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Polyhedra Collection
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
Author(s): Math Forum,V. Bulatov

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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
Author(s): Liza Gross

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Copyright 2001 Exploratorium.

Energy Flow
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.
Author(s): Creator not set

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2003 WGBH Educational Foundation. All rights reserved.

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
Author(s): Iowa Public Television. Explore More Project

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Copyright 2004, Iowa Public Television.

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.
Author(s): Ken Roy

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Permission to reproduce content is granted in advance under the following circumstances: (1) All educators may reproduce up to five copies of an NSTA article for personal use only. This does not inclu

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
Author(s): Bob Riddle

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Permission to reproduce content is granted in advance under the following circumstances: (1) All educators may reproduce up to five copies of an NSTA article for personal use only. This does not inclu

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?
Author(s): Math Forum

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Inquiry and the National Science Education Standards: A Guide for Teaching and Learning
This book explores the dimensions of teaching and learning science as inquiry for K-12 students across a range of science topics. Detailed examples help clarify when teachers should use the inquiry-based approach and how much structure, guidance, and coaching they should provide. The book dispels myths that may have discouraged educators from the inquiry-based approach and illuminates the subtle interplay between concepts, processes, and science as it is experienced in the classroom. Inquiry and
Author(s): Creator not set

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Arithmetic and Algebra
More than 110 games or puzzles having to do with arithmetic or algebra, with extensive discussions and solutions. Most require a browser capable of displaying JavaScript or Java.
Author(s): Math Forum,Interactive Mathematics Miscellany and

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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
Author(s): Associated Press,Chris Kline,Jim Moret,Joie Chen,L

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Copyright 1997 Cable News Network, Inc. All Rights Reserved.

Science Friday Online!
This is an online companion to Science Friday, a weekly science, technology, and environment news radio program. The site includes articles about the weekly program, video, and blog links. A podcast of the program is also available.
Author(s): Creator not set

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Matter: Atoms from Democritus to Dalton
This web page provides an overview of atomic theory from Democritus to Dalton and reviews John Dalton's 4 basic theories on matter. The page is also available in Spanish.
Author(s): Creator not set

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For educational use per the terms and conditions described in the Visionlearning, Inc. terms of use statement found at http://www.visionlearning.com/docs/terms.php

Sketches of the history of Electromagnetics
This website outlines the history of light, electricity, magnetism and electromagnetic theory, placed in a linked timeline order with corresponding biographical sketches. It includes events from antiquity to 1933.
Author(s): Jeff Biggus

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Copyright, Jeff Biggus: hyperjeff@mac.com

Salt of the Early Earth
This astrobiology news article analyzes the role salt played in the evolution of life on Earth. It explains why scientists have long assumed that life originated in the sea and describes the history of water on Earth in relation to the origin of life. Leading scientists contribute information about the significance of anaerobes, halophiles, methanogens, and the depositional environments of sedimentary rocks that hold Precambrian microfossils. They also suggest that we should extend our search to
Author(s): Creator not set

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Copyright 2009, Astrobio.net

Adding It Up: Helping Children Learn Mathematics
Adding it All Up explores how students in pre-K through 8th grade learn mathematics and recommends how teaching, curricula, and teacher education should change to improve mathematics learning during these critical years. The committee identifies five interdependent components of mathematical proficiency and describes how students develop this proficiency. With examples and illustrations, the book presents a portrait of mathematics learning: Research findings on what children know about numbers b
Author(s): Mathematics Learning Study Committee, National Res

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Metadata is copyrighted by the National Academy of Sciences, 2005. NSDL may modify, reformat and redistribute metadata to function within NSDL systems, services and partners. Resource terms of use: Co

Teacher's Toolkit : Two-tiered assessment
Developing good instruments that can be used to assess what students really know about scientific content is one of the most difficult tasks facing teachers in middle school classrooms today. However, two-tiered tests can be an effective solution to this increasing problem. Two-tiered tests are written assessments that not only ask students for an answer to a problem, but also require students to explain the reasoning behind their answer.
Author(s): Victor Sampson

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Water reclamation plant
In this video clip, students see how wastewater is treated at a water reclamation plant. One of the plant's operators gives Bob the Vid Tec (a children's programming host) a tour of the plant, describing along the way what happens at each step in the water treatment process. For example, the operator explains that microorganisms are used to consume human waste in the biological nutrient removal step. Bob also talks with another plant operator about why kids should learn about wastewater treatmen
Author(s): Johns Hopkins University. Center for Technology in

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Copyright Maryland Public Television and Johns Hopkins University Center for Technology in Education.

Science News For Kids
This resource is meant to enhance the usefulness of Science News in the middle-school classroom and offer recreational reading and activities for students interested in science. It is comprised of six zones: a weekly brainteaser for those who enjoy solving and inventing puzzles, entertaining science-fiction composition exercises for those interested in writing, and weekly science fair profiles and tips. The GameZone contains a small selection of logic and memory games, implemented as Java applet
Author(s): Creator not set

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Copyright 2003 Science Service. All rights reserved.

Molecular Clocks : Proteins That Evolve at Different Rates
From The Human Evolution Coloring Book by Adrienne Zihlman, four different proteins from humans and horses are compared in this graphic and article, and the reasons each protein evolves at its own characteristic rate are discussed. Each protein is useful for measuring evolutionary change over a different time scale.
Author(s): Creator not set

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The Human Evolution Coloring Book, Second Edition, by Adrienne Zihlman, produced by Coloring Concepts Inc. and published by HarperCollins, New York

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.
Author(s): Bob Riddle

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