To complete this assignement student have to work in groups to answer …
To complete this assignement student have to work in groups to answer a series of questions on the evolution of land plants. They need to combine material previously covered in lecture and information from the WWW to determine how the evolution of land plants changed the lithosphere, atmophere, and biosphere.
After completing the attached exercise the students participate in a guided discussion. There are several way to divide students up into groups.
Different groups are asked to summarize: the link between the spread of land plants and
1) atmospheric carbon levels and climatic conditions,
2) organic carbon and dissolved oxygen levels in the ocean
3) the abundance of corals and other marine animals: shallow vs. deep ocean
4) Erosion rates on land and rates of organic matter burial in the oceans.
5) General patterns in diversity and biomass of marine and terrestrial fauna
Then each group is asked to discuss how the aspect they considered about the Devonian Extinction fits into and differs from conditions we see in the modern carbon cycle.
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Landslide between Highway 7 and the Susquehanna River (42.4947�� N, 74.98212�� W). …
Landslide between Highway 7 and the Susquehanna River (42.4947�� N, 74.98212�� W). Although, this exercise may be adapted elsewhere. An active, large active hillslope is required, preferably one close to infrastructure, and one which students can access safely. The following features are not uncommon, and make the problem richer: a river bend at the toe of the hillslope; a gas or water line routed through the slide; a hillslope exhibiting numerous scales of movements, from small debris flows a few cm wide to large rotational slides; and nearby infrastructure, such as buildings or roads.
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The overarching goal of this exercise is for students to explore the …
The overarching goal of this exercise is for students to explore the early anthropogenic hypothesis, which claims that early agriculture had a substantial impact on greenhouse gases and global climate thousands of years ago (Ruddiman, 2003). Students compare changes in greenhouse gas concentrations that occurred thousands of years ago to more recent changes that occurred over hundreds of years. Students also relate changes in greenhouse gas concentrations to warming. The exercise is completed over a 1.5- to 2-week period as the class covers a chapter on climate change.
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Did you have an earthquake where you live and want to participate …
Did you have an earthquake where you live and want to participate in Community Science? Would you like students to better understand how earthquake intensity is determined? This guide provides ideas about how you can incorporate the online USGS tool: Did You Feel It? into your classroom.
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As you watch a butterfly navigate the flowers in your back yard, …
As you watch a butterfly navigate the flowers in your back yard, or a pesky fly avoid your flyswatter, keep in mind their vision is quite different than yours and mine.
Some of the Viking images sent back from Mars in the 1970s …
Some of the Viking images sent back from Mars in the 1970s show tantalizing evidence of dendritic valley networks in some of the oldest terrains on the planet. One of the big questions ever since has been whether it might have rained early in Mars history.
One of the ways of deciding whether the Mars valley networks might have been produced by rainfall is to find out how similar they are to valley networks on Earth, which we know are produced by rainfall. The standard method for analyzing drainage basins is comparison of the number of drainage segments per square kilometer (drainage density) and how extensively branched the network is (stream order).
In this exercise, students calculate stream order for valley segments mapped by Hynek and Phillips (2003) using MOC/MOLA data. Students then use data on valley segment length and drainage basin area from Hynek and Phillips (2003) to calculate drainage density. They compare stream order and drainage density for the Mars site with similar calculations for areas on Earth and evaluate the question of whether valley networks on Mars might be consistent with rainfall on an early Mars, and what the uncertainties and limitations are in their conclusions.
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This is a several week activity in which students evaluate the differential …
This is a several week activity in which students evaluate the differential taphonomy of shells tumbled in carbonate sand as compared to silica sand.
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In this interactive demonstration students will make observations of diffusion of a …
In this interactive demonstration students will make observations of diffusion of a semi permeable membrane and be able to compare these observations to the functions of a cell membrane.
In a multi-week experiment, student teams gather biogas data from the mini-anaerobic …
In a multi-week experiment, student teams gather biogas data from the mini-anaerobic digesters that they build to break down different types of food waste with microbes. Using plastic soda bottles for the mini-anaerobic digesters and gas measurement devices, they compare methane gas production from decomposing hot dogs, diced vs. whole. They monitor and measure the gas production, then graph and analyze the collected data. Students learn how anaerobic digestion can be used to biorecycle waste (food, poop or yard waste) into valuable resources (nutrients, biogas, energy).
