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Last checked 3/10/2024
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- Itty Bitty Blackboard
has short articles about the science in the headlines.
- Science Daily has daily science news.
- New York Hall of Science
- Earth and Sky is a daily science radio series. You can listen to an article using RealAudio or you can read the transcript. Also shows what's in the sky each night.
- Key Sites "Hundreds of the best science sites, reviewed and updated daily by New Scientist magazine, Internet features and the chance to chat with the net editor."
- The Last Word has questions and answers on various scientific phenomena. For example, you can discover why certain kinds of typos are more common, or what the cause of death is in a crucifixion.
- Explore Science is graphically extensive and can be slow. However, it is very interesting. And when you're done there, try some more at the Gallery of Interactive Geometry
- New Scientist is readable science of all kinds.
- Quantum Mechanics is a lot more interesting than it sounds.
- Time deals with clocks and telling time in a history of timeworks.
- Useless Information 100 facts that are uselessly interesting.
- Useless Knowledge has little known facts.
- Fingerprinting
- Archimedes
- The Galileo Project is all about the man.
- How Stuff Works - refrigerators, batteries, cell phones, microwave ovens, Van de Graff generators, and other common, household things.
- Popular Science
- Einstein
- Einstein Quotes
- Einstein Year 2005 is a nice site with experiments, articles, games, links, etc.
- Einstein is the companion site to the PBS show, "Einstein's Big Idea".
- Albert Einstein - includes original notes, letters, etc.
- Spacetime is an explanation of relativity.
- Smithsonian Science is the official Smithsonian Institute site for science.
- Explore Science uses the Shockwave plugin to explore various areas of science.
- Boston Museum of Science
- The Science Museum in the UK.
- TryScience requires Java and Javascript. There are a number of experiments that you can carry out with household materials.
- The Mad Scientist Network has great questions and answers. You can submit your question for an answer from a real mad scientist (it's not that they're very angry, they just belong to the Mad Scientist Network).
- Bug Bios has great photos and info on bugs.
- Science Master has a wealth of information on science subjects including downloadable videos.
- Popular Science's Best of the Web is a collection of 50 great science sites.
- Science Photos includes a search engine to find the photo of the scientific phenomena of your choice.
- Science Toys You Can Make With Your Kids - no recipes for napalm but the site does have a lot of other neat things you can make that demonstrate scientific principles.
- Science Toymaker - some interesting toys that you can make, site has explanations of the science behind the toy.
- Rat Lab is for all of us mad scientists. Now, don't hurt yourself.
- Live Science is a great collection of science material presented in a very accessible manner. There a lot of great photos.
- The Anomalies of Water is an article on the weirdness of water.
- Stephen Hawking - a brief history
- Stephen Hawking Lectures - transcripts
- Live Science - site has a bunch of easily digestible stories,
facts, myths, etc.
- EduPodder has podcasts for upper level grades and just for keeping oneself generally educated.
- Atmospheric Optics - all about rainbows, sun dogs, anti-crepuscular rays, and other effects of light interacting with matter.
- Science Madness- a collection of old science textbooks and treatises that you can download and read in PDF format. Also includes documents from the Los Alamos Project.
- Live Science - is a science portal. Read about all kinds of funky science in the news. Exploding kangaroos, paralyzing light beam weapons, and other recent research findings that are interesting but not real geeky.
- Science Hack - has videos (utube) that have been screened for relevance in various science categories like physics, chemistry, etc.
- Robert Krampf - The Happy Scientist is a great science site and has a number of quick science demonstrations like using a pinhole in paper in case you don't have your glasses.
- Darwin Online Project has his complete works online, including manuscripts and other written material.
- Encyclopedia Smithsonian: Science and Technology is great browsing.
- WorldWide Telescope is a free download from Microsoft that simulates having many different and powerful telescopes at your disposal. Worth checking out.
- Science Hack - has videos (youtube) that have been screened for relevance in various science categories like physics, chemistry, etc.
- Kathy Schrocks Guides is a collection of sites for educators categorized by subject area.
