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Wichita State University: Eratosthenes
Learn all the about the life and major accomplishments of Eratosthenes of Cyrene--one of the most famous Greek mathematicians of all time.
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Explorable: Ancient Astronomy, Science and the Ancient Greeks
Discusses the influences of other cultures on ancient Greek astronomers, and the advances made by the Greeks. It highlights major astronomers and those who contributed important ideas from the 6th to the 2nd centuries BC, including...
Other
History World: History of Greek Science
Presents the history of Greek science from the 6th century BC to the 2nd century AD. Navigate using the menu on the left. Covers major figures in science and mathematics, their theories and beliefs, and the influence they had, as well as...
Science Education Resource Center at Carleton College
Serc: Calculating the Radius of the Earth
Science students often have difficulty thinking about large spatial scales. The purpose of the exercise is to redo Eratosthenes' calculation of the radius of the Earth using data from to sites in ancient Egypt. The excercise teaches...
Famous Scientists
Famous Scientists: Eratosthenes
Take a quick guide through the life and achievements of famous Greek mathematician Eratosthenes.
Children's Museum
Children's Museum: Field Guide to the Universe: Astronomers
Read brief biographies of astronomers who are grouped by time period.
Cornell University
Cornell University: Astronomy: Eratosthenes and Circumference
This site, which is provided for by the Cornell University, gives a description of how Eratosthenes used geometry to measure the circumference of the earth.
Other
Ancient Maps: Frames of the Greek World
Understanding that perceptions of the Greek world changed over time is important to reading Greek literature. The perceptions of Homer, Hecateus, Eratosthenes, and Ptolemy are presented as map frames at this site. Consider how Homer's...
Cornell University
Cornell University: Astronomy: Eratosthenes
Learn how Greek mathematician Eratosthenes used geometry to estimate the circumference of the Earth.
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: La Criba De Eratostenes
Reinforce your knowledge about prime and composite numbers. Geogebra plugin required.
Science Struck
Science Struck: A Scientific Explanation to What Causes Day and Night
Explains how the rotation and the axial tilt of the Earth are responsible for the phenomenon of day and night. Provides information about the Sun, the solar system, and the Earth, and how the circumference of the Earth was first measured...
Curated OER
Era Net: Eratosthenes
This site from EraNET provides a description of the contributions made by Eratosthenes to astronomy.
Curated OER
Era Net: Eratosthenes
This site from EraNET provides a description of the contributions made by Eratosthenes to astronomy.
Curated OER
University of St Andrews: Eratosthenes
This site, which is provided for by the University of St Andrews, gives an extensive biography of Eratosthenes detailing his accomplishments in mathematics and astronomy.