"Digging for Fossils": A student laboratory activity (Note: this resource was added …
"Digging for Fossils": A student laboratory activity
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An understanding of the microscale structure and composition of sedimentary rocks is …
An understanding of the microscale structure and composition of sedimentary rocks is of undiminished importance in diverse fields (e.g., microscale chemical analysis cannot proceed without petrography), yet the curriculum is no longer offering undergraduates the opportunity to develop sufficient expertise. In an effort to bolster the exposure of undergraduates to sedimentary petrology, the Tutorial Petrographic Image Atlas was created. The basic components of the tutorial are petrographic images that are viewed in a static mode (no rotation, no animation, no timed observation). Text boxes relating to identification of components within the image are attached to specific mapped regions of the image. Both the mapped regions and the text are invisible until the student points and clicks on an active region of the image. In essence, the student must 'ask', "What is that?" Information ranges from simple one word identifications to lengthy paragraphs explaining the finer points of why something is what it is.
This is a highly interactive digital product that attempts to recreate certain elements of the laboratory petrographic experience including: a sense of exploration; high-quality petrographic images; a visual field dominated by the image; multiple examples of features viewed in diverse contexts; rich content relating to the identification and significance of features; active, inquiry-based learning.
Unlike real-time laboratory experiences with the petrographic microscope, the digital tutorial can be used at any time and place that a computer is available, does not require the presence of a microscope or samples or an expert, can be viewed repeatedly, has the technical content integrated with the image, gives the student undivided "attention" (unlike the TA, it doesn't wander to the other side of the lab), and rarely gives answers unless "asked."
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The purpose of this week's lab is to - prepare calibration standards …
The purpose of this week's lab is to - prepare calibration standards - use a UV-Vis spectrometer to determine the spectral peaks for several dye solutions, and create a calibration curve - calculate how much of each single-element standard solution is needed to make a multi-element stock solution
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This is an online learning experience that transports learners around the world …
This is an online learning experience that transports learners around the world to different locations related to the Cretaceous -- Paleogene (K -- Pg) extinction event. Students will collect and analyze evidence to explain how natural events impact life on Earth. The KPg extinction event, which occurred 66 mya, caused the mass extinction of nearly 75% of the plant and animal species on Earth, including the dinosaurs. It is marked by a thin layer of sediment which can be found throughout the world in marine and terrestrial rocks.
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Students are divided into small groups. Each group chooses a channel cross …
Students are divided into small groups. Each group chooses a channel cross section and makes a discharge measurement both using a current meter and a surface float. Students share the data collected in the lab but each student calculates discharge on their own and answers related questions. Designed for a geomorphology course
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In this quantitative field activity, students collect field data on channel geometry, …
In this quantitative field activity, students collect field data on channel geometry, flow velocity, and bed materials. Using these data, they apply flow resistance equations and sediment transport relations to estimate the bankfull discharge and to determine if the flow is sufficient to mobilize the bed.
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This is a student-centered activity for a synchronous online course where students …
This is a student-centered activity for a synchronous online course where students access google slides to complete during a video conferencing session (eg. Zoom) in break out rooms. Students will be introduced to plate tectonics through a series of scaffolded mini activities which includes: active learning jigsaws, group research and presentations, and assessments. Students will familiarize themselves with types of plate boundaries as well as features found at plate boundaries using the Jules Verne Voyager Jr. website, and will use GPS data to visualize direction and speed of plate motion. Additional activities suggested include using Google Earth to visualize plate boundaries, drawing a transect across a plate boundary, and calculating the rate of plate motion using the Hawaiian Islands.
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In this video module, students learn how scientists use genetic information from …
In this video module, students learn how scientists use genetic information from dogs to find out which gene (out of all 20,000 dog genes) is associated with any specific trait or disease of interest. This method involves comparing hundreds of dogs with the trait to hundreds of dogs not displaying the trait, and examining which position on the dog DNA is correlated with the trait (i.e. has one DNA sequence in dogs with the trait but another DNA sequence in dogs not displaying the trait). Students will also learn something about the history of dog breeds and how this history helps us find genes.
Scientists who are working to discover new medicines often use robots to …
Scientists who are working to discover new medicines often use robots to prepare samples of cells, allowing them to test chemicals to identify those that might be used to treat diseases. Students will meet a scientist who works to identify new medicines. She created free software that ''looks'' at images of cells and determines which images show cells that have responded to the potential medicines. Students will learn about how this technology is currently enabling research to identify new antibiotics to treat tuberculosis. Students will complete hands-on activities that demonstrate how new medicines can be discovered using robots and computer software, starring the student as ''the computer.'' In the process, the students learn about experimental design, including positive and negative controls.
Students learn about memory by doing a memory-writing exercise, studying the brain …
Students learn about memory by doing a memory-writing exercise, studying the brain to understand how it affects memory, reading Li-Young Lee's poem "Mnemonic," and creating projects to demonstrate their understanding.
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