Students will explore and create a healthy ecosystem, once established they will then introduce additional variables which may harm the ecosystem and determine which hazards should be avoided.

Are all coral reefs the same? Each regional ecosystem has its own assemblage of species and each contributes uniquely to global biodiversity. Explore why ecosystem diversity is important for conservation decisions. Video by California Academy of Sciences.

Flow of energy and matter through ecosystems. What happens if an ecosystem is disrupted. Video by California Academy of Sciences. Created by California Academy of Sciences.

Flow of energy and matter through ecosystems. What happens if an ecosystem is disrupted. Video by California Academy of Sciences. Created by California Academy of Sciences.

Students make edible models of algal cells as a way to tangibly understand the parts of algae that are used to make biofuels. The molecular gastronomy techniques used in this activity blend chemistry, biology and food for a memorable student experience. The models use sodium alginate, which forms a gel matrix when in contact with calcium or moderate acid, to represent the complex-carbohydrate-composed cell walls of algae. Cell walls protect the algal cell contents and can be used to make biofuels, although they are more difficult to use than the starch and oils that accumulate in algal cells. The liquid juice interior of the algal models represents the starch and oils of algae, which are easily converted into biofuels.

Students are charged with thinking about what it takes to 'do science'. They are introduced to the science of dendrochronology and learn how tree-ring science is executed.

This activity is a field trip investigation where students gather stream flow, volume, depth & height (area) data on Ramsey County dams (Keller and Round lake), interpret their findings and make in-depth observations in order to assess the effectiveness of dams through the season and estimate the life-span of the dams in years.

This activity is an in class lab where students will compare different acid solutions on seed germination and growth.

This activity demonstrates the effect of changes in the environment on the growth of plants. The plants are placed in environments such as high salinity, cold, heat, or drought and observe the different reactions (growth) of the plants to these conditions. Students discuss the desirability of breeding new types of plants that are better able to withstand these changes if they occur in the general environment. The objectives of this activity is to: 1. Plant, grow and maintain plants under different environmental treatment conditions. 2. Observe differences in plant growth between these treatments. 3. Compare the growth of treated plants with the growth of control plants

The goal of this exercise is to have students gain an understanding of how fractures affect groundwater flow patterns. In order for them to complete the activity, they need some background on characteristic fracture patterns in different rock types. This background could be provided in a variety of ways depending on geographic location and outcrop availability. If outcrops of crystalline and sedimentary sequences are available, you could take students in the field and have them observe (and perhaps sketch) the differing fracture patterns. If geology (and or weather) preclude this option, the students could observe fracture patterns from slides of outcrops (see slides in accompanying PowerPoint Presentation).

The classroom portion of the exercise uses a simple 2D numerical model (TopoDrive, available from USGS) to simulate flow in three aquifers: 1) homogeneous isotropic, 2) fractured crystalline, and 3) fractured sedimentary sequences. The task is to observe how the fracture patterns alter the flow patterns as compared to the homogeneous, isotropic simulation. The activity gives students practice in integrating geologic data into numerical models, describing flow patterns, and using computer technology. The activity also integrates knowledge from structural geology with hydrogeology.

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This activity begins as a classroom investigation, but may extend to a field investigation where students will determine the effects of air temperature on seed germination. This is accomplished by developing investigative questions, recording, and analyzing data.

This video shows 15 years of data obtained via Polar-orbiting satellites that are able to detect subtle differences in ocean color, allowing scientists to see where there are higher concentrations of phytoplankton - a proxy for the concentration of chlorophyll in the ocean.

This worksheet helps students think about the cause and effect of pressure/temperature changes in subsurface and how these changes would affect the state of a solid rock. In this worksheet, students are given 6 different scenarios and associated pressure/temperature charts with a solidus line and a starting pressure/temperature point. Scenarios include heating and melting due to a nearby intrusion, diagenesis, decompression melting, cooling of magma at the surface, and adding water to the system. For each scenario, students draw an arrow from the starting point to show how the pressure and temperature would change. For example, students are told that a rock in the subsurface quickly rises towards the surface and melts, so fast that the temperature doesn't change much. A student would then draw a vertical arrow up to show that there is only a change in pressure. There scenarios are chosen to help students better understand the complexities of the subsurface in terms of pressure and temperature.

