1900 Air Pollution
Examine this graph from FRONTLINE/NOVA: Whats Up with the Weather? Web site to see dramatic increases in three greenhouse gases over the last two hundred years.
This interactive applet operates in one of two modes: auto draw and create shape mode, allowing the user to explore the area and perimeter of non-standard shapes. Immediate feedback is given on answers entered.
Scope on Safety - Safety contracts : Let it be written, let it be done
Student safety contracts are an important tool for teachers to use in helping to prepare for and maintain a safe working environment. They also serve an additional means of showing that the teacher was working in good faith when dealing with safety issues, should litigation be on the agenda. The following is an example that is used at Smith Middle School in Glastonbury, Connecticut, for physical science courses.
Mathematics Education in the Middle Grades: Teaching to Meet the Needs of Middle Grades Learners and
In September 1998, the Math Science Education Board National held a Convocation on Middle Grades Mathematics that was co-sponsored by the National Council of Teachers of Mathematics, the National Middle School Association, and the American Educational Research Association. The Convocation was structured to present the teaching of middle school mathematics from two points of view: teaching mathematics with a focus on the subject matter content or teaching mathematics with a focus on the whole chi
This activity allows the user to measure angles and explore the concept of scale as it pertains to maps, images, and drawings.
In this activity, students are introduced to the properties of solids, liquids and gases. Students will learn that colloids are mixtures which display the properties of more than one of these states, make putty (a colloid), and experiment with its properties. In addition, students can use different glues and test how the properties of the putty changes.
Ready to Teach (RTT) interactives library
This web site offers access to four interactive software tools designed to help teachers and students of algebra visualize and experiment online with key concepts related to linear and piecewise functions. Copyright 2005 Eisenhower National Clearinghouse
PET (Positron Emission Tomography) scans
Here is an overview of PET (polarized emission tomography), a brain scanning technique. The web page offers a description of how PET scans are conducted and an example of the kind of image they can produce. The science behind PET's ability to document levels of brain activity is also briefly addressed. As part of a set of materials about brain scanning technologies, this overview also points out how PET differs from earlier types of brain scans. Copyright 2005 Eisenhower National Clearinghouse
How high? : measurement (grades 6-8)
With this virtual manipulative, the student investigates conservation of volume with a virtual simulation of pouring a liquid from one container to a container of the same shape, but of a different size. There are four cylinder shapes to choose from: rectangular prism, cylinder, cone, and pyramid. The left container is partially filled with liquid and the base dimensions of the two cylinders are given. The student uses a slider to estimate how high the liquid will rise when poured into the secon
National Geophysical Data Center: Relief Globe Slides
This set of 20 slides contains 14 global views of the Earth in full color shaded relief, showing land and undersea topography. The planet is seen from vantage points over the poles and each major ocean and land mass. Also included are a rectangular Mercator projection view of the whole Earth, as well as displays of crustal plates and their relation to world seismic activity. The images are computer-generated from a digital database of oceanic bathymetry and land topography.
Nucleic Acids : DNA and RNA
This lesson is an introduction to the structure and function of DNA including the process of DNA replication. A short multiple-choice quiz is included.
These pages, part of From Stargazers to Starships, explain electromagnetic waves and sunlight. Information inlcudes physiological and spectral color, spectral lines, the electromagnetic field work by Maxwell, the discovery of radio waves by Hertz, and photons and Einsteins relation. Stargazers also has detailed lesson plans accompanying these sections.
Using History and Biographies in Science
This article describes the use of history and biographies in the development of the educational modules available through Vision Learning, Inc. It includes suggestions for using these resources in the classroom.
What's a quick way to unroll a roll of toilet paper? This material is part of a series of hands-on science activities designed to arouse student interest. Here students use Bernoulli's principle and an electric leaf blower to force air over the top of the toilet paper to quickly unroll it. The activity includes a description, a list of science process skills and complex reasoning strategies being used, and a compilation of applicable K-12 national science education standards. Also provided are c
Science Sampler : Growth Potential
Students will enjoy carrying out this exciting and challenging research project that combines science with computers and mathematics to investigate how polyacrylate animals change in size over time when placed in water and aqueous salt solutions. The hands-on activity motivates students and provides them with enjoyable and rewarding science project experiences. Here they have an opportunity to solve a problem and use the science inquiry skills of observing, collecting, organizing, and analyzing
Box model (grades 6-8)
This virtual manipulative enables the student to randomly generate data that is displayed on a chart. The chart shows the results of a simulated drawing with replacement from a set of numbers selected by the student. The manipulative can be used to simulate flipping a coin or tossing a die. A pause button stops the simulation. A button for showing theoretical probability places an outline on the theoretical probabilities chart, which allows the student to compare the theoretical and experimental
DNA interactive chronicle
This site contains four interactive modules that offer teachers a direct look at how information about genetics can be misapplied and misinterpreted within societies. The modules are arranged by topics that focus on Eugenics, Carrie Buck and forced sterilization, Nazi Germany and the elimination of mental illnesses, and a personal account of a woman living with manic depression. Each module is subdivided into additional parts. These parts include images, videos, and simulations of contributions
Jen's home of multicultural math games
This website includes descriptions of three mathematical games from different cultures: Mancala, a counting game from ancient Egypt; Rithmomachia, a 'battle of numbers' board game dating back to 1150 and used by Roger Bacon to teach arithmetic; and To-pe-di, a Native American game of chance. Each game is illustrated. Other terms: geometry, Boethius, Pythagorean number theories, dice sticks. (Includes 5 references)
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
Early atomic understanding
This brief timeline covers all the major ancient Greeks and their various ideas. It is part of a larger website, which includes sections on Scientific Revolution and Classical Mechanics, Quntum Theory and The Modern Standard Model.