Web 2.0: Risks for STI/HIV - Opportunities for Prevention
is lecture explores the risks and prevention opportunities presented by the emergence of social networking and internet dating sites. Presented by the Department of Population, Family, and Reproductive Health
Author(s): Kees Rietmeijer, MD, PhD

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Content within individual OCW courses is (c) by the Johns Hopkins University and individual authors unless otherwise noted. JHSPH OpenCourseWare materials are licensed under a Creative Commons License

Virtual Pedagogical Agents as Aids for High School Physics Teachers
The Pathway project is improving the quality of physics teaching and the number of available physics teachers by providing virtual expert help on issues of pedagogy and content. The project combines Carnegie Mellon’s Synthetic Interviews and state-ofthe- art digital video library technology with pedagogical advances developed at Kansas State University, and materials contributed by master teachers. The Synthetic Interview is a technology and technique that creates an anthropomorphic interface i
Author(s): Stevens Scott,Zollman Dean,Christel Michael,Adrain

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Motor Skills: Prelocomotor HQ
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What's Gotten Into You?
In this activity, students use models to investigate the process and consequences of water contamination on the land, groundwater, and plants. This is a good introduction to building water filters found in the associated activity, The Dirty Water Project.
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Water Power
In this activity, students observe a model of a waterwheel to investigate the transformations of energy involved in turning the blades of a hydro-turbine into work. Students work as engineers to create a model for a new waterwheel while considering resources, such as time and materials, in their design. Students also discuss and explore the characteristics of hydropower plants.
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Internet Scout Project
In June 2000, the Fourteenth Symposium on Thermophysical Properties was held to review the progress of thermophysics over the last 100 years and to look forward to the next century of research and development in thermophysics. The National Institute of Standards and Technology (NIST) provides a special publication online covering the event, including overviews of topical issues by professionals in the field and several brief, invited essays on issues raised in the forum by panelists, audience pa
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"The NIST X-ray Photoelectron Spectroscopy (XPS) Database gives easy access to the energies of many photoelectron and Auger-electron spectral lines." The website offers concise definitions of the data fields. Users can search the element data by binding energy, auger kinetic energy, auger parameter, doublet separation, chemical shift, or surface/interface core-level shift. The website allows users to retrieve data for groups of elements, an element in a compound, chemical name, and chemical clas
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Eight Little Spiders - Basic Subtraction
This Sesame Street subtraction rhyme starts with 8 spiders. One by one, the spiders are subtracted leaving only one at the end. Shows the strategy of "take away one and count the remaining objects." (1:11)
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Internet Scout Project
The report "presents a comprehensive assessment of the Agency's annual performance toward the strategic goals and objectives in the Agency's September 2000 Strategic Plan... and... focuses on environmental accomplishments and benefits to the public resulting from implementation of Agency programs." Visitors can download or read online performance results in the agency's efforts for clean air and water, preventing pollution, waste management, reducing global and cross border risks, and providing
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Internet Scout Project
"Earth Force engages young people as active citizens who improve the environment and their communities now and in the future." Educators can learn about Earth Force's three programs: Community Action and Problem solving (CAPS), the Global Rivers Environmental Education Network (GREEN), and Earth Force After School. Users can discover students' many accomplishments such as creating reusable fabric grocery bags, recycling cell phones and ink cartridges to earn money, and cleaning up litter. The To
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Internet Scout Project
Purdue University created this website to promote its organic chemistry department's diverse research initiatives. This expansive website provides links to materials on twelve of the faculty's chemistry research groups. Research includes NMR imaging of micellar solutions, hydride fuel cell examinations, dimerization inhibitors of transcription factors, and gas phase synthesis. Users can find lists of the many publications and view images and photos of the division's work and facilities. Visitors
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Internet Scout Project
In his State of the Union Address on January 28, 2003, President Bush made a case for further fuel cell development. Current efforts in this area have not determined how to efficiently produce or extract hydrogen for the cells. In hopes of solving this problem, Bush proposed a $1.2 billion FreedomFUEL initiative. FreedomFUEL is closely related to the FreedomCAR program, which has its homepage at the second site. News releases and fact sheets are available, as well as overviews of fuel cells and
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Lecture 18 - 11/30/2010
Lecture 18
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The Wellcome Trust Sanger Institute: The Cancer Genome Project
Supported by the Wellcome Trust Sanger Institute, the Cancer Genome Project (CGP) "is using the human genome sequence and high throughput mutation detection techniques to identify somatically acquired sequence variants/mutations and hence identify genes critical in the development of human cancers. This initiative will ultimately provide the paradigm for the detection of germline mutations in non-neoplastic human genetic diseases through genome-wide mutation detection approaches." The CGP websit
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Essential Science for Teachers: Life Science: Session 4. Plant Life Cycles
What is a plant? One distinguishing feature of members of the Plant Kingdom is their life cycle. In this session, flowering plants serve as examples for studying the plant life cycle by considering the roles of seeds, flowers, and fruits. A comparison to animal life cycles reveals some surprising similarities and intriguing differences.,This segment looks at the similarities between plants and animals. