plane
This math site has students find points on a number line and graph points in the coordinate plane. Site includes information about negative numbers on a line, changing the scale of a graph, estimating points, and tricky graphs. A glossary of terms, links to other sites, and suggestions on how to use the material can also be found.
Ohio resource center for mathematics, science, and reading
ORC provides links to peer-reviewed instructional resources that have been identified by a panel of Ohio educators as exemplifying best or promising practice. Available resources also include content and professional resources as well as assessment and general education resources that will support the work of preK to 12 classroom teachers and higher education faculty members. The resources are correlated with Ohio's academic content standards and with applicable national content standards.
Micromechnical Biosensors and their Integration with Aptamer-based Receptor Molecules
This site is one of many on \\\\\\\"nanoHUB.org\\\\\\\" which highlights availability of on-line simulations. This particular one provides a video of a research seminar on the topic of micromechanical biosensors focusing on aptamer-based receptor molecules. The quality of the graphics in the video is not high - mainly, the smallness of the visuals makes it difficult to decipher the contents. However, the information content, as delivered and described verbally, is coherent and useful. The i
Design Step 2: Research the Problem
Through Internet research, patent research, standards and codes research, user interviews (if possible) and other techniques (idea web, reverse engineering), students further develop the context for their design challenge. In subsequent activities, the design teams use this body of knowledge about the problem to generate product design ideas. (Note: Conduct this activity in the context of a design project that students are working on, which could be a challenge determined by the teacher, brainst
How Far Does a Lava Flow Go?
While learning about volcanoes, magma and lava flows, students learn about the properties of liquid movement, coming to understand viscosity and other factors that increase and decrease liquid flow. They also learn about lava composition and its risk to human settlements.
Solid, Liquid or Gas?
Students are given a variety of materials and asked to identify if each material as a solid, liquid or gas. They use their five senses — sight, sound, smell, texture and taste — to identify the other characteristics of each item.
In this activity, students will design a process that removes the most iron from the cereal. This activity is meant for the students to experiment with different materials using what they know about iron, magnets, and forces to design the best process for removing the iron from the cereal.
Students will discover the scientific basis for the use of inclined planes. They will explore, using a spring scale, a bag of rocks and an inclined plane, how dragging objects up a slope is easier than lifting them straight up into the air. Also, students are introduced to the scientific method and basic principles of experimentation. Finally, students design their own use for an inclined plane.