Curated OER
Etc: Comparative Projections of Asia, 1800 1899
A map using comparative map projections of Asia, as part of a hemisphere and on a Mercator's projection, to illustrate European misconceptions of land claims during territorial colonialism. In the 19th century, European powers were...
Curated OER
Cornell University: Aristarchus
This site from Cornell University provides a discussion of how Aristarchus arrived at his conclusions of the distance from the earth to the sun and moon. Also has his methods for determining the size of the moon and the sun.
Curated OER
Cornell University: Aristarchus
This site from Cornell University provides a discussion of how Aristarchus arrived at his conclusions of the distance from the earth to the sun and moon. Also has his methods for determining the size of the moon and the sun.
Curated OER
Science Kids: Science Images: Abrictosaurus
This drawing shows the possible appearance of Abrictosaurus, a dinosaur from the early Jurassic Period (around 200 million years ago) that weighed around 45 kg (100 lb) and reached around 1.2 m (4 ft) in length. The fossil remains of...