Vier op een rij : Maaltafels van een, twee, tien en vijf oefenen Met dit spel oefenen de leerlingen de maaltafels van één twee, tien en vijf. Je speelt dit spel zoals je vier op een rij zou spelen:
Met dit spel oefenen de leerlingen de maaltafels van één twee, tien en vijf. Je speelt dit spel zoals je vier op een rij zou spelen:
This NASA website promotes its recently established Science Mission Directorate, which is "closely involved in the Vision for Space Exploration through its support of science that both enables, and is enabled by, NASA's exploration activities." The website breaks down the Directorate's initiatives into three categories: Earth-Sun System, Solar System, and Universe. Visitors can find fantastic images and extensive, clear information on NASA's countless missions and also scientific background. Edu
Learning Technologies Project
The NASA Learning Technologies Project (LTP) showcases many initiatives that "incorporate NASA content with revolutionary technologies or innovative use of entrenched technologies to enhance education in the areas of math and science." The Education Resources section features three software titles that can be freely downloaded, mainly consisting of three-dimensional visualization activities for planets and the solar system. Extensive information about current projects under development is given,
Earthguide is an educational resource for students and teachers developed by the California Space Institute at Scripps Institution of Oceanography and the University of California San Diego. Features include in-depth stories, brief topics, and news -- all related to a variety of oceanic and atmospheric science subjects. The section of links and resources is quite valuable, with a large number of links organized by topic, many with brief descriptions.
Beat the Heat at Arizona Science Center
TryScience.com offers an unique energy learning activity called Beat the Heat. This fun and interactive lesson lets users design a house in a particular location and test it in various seasons to best utilize the heat of the sun for energy efficiency. You can choose various types of roofs, windows, solar panels, skylights, and plants, as well as the direction your house faces, to see how each of these variables effects your home's efficiency. This in-depth and intriguing exercise teaches some ve
The New Zealand Geographic Place Names Database
The New Zealand Geographic Place Names Database, offered by Land Information New Zealand, contains more than 40,000 official and non-official place name entries from the mainland of New Zealand. Searches can be done by partial name or by location; results yield a description of the place (such as a beach or hill), its district, and its latitude/longitude. Additional searches can also be done to include all place names surrounding an area. Although intended to assist in the production of core top
Ocean World: Coral Reefs
Texas A&M University presents Ocean World, a Web-based educational resource for oceanography. The feature on coral reefs has the most direct life sciences application, with easy-to-navigate sections about the coral animal, coral reefs as the rainforests of the sea, symbiosis, ecosystem services, and coral reef threats and conservation. The Web site also includes a handy hypertext glossary, an interactive quiz, and annotated links to interesting Web sites, including sites that provide real-time r
A Net Meltdown is Inevitable
On October 22, 2002, an attack on the thirteen servers that act as the backbone of the Internet was carried out, briefly disabling nine of them. This drew attention to the often criticized organization that operates these servers, the Internet Corporation for Assigned Names and Numbers (ICANN). This news article argues that bad practices and insufficient safety precautions of ICANN may soon lead to a more successful attack, one that could cripple the Net. It also stresses the importance of refor
The Complete Morris's British Birds 1891
Individually produced by Ash Midcalf, this Web site contains digitized images from the Reverend Francis Orpen Morris's A History of British Birds, published in 1891. Artist-naturalists like Morris and Audubon created painstakingly true-to-life depictions of the planet's flora and fauna in the days before reliable photography. Visitors to this Web site can browse through pages of thumbnails, choose from the complete list of images, or use the search feature to view any of the 394 prints available
UK Particle Physics, Astronomy, and Space Science (PPARC): Frontiers
The Frontiers publication offers the latest news and activities of the Research Council's funded projects and the UK Particle Physics, Astronomy, and Space Science's (PPARC) funded scientists. Produced three times a year, each issue is easy to navigate with quick links to the space science and particle physics articles on the Contents page as well as a keyword search. The website offers archives of the publication since 1997. Each issue contains five sections: the Contents, Editorial, Update, Fe
Brainpop describes itself as the leading producer of educational animated movies. Their Web site has a science page that currently contains sixty-five animated movies, with a large portion of them being physical science related. Each subject contains a 3-4 minute Movie, an Interactive Quiz, an Experiment, a Comic Strip, a How-to hands-on application, a Timeline, and a printable Activity Page. Visitors can play three movies per day for free (all of which begin by a somewhat annoying ad for subscr
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
This website contains the techniques, tips, and secrets used by master teachers of mathematics. Based on research, the authors argue that rote memory is one of the least effective ways of memorizing. They offer more effective strategies for teaching students the times tables and some strategies for helping with memorization, such as using rhyming words, pictures, stories and other activities. Much of the material here is drawn from a book called Memorize in Minutes: The Times Table, which is ava
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.
The Nitrogen Cycle : Of Microbes and Men
This module provides an overview of the nitrogen cycle and the chemical changes that govern the cycle. It includes explanations of how nitrogen is used by organisms and how humans effect the cycle.
Fractions with Unlike Denominators
Find the sum or difference of two fractions with unlike denominators using graphic models. Find the least common denominator graphically.
PBS provides students in grades 4-7 with oodles of science fair ideas and a science fair tip sheet in this section of the DragonflyTV web site. Overviews of investigations from the television show are offered to help students hone in on an interesting topic and create their own science fair project. Each overview relays a question that a child asked on television, the main steps in his or her experiment, and the results. The overviews also include ideas for further investigations that build on t
Quick take on those dicey decimals!
Understanding decimals is a must and practice with them a basic necessity. These digital resources feature games, lessons, and interactive experiences that encourage understanding and practice at varying levels of mastery.
National Oceanic and Atmospheric Administration : Climate Homepage
This National Oceanic and Atmospheric Administration website provides climate information and data. This site offers a variety of product links to climate monitoring, climate at a glance data, U.S. drought assessment, global climate change information, weather observation stations and more. Users can also link to organizations which participate in climate research such as the National Climate Data Center, Ocean Climate Laboratory and the National Weather service. This site is an excellent resour
How can a Ping-Pong ball be made to bounce higher without throwing it downward harder? This material is part of a series of hands-on science activities designed to arouse student interest. Here students investigate energy transference and momentum by simultaneously dropping a Ping-Pong ball sitting directly above a golf ball and measuring the bounce height. The activity includes a description, a list of science process skills and complex reasoning strategies being used, and a compilation of appl