History topics: Babylonian mathematics
This website contains an overview of Babylonian mathematics, with links to in-depth analyses of Babylonian numerals and Pythagoras?s theorem in Babylonian mathematics. The history of zero covers Mesopotamia, Greece, India, the Mayan people in Central America, China, and Europe. Links also give access to bibliographies of mathematicians, such as Cardan, Ch'in, Bhaskara, and Brahmagupta. Examples of written numbers using the cuneiform symbols in the sexigesimal system are included. Other terms: al
Author(s): Edmund Robertson,Joint Creator

Solar heating and cooling
This reading from a site about the future of energy introduces students to passive solar design for homes. The reading describes design elements that are used for passive solar heating and cooling. For example, reflective coatings can be applied to roofs, windows, and exterior walls to help cool houses. The reading recommends that those interested in passive solar design consult an architect. Copyright 2005 Eisenhower National Clearinghouse
Author(s): Iowa Public Television. Explore More Project

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

Who Needs Algebra? Everyone! : Northwest Teacher, volume 6 number 1
Learning algebra doesn't have to be painful, and researchers are finding that the process is easier if children are introduced to algebraic reasoning early on. This issue of NW Teacher points out that students who begin learning algebra at the elementary level have a stronger foundation for higher-level mathematics. Algebra also helps pave the way for college and increased career opportunities. This issue helps schools explore new ways of bringing algebra to all students.
Author(s): Bracken Reed,Claire Gates,Leslie Blair,Amy Coyle

Positive Linear Function Machine
This activity allows the user to explore simple linear functions; the function is determined by looking for patterns in the outputs.
Author(s): The Shodor Education Foundation, Inc.

14 Writing Strategies
That a relatively small piece of writing such as Albert Einstein's three-page paper of relativity could be so important certainly illustrates the significance of writing to science. A science class is not complete unless it helps students learn to think like scientists, and writing is an essential part of such thinking. This article enumerates fourteen writing strategies that will encourage critical thinking skills and provide legitimate, purposeful writing practice by promoting solid science le
Author(s): Amy Broemmel,Thomas Turner

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

Discover areas of highest plant productivity in the ocean
This Earth science animation presents a series of monthly satellite images that track global levels of phytoplankton throughout a year. The introduction explains that the color-enhanced images indicate chlorophyll concentration in the oceans. In addition, the text briefly describes the significance of these concentration values. Students are encouraged to analyze changes in plant productivity that occur over the course of a year. Movie control buttons allow students to repeat, pause, or step thr
Author(s): TERC. Center for Earth and Space Science Education

Magnetism
This webpage is part of the University Corporation for Atmospheric Research (UCAR) Windows to the Universe program. It describes the nature and configuration of magnetic fields, which are the result of moving electric charges, including how they cause magnetic objects to orient themselves along the direction of the magnetic force points, which are illustrated as lines. Magnetic field lines by convention point outwards at the north magnetic pole and inward at the south magnetic pole. The site fea
Author(s): University Corporation for Atmospheric Research Wi

Water Science for Schools
This U.S. Geological Survey (USGS) water resources site provides comprehensive coverage of water related issues, and includes several interactive quizzes and activities for children. Here you will find information on many aspects of water, along with pictures, data, maps, and an interactive center. Topics include: Earths water, Water basics, Water use, Water Questions and Answers, Activity center, Picture Gallery, Glossary, and Related Water Links. A special topics section tackles current proble
Author(s): Creator not set

Energy Transformation on a Roller Coaster
This webpage offers a discussion of work, energy, and force on a roller coaster as it goes through a loop in the track. It includes an animated image of the roller coaster with appropriate data for each point in the track. A multiple choice practice question using the relevant equations is also available.
Author(s): Creator not set

Create a Graph
Students will learn how to create area, bar, pie, and line graphs. They are provided with information about what each type of graph shows and what it can be used for. Students are given an example of each type of graph, but they can create graphs using their own data in the interactive tool.
Author(s): National Center for Education Statistics

Blue Planet: Sea Vent Photo Gallery
These nine "sea vent" inhabitants were captured on film with a Woods Hole Oceanographic Institution high definition underwater imaging system from the Deep Submergence Vehicle Alvin. A description of each animal is provided. The vent is in the Pacific about 1,000 miles south of San Diego, California.
Author(s): Creator not set

Energy : An Introduction
This article presents an introduction to the forms and changes in energy. This lesson discusses potential and kinetic energy as well as introducing the 1st and 2nd law of thermodynamics.
Author(s): Anthony Carpi

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.
Author(s): Anthony Carpi

Spaghetti Bridge
Civil engineers design and construct structures such as buildings, dams, and bridges. We can explore the field of engineering by making a bridge using spaghetti. This bridge is then tested based on the weight it can carry without breaking.
Author(s): K-12 Outreach Office,

Life in the Cold and Dark: Penguin Adaptation
In these two activities, students investigate animal adaptations to a cold environment, specifically how they keep warm and incorporate key findings by designing an organism well-adapted to this environment.
Author(s): Creator not set

National Centre for Biotechnology Education Genetically Modified Food
Following the recent decision of Bayer CropScience to withdraw its herbicide-tolerant fodder maize, Chardon LL, the soonest we are likely to see commercial cultivation of any GM crop in the UK is 2008 . This mini-site examines the history of GM food in the UK. This content is appropriate for teachers or as an extension.
Author(s): Creator not set

Polar Bears International Photo and Video Gallery
This page links to video intervews of the researchers and photographers, videos of polar bears taken with the polar cam, and images of polar bears.
Author(s): Creator not set

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.
Author(s): Kathleen Schrock