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  • Geoscience
Improving on Nature?
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In 1958, black bass were introduced into Lake Atitlan in the highlands of western Guatemala as a way to attract tourism and boost the local economy, but unforeseen complications resulted in an ecological disaster. Developed for an introductory course in biology, this case study first casts students in the role of the local population at that time and asks them to judge the proposal to introduce the new species of fish. The students then review the ensuing events from a historical perspective based on additional information they receive from the instructor in a progressive disclosure format.

Author:
Dennis Kingery
The Incredible Journey: A Walk Through the Water Cycle
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This activity is a classroom investigation where students predict, explore and evaluate what happens to water as it travels through the water cycle.

Author:
Kristin Contons
Into the Abyss: The Case of the Collapsing Sinkhole
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Designed for use with small groups in an introductory geology class, this case allows students to determine the relationship between sinkhole development in a karst terrain and groundwater levels. Students then apply this knowledge to a lawsuit filed by the family of a driver of a minivan who dies after his car plunges into a sinkhole allegedly caused by a mining company.

Author:
David L. Ozsvath
Introduction to Nature Journaling
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This activity is a field investigation where students will learn the importance of detail when nature journaling.

Author:
Jaime Clark
Clark, Jaime
Investigating Earth Changes-Looking at Weathering and Erosion
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In this classroom activity students will learn about changes that occur in the earth's surface by investigating the process of weathering and erosion. Through interactive lectures and experiments students will understand how weathering and erosion take place and change the earth.

Author:
Stafford Gutknecht
Stafford Gutknecht, Loring Elementary School, Minneapolis, MN
stafford gutknecht
Investigating Earth Materials:  Collecting and Classifying
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This activity is a field collection investigation where students gather earth materials and make observations about their collection that leads them to discuss the nature of Earth surface and how it is changing.

Author:
Mike Kempenich
mike Kempenich
Investigating  Minnesota Rocks:  The Properties of North Shore Rocks
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This activity is a guided inquiry where students develop questions around a group of rocks, use their observation skills to describe the attributes, record and analyze their findings, and use their data, in conjunction with available resources, to categorize the rocks .

Author:
Jean Karschnia
Investigating Rocks
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In this classroom guided inquiry lesson, students will explore the properties of rocks. Students will make observations of granite and develop a hypothesis explaining what makes a rock.

Author:
Leah Bulver
Investigating Soil Composition - Soil Soaks Up Water
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This activity is a classroom quick lab where students explore sand, soil, and water in relation to absorption and permeability.

Author:
Carrie Leisch
Carrie Leisch, Centerville Elementary School, ISD 12, Centerville, MN 55038 Based on an original activity from Macmillan/McGraw-Hill, Lesson 2 Soil, p. 315 and 319.)
Investigating Soil: Which Soil Helps Plants Grow?
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This activity is a guided inquiry investigation where students gather data on which soil is the best for growing plants. Student will interpret their data, and develop a conclusion from the data. The student will determine which type of soil they would like to use in the next activity of making their own terrariums. The data collected could lead to further questions, which can be investigated in some extension activities.

Author:
kyle johnson
Kyle Johnson
Is Guaiacum Sanctum Effective Against Arthritis?  An Ethnobotany Case
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Dr. Beth Tonoany, a tropical population ecologist, is studying an unusual tree, Guaiacum sanctum, in the tropical forests of Central America. Interestingly, several local Ticos have told her that they use the tree for medicinal purposes. Students read the case and then answer questions designed to explore the process of screening and testing the medicinal value of plants identified as having potential health benefits. This case can be used in an introductory biology course, an introductory botany course, or any course which encounters ethnobotany as a component, such as a tropical biology course or a plant ecology course.

Author:
Barbra Burdett
Eric Ribbens
Angela Green
Is Iron Fertilization Good for the Sea?
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This case study describes experiments to seed the ocean with iron to encourage algae growth. It explores how human activities contribute to greenhouse effects and global warming, proposals to potentially counteract these effects and make the ocean more productive for commercial fishing, and the issues and possible unintended consequences of such activities. The case is appropriate for introductory biology, ecology, environmental biology, microbiology, and environmental microbiology classes as well as courses dealing with environmental policy.

Author:
LeLeng To Issacs
Is It Safe to Drink?
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In this activity, students conduct an investigation to purify water. They engineer a method for cleaning water, discover the most effective way to filter water, and practice conducting a scientific experiment. Through this activity and its associated lesson, student teams follow the steps of the engineering design process related to water treatment, as done by practicing engineers, including constructing and testing their designs.

Author:
TeachEngineering.org
Adventure Engineering,
I've Got Issues!
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This lesson will introduce students to environmental issues. Students will recognize environmental opinions and perspective, which will help them define themselves and others as either preservationists or conservationists. Students also learn about the importance of teamwork in engineering.

Author:
Janet Yowell
Malinda Schaefer Zarske
Integrated Teaching and Learning Program,
Amy Kolenbrander
Jessica Todd
TeachEngineering.org
Kermit to Kermette?  Does the Herbicide Atrazine Feminize Male Frogs?
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This case study explores the unintended side effects of chemicals introduced into the environment, specifically organic compounds that can act as environmental estrogens (chemical castration agents that can interfere with the sexual development of embryonic males). The case was developed for a non-majors chemistry course and focuses on the science that underlies the controversy surrounding the sale of the herbicide atrazine in the U.S. as well as the political and economic issues that impact this science.

Author:
Frank J. Dinan
A Killer Lake
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In 1986, Lake Nyos, a volcanic lake located in Cameroon, Africa, released a huge amount of carbon dioxide gas, killing over 1,700 people and countless livestock and other animals in the area. This case, intended for use in a limnology or an aquatic biology course, explores that event, introducing students to concepts related to lake formation, thermal stratification, and dissolved gases. Students interpret graphs containing temperature, dissolved oxygen, pH, and conductivity data for the lake, and then synthesize these different types of limnological data to understand what happened.

Author:
Thomas Horvath
Killing Coyote: A Film Analysis and Role-Play Case
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In this interrupted case study, students view a documentary film about a coyote hunting contest and then assume the role of various stakeholders in coyote management in the western United States to explore issues associated with wildlife management. As part of this, students complete a number of associated activities in which they are asked to reflect upon their ethical perspective regarding wildlife management. The case would be appropriate for use in a wildlife management, ecology, mid-level biology, or environmental ethics course.

Author:
Keely Roen