This site from About, Inc. is a collection of links to geologic articles and resources.

Esta animación describe cómo se absorben los herbicidas por las hojas, e ilustra cómo sus características físico-químicas alteran su movimiento a través de la cutícula. También se muestran mecanismos pasivos y activos de la absorción de los herbicidas a través de las membranas de las plantas.

Acculturation is usually in the direction of a minority group adopting habits and language patterns of the dominant or host society, acculturation can be reciprocal. The goal of this module is to explore the assimilation and separation/ethnic competition models of acculturation.

This journal article presents a catalog of active-learning techniques aimed at fostering student learning in the context of a lecture course. The activities they discuss range from listening practices, to short writing exercises, to complex group exercises. In addition to their review of active-learning techniques, the article discusses some of the potential barriers to implementing active learning and suggests solutions.

Hear about how respect for Earth can help us attain a more sustainable lifestyle in the face of climate change in this video segment adapted from United Tribes Technical College.

The public undeniably loves dinosaurs. Our students turn up in droves to watch movies like "Jurassic Park." So, many colleges and universities are offering introductory Earth history classes with ...

The goal of this exercise is to explore the characteristics and well-being of middle-aged caregivers. 

The goal of this exercise is to explore the ways in which age, social integration, and well-being are related.

In this video adapted from KUAC-TV and the Geophysical Institute at the University of Alaska, Fairbanks, Alaska Native students contribute to research on how their environment is changing as a result of global warming.

Students learn about linear programming (also called linear optimization) to solve engineering design problems. As they work through a word problem as a class, they learn about the ideas of constraints, feasibility and optimization related to graphing linear equalities. Then they apply this information to solve two practice engineering design problems related to optimizing materials and cost by graphing inequalities, determining coordinates and equations from their graphs, and solving their equations. It is suggested that students conduct the associated activity, Optimizing Pencils in a Tray, before this lesson, although either order is acceptable.

This animation shows the process the human body goes through when exposed to allergens.

The goal of this exercise is to compare people's attitudes about the American Dream with their experiences of upward mobility at the turn of the 21st century. Crosstabulation will be used.

The goal of this exercise is to explore the relationship between social identity and attitudes toward out-group members. Frequency distributions, crosstabulations, correlations, and multiple regression will be used.

Find out how angles and symmetry come into play in the game of pool in this video adapted from Annenberg Learner’s Learning Math: Measurement.

Wisconsin Fast Plants, rapid-cycling brassicas, are part of a large family of plants called crucifers (Latin = Cruciferae). This resource tells the story of Crucifers, which are easilydistinguished by the characteristic shape of their flowersĺŃfour petals in the shape of a cross or crucifix. A section, or genus, of the crucifer family is the genus Brassica.Brassicas have great economic and commercial value, and play a major role in feeding the world population. They range from nutritious vegetables, mustards and oil producing crops, to animal fodders and weeds.

Assessment is often viewed as a process that takes time from teaching but since most students are grade concious and will focus on learning what will be assessed, the process of formative assessment can be a ...

In this video segment produced for Teachers' Domain, Andres Berrio, an associate scientist at Biogen Idec, discusses what he has done to succeed in the biotechnology field.

This animation describes and illustrates the different types of flowers found in the family Asteraceae.

Air Pressure, Height and Temperature. This undergraduate meteorology tutorial uses the balancing of gravity/centrifugal forces and the vertical pressure gradient with the ideal gas law to explain how pressure, ...

The goal of this module is to explore some of the factors that might be associated with an individual's level of concern about the environment and global warming. Crosstabulations, frequency distributions, and bar charts will be used.

The goal of this module is to explore White and Black Americans' attitudes about racial discrimination and racial inequality. Crosstabulation will be used.

The goal of this module is to explore attitudes about government accountability and their relationship to political participation in the U.S. Crosstabulation will be used.

The goal of this exercise is to explore the differences in the stability of attitudes about long term and short term issues. Correlation coefficients, comparisons of correlations, and T-statistics will be used.

This animation illustrates how auxins and auxinic herbicides may elicitresponses in plant cells. It describes basipetal transport of auxinsvia influx and efflux carriers and displays a scenario of auxin actionwhere auxin receptors recognize auxins and auxinic herbicides, whichthen induce a signal transduction cascade to turn on various geneproducts. The role of these gene products in plant response is shown aswell.

Bureau of Justice Statistics offers dynamic data analysis tools allows you to generate tables and graphs of arrest, recidivism, federal case processing among other data.

RFSS is the nation's premier system of health-related telephone surveys that collect state data about U.S. residents regarding their health-related risk behaviors, chronic health conditions, and use of preventive services. BRFSS collects data in all 50 states as well as the District of Columbia and three U.S. territories. BRFSS completes more than 400,000 adult interviews each year, making it the largest continuously conducted health survey system in the world. These tools allow the user to perform various analyses and display the data in different means. 

How the conventional breeding method of backcross breeding is done.This is the seventh of a series of seven animations that detail theprocess of crop genetic engineering. To begin at the beginning, see Overview of Crop Genetic Engineering. (To return to the animation previous to this, go to Gene Gun.)

Illustrates the beginning stages of gene cloning. This animation shows how plasmids become recombinant and are inserted into bacteria cells. This is the second of four animations detailing the gene cloning process. To begin at the beginning, see Making a Recombinant Plasmid. (To see the next animation, go to Making a Gene Library.)

Lights, camera, action! Well maybe not a Hollywood movie, there is a lot to be learned by filming bees. Dr. Biology talks with bee movie maker and neurobiologist Brian Smith. Listen in as the two talk about bees, Bee Movie, and even take trip inside a beehive to check out what is buzzing.

In this video segment adapted from NOVA scienceNOW, scientists discuss their attempts to grow human body parts in a jar.

The Biofuels vs Fossil Fuels unit has students explore the similarities and differences between fossil fuels and biofuels. In the process, students investigate the carbon-transforming processes of combustion, photosynthesis, fermentation and respiration. They apply their knowledge of these processes to the global carbon cycle to examine how use of fossil fuels and biofuels have different effects on atmospheric carbon dioxide levels and consequently global climate change. Students use their understanding of the global carbon cycle to study the claim that biofuels, such as ethanol made from plant material, can help reduce the rate of increase of atmospheric carbon dioxide. In addition, students examine the environmental impact of biofuels agriculture.

Overall, this unit has three important goals. These focus on: Matter and energy changes associated with the carbon-transforming processes, the effects of the use of fossil fuels and biofuels on the global carbon cycle and global climate change, and a cost/benefit analysis of the production and use of biofuels.

How can you tell if harmful bacteria are in your food or water that might make you sick? What you eat or drink can be contaminated with bacteria, viruses, parasites and toxins—pathogens that can be harmful or even fatal. Students learn which contaminants have the greatest health risks and how they enter the food supply. While food supply contaminants can be identified from cultures grown in labs, bioengineers are creating technologies to make the detection of contaminated food quicker, easier and more effective.

In this video adapted from NASA, two members of a NASA research team working to produce carbon nanotubes share some background behind this new technology, show examples of how it will be useful, and explain the various tests being performed to ensure readiness for spaceflight.

The goal of this exercise is to explore the ways in which adolescents' body image is related to attitudes and experiences in school. Particular attention will be paid to similarities and differences between boys and girls.

Find out how serious head concussions can be in this video segment adapted from NOVA scienceNOW.

This video segment from The Human Spark observes the brains responses to a series of cognitive tests.