Curated OER
University of Georgia: Texas Area Estimate
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
Curated OER
University of Georgia: Texas Area Estimate
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
Curated OER
University of Georgia: Texas Area Estimate
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
Curated OER
University of Georgia: Texas Area Estimate
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
Curated OER
Maya, Olmec and Pre Columbian Ruins in Guatemala
Site opens with a map of Guatemala on which the most famous and interesting Maya Ruins are located. Following, each site is placed in a chronological period according to the dates that have been estimated.
Curated OER
Unesco: Democratic Republic of the Congo: Okapi Wildlife Reserve
The Okapi Wildlife Reserve occupies about one-fifth of the Ituri forest in the north-east of the Democratic Republic of the Congo. The Congo river basin, of which the reserve and forest are a part, is one of the largest drainage systems...
Curated OER
Unesco: Bolivia: Noel Kempff Mercado National Park
The National Park is one of the largest (1,523,000 ha) and most intact parks in the Amazon Basin. With an altitudinal range of 200 m to nearly 1,000 m, it is the site of a rich mosaic of habitat types from Cerrado savannah and forest to...
Curated OER
Wikipedia: National Historic Landmarks in Hawaii: Huilua Fishpond
Last surviving fishponds out of an estimated 97 such structures that once existed on coastal O?ahu; still operational well into the 20th century.
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Wikipedia: Natl Historic Landmarks in New Mexico: Petroglyph Natl Monument
Variety of cultural and natural resources including five volcanic cones, hundreds of archeological sites and an estimated 25,000 images carved by native peoples and early Spanish settlers.
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Bbc News: Focus on the Slave Trade
BBC News offers a short summary of the slave trade from Africa to the Americas. Gives statistics on the number of slaves (estimated at 10 to 28 million), where they went, and the cruel conditions of their enslavement.
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Educational Technology Clearinghouse: Clip Art Etc: George Whitefield
George Whitefield (December 16, 1714 - September 30, 1770), was a preacher in the Church of England and one of the leaders of the Methodist movement. He first took to preaching in the open air on Hanham Mount, Kingswood, in southeast...
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Science Kids: Science Images: Thescelosaurus Skeleton
This picture shows a 1915 reconstruction of a Thescelosaurus skeleton by Charles Gilmore. Thescelosaurus was a small dinosaur from the late Cretaceous Period (around 65 million years ago). Scientists estimate that it grew up to 4 metres...
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Science Kids: Science Images: Irritator
This drawing shows the possible appearance of Irritator, a dinosaur from the early Cretaceous Period (around 110 million years ago). Fossil remains of this Theropod dinosaur are limited but scientists estimate that it grew to around 8...
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Science Kids: Science Images: Paralititan
This drawing shows the possible appearance of Paralititan, a dinosaur from the late Cretaceous Period (around 100 million years ago). Paralititan was a huge Titanosaur and its name means 'tidal giant'. There is little fossil evidence of...
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Science Kids: Science Images: Saltasaurus
This drawing shows the possible appearance of Saltasaurus, a dinosaur from the late Cretaceous Period (around 70 million years ago). While Saltasaurus was a member of the huge Sauropod family, it was relatively small compared to others...
Curated OER
Science Kids: Science Images: Sauroposeidon Size Scale
This picture shows a scale size comparison between a human and a dinosaur called Sauroposeidon. Sauroposeidon was a huge Sauropod from the early Cretaceous Period (around 112 million years ago). Scientists estimate that it reached a...
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