- udacity - site has a small number of free, online courses mostly in technology.
- Coursera – free higher ed courses online – about 120 courses are available at this time.
- How to Signup For Free Courses at Coursera – mostly free higher ed courses online.
- iversity – free MOOC (massive open online course) courses online.
- Kahn Academy - free, online learning.
- undark explores the ethical side of science such as the use of genetically engineered animals and the use of pesticides on marijuana crops.
- ZME Science is a science blog that prides itself in presenting its articles in a less complex manner rather than than trying to make it rocket science.
- PBS NOVA YouTube Videos - over 100 full length copies of the PBS NOVA series.
- Sky at a Glance
- from Sky and Telescope, shows you what is in the night sky for each day of the current week.
- What's Out Tonite tells you what is viewable in the night sky.
- Spot the Station This is the NASA site to help you spot the ISS. You click on a map location and it will give you a list of the times and locations for the next sightings at that location.
- Skymaps - gives you a sky map in pdf format that you can print out.
- Heavens Above will give you, in your local area, the best times to spot satellites, iridium flares, the space shuttle, and other heavenly sights. Too bad they still expect you to understand algebra to make sense of where to look. You can register or not as best suits you.
- Astroviewer - is a java applet that lets you see the night sky and lets you interact with it to identify objects.
- JPL Mars photos from the Curiosity Rover - raw images
- JPL Mars photos from the Perserverance mission - raw images
- The Near Earth Asteroid Rendezvous (NEAR) "The Earth photos feature spectacular views of Antarctica girdled by beautiful polar weather patterns. A movie of the encounter will be posted shortly."
- The is a pleasant, and informative, presentation of the planets.
- NASA's Planetary Photojournal is a compendium of photos of all of the planets and their moons. Excellent quality although it could be easier to navigate.
- NASA Gallery is the best place to start if you want space images.
- NASA Images and Videos

- NASA Images Database
has over 300,000 images in a searchable database. You can browse, too. The site uses thumbnails for speed. Check out some very strange looking experimental aircraft that we paid for with our taxes.
- NASA Earth Observatory
has great pictures of Earth.
- DSCOVR:EPIC
has pictures of Earth that are 12 to 36 hours old. Shots are taken from the Earth Polychromatic Imaging Camera (EPIC).
- Western Aerospace Museum page
has a feature on Women in Space. Also has a very neat, 360 degree picture of Mars.
- NASA Video and Photo Library
- JSC - the Johnson Space Center
- The Webb Observatory
- The Best of the Galileo Project
is a collection of great pictures taken during the Galileo mission.
- Visit the NASA site at least once. Check out the pictures (if you can be patient enough to wait for them to download). The site also has downloadable movies and audio clips. Check out the Galileo Project.
- Mars 2020 from NASA.
- Mars 2001 Odyssey Thermal Emissions Imaging System - shows pictures of the surface of Mars. The pictures change often.
- Google Mars is a Google map of Mars that you can zoom in.
- Bill Nye, the Science Guy can usually explain things in easy to understand language.
- Hitchhiker's Guide to the Moon shows you the various features of the moon. Not the easiest site to navigate but the material is interesting.
- Space Zone Sponsored by Warne International Communications, this site is devoted to the space program. Features video or the week, forums, schedule of events, etc.
- Shuttle&Mir photos. Great pictures and info about each mission.
- Astrological Photos by an amateur photographer (Jeff MacQuarrie). View them to the strains of Pink Floyd's "Echoes".
- Peoria Astronomical Society" ...with a calendar of the month's celestial events, galaxies of (undescribed) links, constellation notes, and a slew of data on the solar system's most prominent bodies. You also get a beginner's guide to stargazing, a fascinating article on black holes, ..."
- Space Weather has a huge amount of info related to sky and space.
- Heavens Above has coordinates for satellite observations.
- Skyhound shows where things are in the night sky.
- The Mercury Project or "The return of John Glenn".
- The Solar System
Sponsored by National Geographic, this is a great site for various views of the planets and solar system. The site includes movies and animations.
- We Choose the Moon is a great history of the American project to get to the moon.
