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Hands On Mineral Identification helps you to identify over 14,500 minerals! By M. Darby Dyar, Ph.D. See our DVD collection.

Leonardo Fibonacci

Leonardo Fibonacci was an Italian mathematician who lived between 1170-1240. He travelled a lot on business with his father and was exposed to many different mathematical techniques used in western Europe, Asia, and northern Africa. Fibonacci accumulated techniques in arithmetic, algebra, and geometry during his travels, and compiled them in books, for people to learn without having to travel as he had. His writings also introduced Arabic numerals into European mathematics.

Fibonacci made significant contributions to mathematics himself, in number theory and in recursive sequences. He is most famous for the sequence bearing his name, in which each number is the sum of the previous two.


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Learn about Earth and space science, and have fun while doing it! The games section of our online store includes a climate change card game and the Traveling Nitrogen game!

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Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Joanna Hubbard

This is my 10th year with the Anchorage School District as a science teacher, currently working with K-12 teachers around the district rather than in a classroom. My most recent classroom time was as a...more

Thomas Edison

Thomas Edison was an American inventor who lived between 1847-1931. He patented 1093 inventions in his life, including the incandescent light bulb, which provided a practical means of electical lighting...more

Williamina Fleming

Williamina Paton Stevens Fleming was a Scottish-American astronomer who lived from 1857-1911. She discovered 10 of the 24 novae then known. Novae are stars whose brightness suddenly increases then slowly...more

Jocelyn Bell Burnell

Jocelyn Bell is a British astronomer who was born in 1943. She discovered pulsars in 1967. Burnell was a graduate student at Cambridge University when she discovered pulsars. Her advisor, Tony Hewish,...more

Understanding Sharks

This expedition has been an exciting adventure for the whole family. Every day started by waking up with the sunrise, diving during the day, contemplating the sunset and working on the project. Being in...more

Wangari Maathai

"We have a special responsibility to the ecosystem of this planet. In making sure that other species survive we will be ensuring the survival of our own." - Wangari Maathai Wangari Maathai, a Kenyan scientist,...more

Penguin Colonies

This is Ross Island, a volcanic island embedded in the Ross Ice Shelf, Antarctica. Adelie penguins are found all around Antarctica, but we will be filming the documentary at the breeding colonies shown...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA