Follow this lesson to review basic exponent manipulation. Worksheets, further lessons, and lists of resources are also available. This resource is part of the Teaching Quantitative Skills in the Geosciences collection. http://serc.carleton.edu/quantskills/

In the learning module Allies and Aliens students assume the role of agents from planet Earth who must assess varying degrees of prejudice and misinformation as they visit Web sites from other planets. Because most kids don't think to look for bias or false information online and subtle forms of racism may be difficult to recognize, Allies and Aliens uses the pretense of an evaluation mission to keep players from guessing its true purpose right away. The mission is divided into two parts. On Day One, students encounter information with little direction. On Day Two, the module's purpose becomes apparent. Allies and Aliens aims to teach students the basics about bias, stereotyping, misinformation and propaganda techniques, on the Internet and in other media. It also helps students to understand the difference between fact and opinion, and the importance of authenticating online information. The challenges of this module will ultimately sharpen students' research skills as well as their critical thinking skills. The experience will teach them to recognize viewpoint, bias, and manipulation -- online and off.

This Flash animation illustrates continental growth. It shows a convergent boundary where a terrane on a subducting plate is fused to the edge of a continent. Users can stop, play, fast forward and rewind the animation at any time. This visualization is one of several animations in a series developed as a component of Exploring Earth, a website that supports the textbook Earth Science.

This Flash animation illustrates aeolian processes that form terrestrial arches. Erosion exploits tectonic fractures and results in thin sandstone walls that can be penetrated by near ground windblown sand grains. Over time, weathering and gravity causes arches to fall. Users can stop, play, fast forward and rewind the animation at any time. This visualization is one of several animations in a series developed as a component of Exploring Earth, a website that supports the textbook Earth Science.

This Flash animation illustrates wave motion, or the movement of energy through water. Users can stop, play, fast forward and rewind the animation at any time. This visualization is one of several animations in a series developed as a component of Exploring Earth, a website that supports the textbook Earth Science.

This 11-slide PowerPoint presentation presents a short succession of schematic diagrams illustrating the structural evolution of anorthosites. The slides discuss the relative abundance of rare earth elements, describe six types of anorthosite occurrence, and contain pictures showing anorthositic texture. This resource is part of the Teaching Petrology collection. http://serc.carleton.edu/NAGTWorkshops/petrology03/index.html

Much of the more than 30 million tons of asbestos used in the United States since 1900 is still present as insulation in offices and schools, as vinyl-asbestos flooring in homes, and in other common products. This book presents a comprehensive evaluation of the relation of these fibers to specific diseases and the extent of non-occupational risks associated with them. It covers sources of asbestiform fibers, properties of the fibers, and carcinogenic and fibrogenic risks they pose. The book may be read online, printed, or purchased from the site.

This site provides an illustrated lecture from a geochemistry course offered by Dr. Scott Wood at the University of Idaho. Topics include a review of the structure and formation of the Earth's crust, atmosphere, and hydrological cycle, and the composition of the atmosphere. Additional topics covered are the concept of residence time, geological and biological sources of components in the atmosphere, acid-base theory, Henry's law and the solubility of gases in water, primary and secondary air pollution, acid rain and how to carry out calculations of the pH of solutions containing acids, among others. The lecture presentation may be downloaded as a PDF document or a PowerPoint presentation. Reading and homework assignments, with answers, are also provided.

This NASA site explains the three major types of atmospheric aerosols - volcanic emissions, desert dust, and anthropogenic aerosols - and how they affect global climate. The site discusses the generation and atmospheric distribution of these aerosols, as well as the chemical and physical processes by which they create global cooling.

This site features Flash and QuickTime animations that illustrate diurnal changes in wind patterns along coasts due to unequal heating of the land and water, the Coriolis Effect on the Earth's surface and in the context of everyday weather patterns, and global circulation, temperature, and wind patterns. The animations can be paused and rewound to stress important points. These resources are suitable for use in lectures, labs, or other teaching activities.

This site is a lecture about crystal structure from Dr. Stephen Nelson at Tulane University. Topics include axial ratios, intercepts of crystal faces (Weiss Parameters), determination of the Miller Index of a crystal, the modified notation of hexagonal systems, which is referred to as Miller-Bravais Indices, and using the Miller Index notation to designate crystal forms. Tables and illustrations accompany the text.

This PowerPoint presentation is part of the Whitman College petrology course. The presentation covers isobaric ternary T-X diagrams (An-Di-Fo), liquidus, intensive variables, cotectic, peritectic, and cooling paths. Solid solution and 4 component diagrams are described as well as the effect of water on melting temperatures. This resource is part of the Teaching Petrology collection. http://serc.carleton.edu/NAGTWorkshops/petrology03/index.html

This animation on the Climate TimeLine (CTL) site depicts changes in land cover due to land use over the past 100 years. Data is based on census data, tax records, land surveys, and historical geography estimates. This visualization is the work of the National Institute of Public Health and the Environment (RIVM, Netherlands) and the Center for Sustainability and the Global Environment (SAGE, USA).

This website provides resources for teachers who are looking for methods to incorporate student research projects into their teaching. The site provides several case studies of how research has been incorporated into courses such as structural geology, hydrology and geography. For each example, the teacher has provided their methods, results, tips, and references. In some cases the assignment is provided. This site would be useful for faculty looking for ways to add research projects to their courses. This resource is part of the Using Data in the Classroom collection. This resource is part of the Using Data collection. http://serc.carleton.edu/usingdata/

This site features Flash, QuickTime, and GIF animations that illustrate the cause of seasons, how seasons impact the sun's apparent path across the Earth's sky, the subsolar point, and the circle of illumination. The animations can be paused and rewound to stress important points. These resources are suitable for use in lectures, labs, or other teaching activities.

This site provides visual resources that illustrate the process of chemical weathering. Animations demonstrate how temperature and precipitation affect the evolution of parent material from highly resistant primary minerals to both secondary minerals and minerals in solution, as well as showing rates of weathering of various common minerals. A collection of photographs gives examples of chemical weathering in both natural outcrops and constructed features such as tombstones and carvings. These resources can be integrated into lectures, labs or other activities.

This PowerPoint presentation is part of the Whitman College petrology course. The presentation covers classification of phaneritic igneous rocks, gabbroic rocks, ultramafic rocks, pyroclastic rocks and volcanic rocks using triangular diagrams, and classification of igneous rocks based on total alkalis vs. silica. This resource is part of the Teaching Petrology collection. http://serc.carleton.edu/NAGTWorkshops/petrology03/index.html

This 24-slide PowerPoint presentation describes the classification of metamorphic rocks using texture and composition. Foliation, lineation, cleavage, schistosity, gneissose structure, hornfels, and granofels are discussed. Specific metamorphic rock types and modifying terms (porphyroblastic, spotted, augen, para-, ortho-) are defined and photographs of some are provided. This resource is part of the Teaching Petrology collection. http://serc.carleton.edu/NAGTWorkshops/petrology03/index.html

Through static map interface, the Climate Diagnostic Center provides access to plots of current and historical United States temperature, precipitation and PDSI drought maps. The interface allows users to plot the raw data and view map visualizations of data.