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This site describes snow crystals and snowflakes. Although a common meteorological phenomenon, snow crystal growth is a fascinating and poorly understood process, in which remarkably complex and beautifully symmetric structures appear, quite literally, out of thin air. The many facets of snow crystals are described here, along with the attempts to understand their formation. Site highlights include ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12), College (13-14), College (15-16), Graduate / Professional, General public
Resource type: Field activity, Illustration - scientific, Photograph, Video, Ref. material
Subject: Atmospheric science, Cryology, Physics
 
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Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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This resource is included in the following collections:
DLESE Community Collection (DCC)    Browse collection
DLESE Reviewed Collection (DRC) DLESE Reviewed Collection    Browse collection
Community Annotated Collection     Browse collection
Digital Water Ed Library (DWEL)     Browse collection
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This activity is designed to replicate Eratosthenes' experiment in which he measured the circumference of the Earth. Students at two different schools will work in small groups to take accurate measurements at a specific time and use their knowledge of geometry and trigonometry to determine the measure of an angle. They will also use significant digits in their reports, calculate percent error, and ... Full description.
Grade level: High (9-12)
Resource type: Field activity
Subject: Geology, Mathematics
 
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In this activity students build a device to capture an outline of the Sun and use geometry to determine its diameter. They will then calculate the percent difference between their value and the accepted diameter of the sun. Full description.
Grade level: High (9-12)
Resource type: Field activity
Subject: Mathematics, Space science
 
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This activity will allow students to investigate the resistance to weathering of headstones in a cemetery. This field study offers scope for developing many of the investigative skills involved in planning, obtaining and presenting evidence, considering evidence and in evaluating it. Students will have to consider key factors that need to be taken into account when collecting evidence, and how evidence ... Full description.
Grade level: Middle (6-8), High (9-12)
Resource type: Field activity
Subject: Geology
 
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National Science Education Standards (NSES): Read
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This investigation into the weathering of different types of rock can be run as an open-ended student investigation. It begins with a visit to a nearby churchyard or cemetery. This will usually contain a variety of rock types as headstones along with the dates at which they were first exposed to weathering. Students can work out how long the headstone has been in place from the date of death of the ... Full description.
Grade level: Middle (6-8)
Resource type: Field activity
Subject: Geology
 
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National Science Education Standards (NSES): Read
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This activity demonstrates that coastal wetlands are an important factor to insure the success of bird migration. Students will discover that ponds, lakes and marshes provide food and shelter for traveling birds and, without the wetlands, birds would not have the energy to make the trek from areas as far south as Panama. They also learn that besides providing habitats for waterfowl, wetlands help ... Full description.
Grade level: Intermediate (3-5), Middle (6-8)
Resource type: Field activity
Subject: Biology, Ecology
 
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National Science Education Standards (NSES): Read
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This site contains model class exercises which instructors may find useful as class assignments to accompany class trips to the Wallace Creek site. These exercises are designed for college-level students who have had some background in geology and a general background of fault mechanics and earthquake geology. Particular questions in these exercises requires the students to conduct certain exercises ... Full description.
Grade level: College (13-14)
Resource type: Field activity
Subject: Physical geography, Geology, Geophysics
 
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This activity is designed to define the biotic and abiotic characteristics found in a rocky intertidal ecosystem, to observe interactions between select living organisms and between themselves and their environment, and analyze which environmental and competitive factors may influence the particular pattern of density, diversity, or zonation found at a study site. The transect method and statistical ... Full description.
Grade level: High (9-12), College (13-14)
Resource type: Field activity
Subject: Ecology, Biological oceanography
 
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These activities were designed to enhance the sixth chapter of a module about wetlands. The activities can be used as part of the module or can stand alone as lab activities. In the first activity students set up a plant transect, identify as many different types of vegetation as possible in the wetland, and compare upland and wetland species by observing differences in their structure. The objective ... Full description.
Grade level: Middle (6-8)
Resource type: Field activity
Subject: Ecology, Hydrology, Soil science
 
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In this activity students walk around outdoors and observe the wetlands they find. Observations will include types of plants and animals, types of soil, smells, and sounds that may be different from those they have experienced in places they might not consider to be a wetland. In a wooded area students look for signs that water has been there although it may be dry when they are there. They look for ... Full description.
Grade level: Primary (K-2), Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Field activity
Subject: Ecology, Hydrology
 
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National Science Education Standards (NSES): Read
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