State of the World's Forests 2003
The Food and Agriculture Organization of the United Nations presents this biannual report on the status of the world's forests. Available as a series of downloadable documents, this comprehensive report addresses recent developments in the forest sector such as agricultural expansion and mangrove conversion, conservation and sustainable development, forestry education and other institutional concerns, international policy, and other issues.
Discussions of cyborg technology tend to be relegated to science fiction literature and TV programs like Star Trek. This Topic in Depth looks into current issues and developments in the area of cyborg technology. The first website, from the UC Santa Barbara Department of English, (1) lists a variety of resources on cyborgs, from philosophical articles and literary criticism to current scientific practices. A related area of research is brain-computer interfacing (BCI), which is described on this
Amazing Earth Games: Disasters You Can Play at Home
Another above average offering from Discovery.com, the Amazing Earth Games: Disasters You Can Play at Home Web site does a great job at making learning fun. The interactive activities include: Crumble California, in which users get to see how the continental plates have affected the state; Unleash a Superstorm, which lets you create your very own hurricane; and the Destroy Life on Earth activity, which gives you the power to launch fireballs at our planet and witness the result. A great site for
What's New at Sci4Kids
The Agricultural Research Service (ARS) of the US Department of Agriculture offers its latest set of brief but engaging educational activities for kids in this Web site. The recently added feature, No Horsin' Around With These Tests!, introduces immunological concepts in the kid-friendly guise of a story about horses. Two older features are also available, one on using a biocontrol method to combat dry rot fungus in potatoes and another on mites. While these subjects may not at first appear to b
Vision Systems Design
Vision Systems Design is a magazine that provides comprehensive information and analyses about "machine-vision and imaging components, boards, assemblies, software, and systems." Its online version is free and has many Web-exclusive features available. For example, Back to Basics is a series of technical articles about a certain topic; the February 2003 issue has articles on FireWire interfaces, infrared systems used to increase vehicle safety, and much more. Technology news and industry trends
Fairly Fundamental Facts about Forces and Structures
Students are introduced to the five fundamental loads: compression, tension, shear, bending and torsion.
The Physical Characteristics of Minerals
Offered by Amethyst Galleries, Inc. (an online minerals store), the Physical Characteristics of Minerals Web site offers a detailed description of how minerals are identified. Each page gives good information and examples of a particular characteristic (e.g, color, hardness, cleavage, feel, and taste). Also, on the first page are links to dozens of minerals that are categorized by name, class, interesting groupings, and great localities. These give the class, subclass, group, uses, physical char
The Fields Institute: Lecture Audio and Slides
The Fields Institute for Research in Mathematical Sciences aims to "enhance mathematical activity in Canada by bringing together mathematicians from Canada and abroad, and by promoting contact and collaboration between professional mathematicians and the increasing numbers of users of mathematics." They support research in pure and applied mathematics, statistics and computer science, as well as collaborative projects between mathematicians and those applying mathematics in areas such as enginee
What is Design?
Children between the ages of nine and twelve will be drawn into this site that explores the world of design. It encourages "kids to develop critical viewing, technical mastery, artistic awareness, and practical, just, solutions." Many interactive games and activities are available, allowing users to create their own designs and share them with others. For example, children can design their own watch with a simple step-by-step process, and many watches are featured in a gallery. A wealth of infor
Gas molecule motion
This page describes the relationship between kinetic energy of molecules and temperature.
How to Avoid Potential Pitfalls
Information at this site will help teachers to avoid potential pitfalls when teaching evolution. It will help teachers to understand why they should use function not purpose, evidence not proof, and why they should refer to accepting what the evidence shows rather than believing in evolution. There are also cautions about when to use the terms 'primitive/advanced' and 'theory/hypothesis'. Other potentially confusing terms include 'randomness in evolution' and 'ancestor/relative'. The meaning of
Popcorn : if you like popcorn, which one would you buy?
This third challenge in the Figure This! list of 80 math challenges directs the student to use popcorn to compare the volumes of tall and short cylinders formed with 8- by 11-inch sheets of paper. The challenge points out that it is important to be able to make visual estimates and find volumes. The web page includes links to a solution hint, the solution, other related math questions, and print resources that contain mathematics activities about packaging and wrapping shapes. The Did You Know a
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
Galleries of polyhedra shown using JPEG pictures and 3D objects in VRML2.0 format. Uniform polyhedra; Duals; Compounds; Johnson's solids; 59 stellations of icosahedron; 270 stellations of deformed dodecahedron; symmetric stellations of rhombic triacontahedron: polyhedra and stellation diagrams; Spherical Platonic polyihedra; Infinite regular polyhedra ; Compounds Composer (an interactive building of polyhedra compounds); Polyhedral Kaleidoscope; Symmetrical compounds of uniform polyhedra; Stella
Looking at the sky through a glass ceiling : women in astronomy
This article looks at the involvement and acceptance of women in astronomy. Before introducing readers to three significant female astronomers from the 1900s and three from the present day, the article mentions the work of the first known female astronomer--Aglaonike from 200 B.C. Statistics are also provided concerning contemporary women's participation in astronomy. The three astronomers featured from the 1900s are Henrietta Swan Leavitt, Cecilia Payne-Gaposchkin, and Jocelyn Bell Burnell. Eac
This feature, adapted from Interactive NOVA: Earth, follows the path of energy as it is transferred via the food chain from one type of organism to another.
Ten preparation steps for a successful group presentation
This resource informational piece, part of a series about the future of energy, introduces students to the process of making a successful group presentation. It lists 10 steps for students to follow when making presentations. These include: research and gather information, focus the group's efforts, create a story line, and self-evaluate, among others. Students are given guided questions and checklists for each of the 10 steps to self-evaluate whether they have successfully completed the step. A
Scope on Safety : Essential First Aid for Science Teachers
From a practical standpoint, science teachers should be trained to respond to incidents involving burns, bleeding, chemical exposure, swallowed poisons, penetrating objects, lacerations, and shock. Basic training is required to properly handle these situations, and this training should be reviewed annually. A list of possible lab incidents and the appropriate first-aid response is provided.
Scope on the Skies : Location, location, location
While traveling from home to distant locations, it is easy to feel both a sense of unfamiliarity as well as familiarity with the change in location, especially when considering the view of day and night skies. The position of celestial objects like the Sun, Moon, planets, and stars is directly related to viewing latitude. In the classroom, students can take virtual trips to different latitudes through the use of handheld manipulative models such as the Earth Space Simulator (See internet resourc
Measuring the Height of a Building Using Shadows
What time of day is best to use a shadow to measure the height of a building by using triangles?