- The Record of Apollo has the complete transcripts of all communications made during Apollo missions 11 to 17 with some RealAudio clips.
- Apollo Image Gallery has some great images that have not been seen in other collections.
- Apollo 18
- The Space Sciences Laboratory at NASA's Marshall Space Flight Center This is not just another space center. There is a variety of material here that is interestingly presented.
- Eyes on the Earth is a view from space of the Earth and its climate. The Earth turns beneath you and the app tracks satellites as they orbit.
- The Hubble Site has amazing pictures as well as everything you might want to know about the telescope.
- Space Telescope Science Institute has great astronomy pictures including the classic "Giant Twister". Various resolutions and sizes to fit your needs.
- AstroPix Picture of the Day also has links to archived photos.
- Space Shuttle Era has everything you wanted to know about the shuttle and its missions.
- What's Out Tonite tells you what is viewable in the night sky.
- American Meteor Society
- Astronomical Images has great photos of astronomical phenomena.
- The Inconstant Moon, quoted from Shakespeare, is an interesting tour of the moon - each day it shows points of interest that will be visible that
night.
- Space.com is a general space site. It also has a collection of recent tabloid articles about aliens.
- The Sky at Night is a companion site to the BBC broadcast by Patrick Moore that has been running for 35 years. Various topics related to space. Also has a section on buying a telescope.
- Heavens Above will give you, in your local area, the best times to spot satellites, iridium flares, the space shuttle, and other heavenly sights. Too bad they still expect you to understand algebra to make sense of where to look. You can register or not as best suits you.
- Skymaps lets you download a map of the sky in a number of formats. Includes a list of things to look for in the evening sky.
- Best Android Astronomy Apps This 2019 article reviews a number of apps that help you enjoy the night sky.
- Women at NASA has profiles of the women who currently work at NASA along a history of women working in "new frontiers".
- The Solar and Heliospheric Observatory has some great pictures of the sun and solar phenomena.
- Space News is an excellent stop for all your space news needs.
- Sightings is a NASA site that tells you when satellites and space stations will be visible in the night sky.
- International Space Station Tracker
- Spot the Station This is the NASA site to help you spot the ISS. You click on a map location and it will give you a list of the times and locations for the next sightings at that location.
- Astronomy Picture of the Day is a NASA site that has a different picture each day of an astronomical phenomena. The text has links to related information which adds to the depth of the material for each day. There is an archive.
- Visible Earth is full of great pictures taken from space. The pictures are grouped into subject areas such as volcanoes, ice, atmosphere, vegitation, etc.
- Galileo is full of information on the Saturn system collected from the Galileo project. Be prepared to spend some time here 'cause the pictures are great.
- Aurora has pictures of the Aurora Borealis.
- Astronomy Links - searchable index with categories
like astronomy, light polution, planets, binoculars, etc.
- Moon Trees This site tracks the trees grown from seeds taken on a moon mission.
- Explore Mars Now is a high tech site about colonizing Mars. The site won a Webby award.
- HiRise - High resolution photos of Mars from NASA.
- Space Sounds - listen to the history of space exploration.
- Clear Dark Sky - shows hourly forecast of how clear the sky will be - useful for star gazing or photography.
- Cape Canaveral Virtual Tour is a rather extensive visual tour, with a narrative, of the old Canaveral site.
- Space Daily is the go-to site for news about what's happening in the space space.
- SpaceWeather - gives data on the solar winds, radiation from solar flares, aurora alerts, and sunspots. The site has some other more useful information about what's happening in the sky.
- Ask the Skyguy The Skyguy answers questions about astronomy in little movie clips.
- The Virtual Telescope shows you what a robotically controlled telescope sees. Various 'events' are spotlighted and the site includes interesting articles related to space.
- SkyCal Print a calendar that shows celestial events such as moon phases and eclipses.
- Bad Astronomy - from the SYFY network folks - presents current issues in astronomy.
- Ask the Experts
is a great site sponsored by Scientific American. You can actually send in a questions and get a response from their scientists. They also have a great archive of questions and answers.
