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Creating Understanding: How Metamorphic Rock is Formed
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This activity gives a visual representation of how we are able to see the different layers of metamorphic rocks.

Author:
Seidensticker, Sherrie
Adapted by Sherrie Seidensticker, Jeffers Pond Elementary, Prior Lake Minnesota, adapted from the book titled 204 Sticky, Gloopy, Wacky, and Wonderful Experiments by Janice VanCleave's.
Creation of Dichotomous Keys From a BioBlitz
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This activity is a field investigation of the biodiversity in a given area. The exercise will give students experience making scientific observations and creating a dichotomous key.

Author:
Carl Pedersen
Creepy Critters
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This activity is a field investigation where student gather data on organisms they find in or around a pond.

Author:
Rich Teske
Crumbling Rocks - Observing and Describing Rocks
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This activity is a classroom hands-on , active learning lesson where students observe and describe a familiar item, to help them observe and describe the physical characteristics of rocks.

Author:
Gbai Metzger
Metzger, Gbai
Darwin's Finches and Natural Selection
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In this "clicker case," students learn about natural selection through the research of Peter and Rosemary Grant and colleagues on the finches of the Galapagos Islands. Students are presented with data in the form of graphs and asked to determine what is happening to a population of finches as the changing environment produces changes in the shape of the finches' beaks. This case is suitable for any size course in introductory biology, ecology, or evolution, and does not require any pre-requisite knowledge of evolution or natural selection. The case consists of a PowerPoint presentation (~4.5MB) punctuated by questions that students answer in class using "clickers." It can be adapted for use without these technologies.

Author:
Eric Ribbens
Cheryl A. Heinz
The Dead Zone: Ecology and Oceanography in the Gulf of Mexico
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This interrupted case study focuses on the seasonal hypoxic area in the Gulf of Mexico known as the Dead Zone. It follows Sue, a college student, whose father is a commercial fisherman affected by the lack of fish in his usual fishing grounds in the summer. In her quest to determine why the fish disappear, Sue learns about both the biological and physical forces that produce, maintain, and eventually dissipate the hypoxic zone. The case introduces students to the marine food web, the aquatic microbial loop, the impact of exogenous nutrients, and the physical forces that affect oxygen content and water stratification. It could be used in introductory biology or ecology courses or in an oceanography course.

Author:
Lauren Sahl
Kathleen Archer
The Deforestation of the Amazon: A Case Study in Understanding Ecosystems and Their Value
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In this case study, students examine tropical deforestation in the Amazon from the perspective of three dominant stakeholders in the region: a peasant farmer, logger, and environmentalist. As part of the exercise, students perform a cost-benefit analysis of clearing a plot of tropical forest in the Amazon from the perspective of one of these stakeholder groups. Developed for a course in global change biology, this case could also be used in courses in general ecology, environmental science, environmental ethics, environmental policy, and environmental/ecological economics.

Author:
Philip Camill
Dengue in the Landscape: A Threat to Public Health
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This interrupted case engages students in issues contributing to the increase of dengue fever in Jamaica. The overall goal of the case is to make clear the connections between land use management and public health, specifically dengue fever. Students learn about the effects of land use management on the breeding of the Aedes aegypti mosquito and its implications for public health as well as about the spread, extent, and form of the disease. In addition, students are challenged to think of solutions to public health problems given limited resources (in terms of personnel and money). The case was created for an introductory course in fisheries, wildlife and conservation biology. It may also be appropriate for introductory biology and ecology courses. A PowerPoint presentation to supplement the case is also available.

Author:
Hannah L. Rusch
Jim Perry
Density Column Lab - Part 1
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In this first part of a two-part lab activity, students use triple balance beams and graduated cylinders to take measurements and calculate the densities of several common, irregularly shaped objects with the purpose to resolve confusion about mass and density. After this activity, conduct the associated Density Column Lab - Part 2 activity before presenting the associated Density & Miscibility lesson for discussion about concepts that explain what students have observed.

Author:
TeachEngineering.org
GK-12 Program,
Jessica Ray, Phyllis Balcerzak, Barry Williams
Density Column Lab - Part 2
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Concluding a two-part lab activity, students use triple balance beams and graduated cylinders to take measurements and calculate densities of several household liquids and compare them to the densities of irregularly shaped objects (as determined in Part 1). Then they create density columns with the three liquids and four solid items to test their calculations and predictions of the different densities. Once their density columns are complete, students determine the effect of adding detergent to the columns. After this activity, present the associated Density & Miscibility lesson for a discussion about why the column layers do not mix.

Author:
TeachEngineering.org
GK-12 Program,
Jessica Ray, Phyllis Balcerzak, Barry Williams
Density Differences
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In this lab activity, students determine density differences of water samples with varying temperature and salinity levels. Students synthesize information to predict the effects of oil in given water samples.

Author:
Mary Holmberg
Designing a Sustainable Guest Village in the Saguaro National Park
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Students are challenged to design a permanent guest village within the Saguaro National Park in Arizona. The design must provide a true desert experience to visitors while emphasizing sustainable design, protection of the natural environment, and energy and resource conservation. To successfully address and respond to this challenge, students must acquire an understanding of desert ecology, environmental limiting factors, species adaptations and resource utilization. Following theintroduction, students generate ideas and consider the knowledge required to complete the challenge. The lectures and activities that follow serve to develop this level of comprehension. To introduce the concepts of healthy ecosystems, biomimetics and the importance of sustainable environmental design, students watch three video clips of experts. These clips provide direction for student research and challenge design solutions.

Author:
Wendy J. Holmgren
Amber Spolarich
TeachEngineering.org
VU Bioengineering RET Program,
Megan Johnston
Determining Bird Populations Through Counting
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This activity is a field investigation where students gather population data on bird species. The students will create bar graphs and interpret their findings. Based on their experiences and data, they will write an answer to the guiding question.

Author:
Michelle Dahlby
Determining Bulk Density of Different Soil Samples and Data Analysis
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This activity combines field exercise soil collection with lab analysis of soil bulk density. Students develop a lab procedure to measure density and analyze data using Microsoft Excel computer software.

Author:
Leslie Kreller
Leslie Kreller, Warroad High School, Warroad, MN, based on an activity from the MnSTEP Summer Chemistry Institute (2007).
Disassemble a Click Pen
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Students disassemble and analyze retractable pens. Through the process of "reverse engineering," they learn how the ink pens work.

Author:
TeachEngineering.org
Center for Engineering Educational Outreach,
Discovering Nature in our Neighborhood:  An Investigation of Natural Communities around Our School
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In this unit, students make regular journal entries about a plant/animal/insect community in the natural area around our school and use this to create a Non-fiction Class Book. They also interview family/resources to discover, record and present stories about human relationships with nature from their culture(s).

Author:
Natasha Rubenstein
Discovering the Effect Mining has on Land
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This is an investigation where students observe what happens to land after it is mined. Students will create a hypothesis, observe their model, conclude what happens to land after it is mined, and discover the role humans play in land conservation.

Author:
Debra Olson
Debra Olson