Curated OER
Go With the Flow
Students experiment with a simulated river bed and examine how erosion takes place faster with a young, fast-moving river than with a slow, older river.
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Pattern And Design in Nature
Students observe natural objects carefully and note intricate design and structure beyond surface form.
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Dinosaur I Finding And Dating
Students investigate how long dinosaurs lived on Earth and how that compare to how long man has been on Earth. They discover how scientists excavate fossils.
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Solubility and Chemical Changes in Groundwater
Students test pH of water before and after it travels through different substrates (igneous pebbles and limestone) to detemine how soluble materials can affect groundwater. They answer questions such as: What happended to the pH of the...
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Fossils
Fourth graders act as paleontologists and attempt to figure out the environment where various fossils would have existed. They explain how fossils can be used to make inferences about past life, climate, geology, and environments.
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Ride the Wild Leaf Cycle
Fourth graders explore plant life by completing an Internet activity. In this botany instructional activity, 4th graders identify the types of plants that grow locally and the different soils they utilize to survive. Students read...
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Materials Engineering: Designing Walls
Students discover how the matierals in the earth can be used to make walls and buildings. They examine the Great Wall of China and its engineering. They complete the unit by creating their own wall from a design they drew.
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Detecting Magnetic Materials in "Martian" Soil
Students simulate some of the Pathfinder experiments by devising methods of collecting and measuring magnetic substances in pseudo-Martian soil. The efficiency of each of the methods used to collect materials is evaluated in this lesson.
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Structure of the Earth System
Eighth graders describe the steps in the water cycle. They discuss factors that affect runoff and explain the differences between stalactites and stalagmites. They discover the importance of ground water.
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How Soft or Hard is Your Water?
Students test samples of water to determine how a chemical water softener affects water's ability to form suds. After collecting their data and analyzing their results, students answer follow-up questions about their lab.
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Journey Through Time
Students examine the movement of the Bison over the land bridge. In groups, they use the events to put them into the correct sequence. They apply measurement to chronological time and read more information about the land bridge.
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Bison Calculations
Students discuss how animals are cared for when they are captured. Using calculations, they determine how much food and water it takes for one bison and compare their water intake to humans. They also compare their weight to that of a...
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What is a Ruminant?
Students examine the way bison eat and digest their food. Using a diagram, they follow the food from one compartment to the next. They discover that bison are ruminants and discuss why the bison need four stomachs.
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Analyzing a Picture
Students examine various photographs and identify three conclusions from them. Using the pictures, they write their own story based on their observations. They share their stories with the class and discuss how some of their...
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Life's Big Questions: Where Did Life Come From?
Students explore the life forms that live in the hot springs of Yellowstone. They examine how microscopic creatures can survive in these extreme conditions. Students perform experiments to observe growth samples and demonstrate how a...
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What's Under There?
Students determine ways to make "observations" about unknowns, such as the land beneath an ice sheet or the interior of the Earth, using tools other than sight. They build "mystery boxes" and exchange them with other groups to "map"...
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Soil Analysis
Young scholars examine zip lock bags of clay, silt, and sand to determine its origin. They rotate through stations to compare different soils and perform oil separation and Tullgren funnel tests.
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