This worksheet uses the sketch-understanding program with built-in tutor: CogSketch . Therefore, students, instructors, and/or institution computer labs need to download the program from here: http://www.qrg.northwestern.edu/software/cogsketch/. At any point during the worksheet, students can click the FEEDBACK button and their sketch is compared to the solution image. The built-in tutor identifies any discrepancies and reports pre-written feedback to help the student correct their sketch until they are done with the activity. Once worksheets are emailed to the instructor, worksheets can be batch graded and easily evaluated. This program allows instructors to assign sketching activities that require very little time commitment. Instead, the built-in tutor provides feedback whenever the student requests, without the presence of the instructor. More information on using the program and the activity is in the Instructor's Notes.

We have developed approximately two dozen introductory geoscience worksheets using this program. Each worksheet has a background image and instructions for a sketching task. You can find additional worksheets by searching for "CogSketch" using the search box at the top of this page. We expect to have uploaded all of them by the end of the summer of 2016.

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Make an arts and crafts insect from an egg cartoon. Activity from Weekly STEM in a Bag. Colorado Americorp agents in Araphahoe, Denver, Garfield, Larimer, and Weld Counties. Work supported by the Corporation for National and Community Service under Americorps grant number 18AFHCO0010008. Opinions or points of view expressed in this lesson are those of the authors and do not necessarily represent the official position of or a position that is endorsed by the Corporation or the Americorps program. This resource is also available in Spanish in the linked file.

Students test the question, "Do eggs balance on the equinox?" Students develop their own procedure, analyze their data and come up with their own conclusions.

This activity investigates the oceanographic and climatic characteristics of El Ni��o/La Ni��a (ENSO) events using observational data from moored ocean buoys in the tropical Pacific Ocean. Data are obtained from NOAA's Tropical Atmosphere Ocean (TAO) project website which provides a web-based interface for accessing and displaying oceanographic data. In addition to providing an introduction to ENSO, this activity is designed to give students practice interpreting real oceanographic observations by emphasizing the description and identification of patterns in large data-sets. Students first describe patterns in sea-surface and cross-sectional transects of ocean temperatures and surface winds associated with "normal", El Ni��o, and La Ni��a years and then use this as a basis for classifying observations from unknown years and interpreting connections between oceanographic and atmospheric processes occurring in the tropical Pacific.

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In late September (of an election year), one class session is devoted to developing a list of issues key to the class and likely to be discussed by the candidates. The list is converted into 3-5 questions all students will research and answer. Each student is assigned a candidate (President, Governor, congress, state legislature). An effort is made to assign each student a candidate who will appear on his/her ballot and to assign third party candidates.

Student research candidates' positions using web resources, news papers, and campaign materials. Students are strongly encouraged to contact the campaign directly and question the candidate, if possible.

Students report back to the class with a 3-5 minute presentation and a poster that may be displayed in a college commons area. Reports are presented a week prior to the election.

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For this experiment, students use a DC motor as a generator and various shaped turbine designs to test which design produces the most electrical power. Using a fan to generate the "wind", students attach different blades made of folded paper or card stock to the motor to see how much power is generated.

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This lesson introduces students to the fundamental concepts of electricity. This is accomplished by addressing questions such as "How is electricity generated," and "How is it used in every-day life?" The lesson also includes illustrative examples of circuit diagrams to help explain how electricity flows.

As the core activity of petrology portion of a mineralogy/petrology course, students cooperatively conduct petrographic and electron microprobe analytical studies on suites of Central Blue Ridge metamorphic rocks collected during class field activities. We make use of a remotely operable electron microprobe instrument at the Florida Center for Analytical Electron Microscopy (FCAEM) to conduct all analyses in class.

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)