- RiverDeep
- educational site with very useful information about physics, math, language, etc.
- MIT's OpenCourseWare Project
has over 500 courses online with syllabus, notes, slides, etc.
- Free Educational Sites (2020) This LifeHacker site reviews free educational sites. The article also covers free educational apps predominately aimed at the younger learners.
- Academic Info has a bunch of links to education resources.
- Learning Sites This site collects links to material that would be worthwhile additions high school educators' curricula.
- SciCentral This is a gateway to all other science sites. The intent here is to "...centralize access to the most valuable scientific resources online..."
- FREE Federal Resources for Educational Excellence. These are sites that can be used as teaching tools or resources. Sponsored by Dept of Education.
- Free Online Courses is sponsored by the Mining Co. and is a list of links to free, online courses.
- Ed Surf has links to free education on the Web.
- Free-Ed Net - free course work in tech, electronics, health, math, and a few other areas.
- Science Friday is the companion site to a radio broadcast show. It has short articles and RealAudio files of the broadcasts.
- IQ Test has info about IQ testing as well as a test you can take yourself in case you have any doubts about how smart you like to think you are.
- Explorations in Learning and Instruction: Theory into Practice is a collection of information on some 50 theories of learning and education.
- Experimental Design
- Education World is designed for teachers. Includes site reviews, news, trends, books, and lesson plans.
- Nova's Teachers Site has material from the TV programs available to teachers along with class ideas and activities.
- EduSeek lets you search in various subject categories for educational sites.
- 10 Free Online Education Resources from the PCMag folks.
- Exploravision Toshiba has been running this program for over 10 years. They give $10,000 prizes to the kids who come up with the best new idea.
- NetHappenings' CyberPlayground has a variety of newsletters that announce new educational sites. The lists are organized into various categories. Kind of a strange site to navigate.
- Brittanica's Best Sites of the Web is a collection of links to educational sites. Good browsing.
- New York Times Learning Network - for grades 3 to 12 - news material that you can work into lesson plans.
- MarcoPolo lesson plans, reviewed Web sites, student activities, etc.
- Best WebQuests has a collection of online learning sites organized by topic.
- Federal Resources for Educational Excellence FREE - has links to all kinds of online material organized by subject.
- School Bytes is aimed at helping high school and college students. It has sections like 'Plotbytes' (kind of Cliff Notes), 'Mathbytes' (how to solve mathematical problems), and 'Historybytes'.
- The Educator's Reference Desk has a lot of teaching plans for pre-K thru 12.
- Academic Earth has a collection of professorial lectures on a variety of subjects.
- Encyclopedia of Earth is an ambitious site that has material loosely related to earth sciences and biology.
- Saylor.org: Free Education has a lot of free, undergraduate level courses.
- KQED Education is a site for teachers sponsored by a broadcaster in California. The site has resources and a newsletter.
Math/Geometry:
- Cool Math has sections for teachers, parents, and students. Many subject areas (almost too many) in small lessons. Includes geometry, algebra, fractions, calculus, etc.
- Math Goodies covers about 50 math and geometry topics in short lessons. Students can also enter questions and get answers from teachers.
- Web Math actually walks you through mathematical processes like long division.
- Math Mistakes has discussions of mathematical misconceptions.
- Weisstein's world of mathematics has a little bit about a lot of mathematical topics.
- WebMath helps you out with solving math problems.
- Internet Resources for the Mathematics Student - for college level students and instructors.
- Gizmos help illustrate math concepts with Shockwave Gizmos from the Explorelearning folks.
- Classroom Resource Bank University of Illinois at Urbana-Champaign has created a number of online math courses for teachers at the secondary level.
- Algebasics - Algebra lessons
- Kathy Schrock's Math Guide has a bunch of sites for Math instructors.
- Websites that Teach Math from general arithmetic to algebra, trig, calculus, and statistics.
- Websites that Teach Everyday Math - 20 sites.
- Best Collection of Printable Math Worksheets is a excellent collection of worksheets for various grade levels.
