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This lesson presents an introduction to solar observations by eye or telescope and during eclipse. It also explores the distance to the Sun, its layers, the corona and the solar wind. Safety rules for observing the Sun are stressed as students are informed about the visible layers of the Sun - photosphere, chromosphere, corona. Students learn about the high temperature of the corona, the evidence ... Full description.
Grade level: High (9-12)
Resource type: Lesson plan
Subject: Space science
 
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This description of the fossil record of bacteria focuses on one particular group of bacteria, the cyanobacteria or blue-green algae, which have left a fossil record that extends far back into the Precambrian. The oldest cyanobacteria-like fossils known are nearly 3.5 billion years old and are among the oldest fossils currently known. Cyanobacteria are larger than most bacteria and may secrete a thick ... Full description.
Grade level: High (9-12), College (13-14), Informal
Resource type: Ref. material
Subject: Biology, Geologic time, Paleontology
 
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Information on this page pertains to dinoflagellates, the fossil record of which may extend into the Precambrian. Spherical organic-walled microfossils known as acritarchs, some of which may be dinoflagellate hystrichospheres, first appear in rocks about 1.8 billion years old. Exactly what the acritarchs were is not known with certainty; they probably included a number of clades of eukaryotic algae, ... Full description.
Grade level: High (9-12), College (13-14), Informal
Resource type: Ref. material
Subject: Biology, Geologic time, Paleontology
 
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This site describes some unusual fossils of the late Precambrian age, found on exposed rock surfaces along the southern coast of the Avalon Peninsula in Newfoundland. The most famous locality where these fossils can be seen is at Mistaken Point at the southernmost tip of the Avalon Peninsula. The Mistaken Point fossils were preserved by being blanketed with layers of fine volcanic ash and are dated ... Full description.
Grade level: High (9-12), College (13-14), Informal
Resource type: Photograph, Ref. material
Subject: Biology, Geologic time, Paleontology
 
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This site describes the White Mountains, the Inyo Mountains, and associated ranges along the California-Nevada border north of Death Valley. This location presents one of the most important and best-known Late Proterozoic to Cambrian sections in the United States. Starting with the unfossiliferous Precambrian rocks of the Wyman Formation, paleontologists can work their way through a complete section ... Full description.
Grade level: High (9-12), College (13-14), Informal
Resource type: Ref. material
Subject: Geologic time, Paleontology
 
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The Tommotian Age began about 530 million years ago and is a subdivision of the early Cambrian. Named for rock exposures in Siberia, the Tommotian saw the first major radiation of the animals, or metazoans, including the first appearance of a great many mineralized taxa such as brachiopods, trilobites, archaeocyathids, molluscs, and echinoderms. A few million years before the Tommotian, in the Vendian, ... Full description.
Grade level: High (9-12), College (13-14), Informal
Resource type: Ref. material
Subject: Geologic time, Paleontology
 
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This site describes the Chengjiang fauna, one of the most exciting, oldest, and best preserved Paleozoic biota. With a wealth of different taxa that was never expected for the Early Cambrian, it is said to be the most spectacular paleontologic discovery since the Burgess Shale of British Columbia and one of the most important fossil archives known so far. After information on stratigraphy and preservation, ... Full description.
Grade level: High (9-12), College (13-14), College (15-16)
Resource type: Ref. material
Subject: Biology, Geologic time, Paleontology
 
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This description of the inland waters in the polar regions of Canada includes lakes, rivers, and wetlands. In addition, the site provides information on the ecozones of the Hudson Bay, Yukon-Mackenzie, and the Arctic Archipelago. For all areas the subject of ice is addressed to include the effects of inland ice, types of ice, and ice as a climate predictor as well as snow cover and freeze and thaw ... Full description.
Grade level: High (9-12), College (13-14)
Resource type: Photograph, Ref. material
Subject: Cryology, Environmental science, Hydrology
 
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This volcano resource introduces the six-type classification system and points out weaknesses of the classic three-type system. The six types of volcanoes are shield volcanoes, strato volcanoes, rhyolite caldera complexes, monogenetic fields, flood basalts, and mid-ocean ridges. For each type of volcano there is a description of both structure and dynamics along with examples of each. You can account ... Full description.
Grade level: High (9-12)
Resource type: Ref. material
Subject: Physical geography, Geology
 
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In this lesson students will examine how evolution has been scientifically explained historically. In doing so, students will examine the arguments and theories set forth by three historically important scientists: Jean Baptiste Lamarck, Alfred Russel Wallace, and Charles Darwin. The purpose of this lesson, however, is not to begin to make comparisons, but simply to help students understand how arguments ... Full description.
Grade level: High (9-12)
Resource type: Lesson plan
Subject: Biology, History and philosophy of science
 
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