- MathPickle - from their site: MathPickle.com is a free online resource of original mathematical puzzles, games and unsolved problems for K-12 teachers. It is supported by the American Institute of Mathematics.
- Lockdown Math This is a series of YouTube presentatons on math related subjects.
- 20 Websites to Learn Math This MakeUseOf article briefly reviews about 20 sites to help you learn math - from general math thru algebra and into calculus.
History:
- The History Net is a great site for history fans.
- Best History Sites is a collection of great history sites.
- Civil War Maps is a great site with copies of original civil war maps. A thumbnail size graphic of the map is displayed and you can zoom in on an area by clicking on it. Nice interface.
- Antietam on the Web has official reports from the civil war officers that fought the battle, among other information.
- Sherman's March
- Smithsonian Institute's Civil War Exhibit
- Torn in Two: 150th Anniversary of Civil War
- Talking History has audio lectures on how history is recorded and how we remember it.
- HyperHistory This is a great application of hyper links. You can see what events were happening at the same time at a point in history. You can select the year and the geographical area.
- The History Channel is the companion site to the cable network series.
- Monticello - Thomas Jefferson's mansion. Includes biographical tidbits about the man.
- Pyramids: The Inside Story from the PBS folks.
- Martin Luther King This is a collection of essays, photos, and audio on Martin Luther King in the archives of the Seattle Times.
- Women in Aviation
- History's Women - great women throughout history.
- History Speeches are snippets from historical speeches - sponsored by the History Channel.
- Wright Brothers Photo Archive has great photos of the Wright experiments.
- Abraham Lincoln Papers, from the library of Congress, has thousands of pictures and transcripts of speechs.
- Collected Works of Abraham Lincoln
- Teaching With Historical Places is a history education site that has lesson plans based on historical places. Brought to us by the National Parks folks.
- The Great Seal certainly has more information than you knew about the Great Seal of the USA.
- The History Buff has 400 years of history as seen in the media. Read about historical events in the actual newspapers that reported them. Audio and video clips are also available.
- Experiencing War is a collection of stories as told by veterans.
- Perilous Fight is about WWII - companion site to PBS TV broadcast.
- WWI - how it started, who's who, posters, memoirs, etc.
- Lewis and Clark
- The Gutenberg Bible This site has images of an original Gutenberg bible with commentary and historical notes.
- The Electric Franklin - great site for Ben Franklin fans.
- Ben Franklin This site has a lot of material on Franklin - sponsored by USA Today.
- Today in History , from the Library of Congress, gives a short tidbit of what happened today sometime in history.
- Mark Twain Project - has all kinds of material on Mark Twain.
- Smart History is an electronic, interactive art history book.
- PA History is provided by Penn State's library system.
- A Guide to the War of 1812 from the The Library of Congress.
- Hidden City of Philadelphia Little-known stories of Philadelphia history and social life.
Also, see Sites with Social Value on the Biglist.
Chemistry:
- Periodic Table This table has a bunch of info linked to each cell.
- Nuffield Foundation Practical Chemistry - educational material about chemistry.
Statistics:
- The Wizard of Odds is all about odds and gambling. Includes some heavy duty gaming theory.
- Data And Story Library Statistics - DASL - explores various statistical measures through the use of stories.
- Statistics Every Writer Should Know explains basic statistical concepts.
- Statistics for the mathematically challenged.
- Elementary Concepts in Statistics

- Probability Web - "a collection of probability resources on the World Wide Web (WWW). . . especially helpful to researchers, teachers, and people in the probability community."
- Introductory Statistics by David Lane of Rice University.
- Probability Tutorials is a collection of links to material that helps one understand probability.
- Center for the Teaching of Statistics The Center for the Teaching of Statistics at UCLA is concerned with both providing a resource for colleagues at their university but also for the statistics community in general.
- Misuse of Statistics is an article about the fundamentals of correlation and causality.
- Learn Statistics with these six free sites.
- Which Statistical Test is a review of statistical tests based on the goal of the test and the type of underlying data.
- Hyperstat is a review of statistical analysis presented as an interactive Web site. There are many hyper links, thus the title. There are also many demos of statistical principles.
- StatSoft is a statistical textbook presented by Dell.
- Stattrek has a lot of information on statistics including some calculators.
- Statistics Dictionary
Physics:
- Interactive Simulations for Physics and Math sponsored by the University of Colorado
- American Institute of Physics History Programs - AIP
- String Theory
- Atmospheric Optics explains the optics behind atmospheric phenomena. Short on pictures.
- Internet Plasma Physics Educational Experience uses videos to explain physics.
- HyperPhysics
 connects physics concepts to show how they interrelate.
- Principles of Physics via flash animations.
- Complete Text of Physics Textbook
- Richard Feynman Lectures has recordings of a dozen or so Feynman lectures on all sorts of advanced physics. Great educator and Nobel prize winner. Also helped develop the bomb.
- Feynman Diagrams from the Quantum Diaries blog.
- List of Physics Games is a list of about 50 downloadable games that simulate physics phenomena. Like pinball games.
- Physics Applets University of California has a collection of java based demos of physics principles.
- The Physics Front is a collection of material for teachers from the American Association of Physics Teachers.
- Physics Simulations - has a wide variety of simulators that let you tweak parameters to see what changes will result. Buoyancy, electricity, construction of atoms, etc. All java-based or can be downloaded.
- Leonard Susskind TED Talk mostly about string theory.
- The Feynman Lectures This is the complete series of Richard Feynman physics lectures. Amazing.
- So You Want To Learn Physics This is an article in a blog by Susan Fowler where she describes the books she believes will teach you college level physics. Each topic include links to great books for the material as well as books that cover the math required to understand the topic. The article is a treasure chest of links to great sources of physics material.
Biology:
- Insects has a library of insects of the day.
- The Biology Project, from the University of Arizona, is an online learning center for biology.
- Links to Biology Pages
- Bug Bios has great photos and info on bugs.
- is a history of the discoveries related to DNA.
- All About Honey Bees
- Exploratorium's Seeing Site is all about vision and illusion.
- Biology in Motion is a Biology quiz and game.
- What's That Bug helps you identify that critter that you are about to smush.
- The Jane Goodall Institute
- Spider Myths from Rod Crawford, Curator of Arachnids, Burke Museum
- Earth-touch has videos of animals.
- Get Body Smart - support site for teaching human anatomy and physiology.
- Paleiobiology Database Navigator The PBDB Navigator has mapped the location of every fossil in its database so you can see their location on a map. This is a very nicely designed application that displays a lot of information about the kind of fossils found in various areas around the world.
Social Sciences:
- Nukemap is a simulator that shows the extent of damage of a nuclear bomb by mapping it.
- Ben's Guide to Government, aimed at high schoolers, has explanations of the various branches of the government and election processes.
- The Big Myth examines myths in various cultures. The site includes ideas for teachers.
- Psychology Links
Other:
- Federal Reserve Bank
- What is the Federal Reserve System?
- My Classroom Economy has resources for teaching economics and finance.
- U.S. Treasury: Office of Financial Education has collected a set of resources for teachers of finance and related matters.
- Economics Lesson Plans sponsored by McRel. Other topics are also covered at the site.
- Physical Science Information Gateway is a search engine for material in the physical sciences (physics, geology, chemistry, astronomy, etc.)
- Scout Report Archives has older material from the Scout Report on business/economics, science, and social science.
- How Stuff Works - refrigerators, batteries, cell phones, microwave ovens, Van de Graff generators, and other common, household things.
- Semiotics - the study of signs.
- The Unmuseum has many interesting sections including UFO's, home experiments, the Seven Wonders of the World, etc. Very interesting site but a bit disorganized.
- Library of Congress - Portals to the World has links to a plethora of sites related to specific countries.
- Footnote TV - explains the real world events behind the actor's comments in TV shows
- Engineering is Elementary - engineering principles for elementary school level education.
- Electricity Tutorial is a site that explains the relationships between current, resistance, and voltage, along with Ohm's law, wattage, etc.
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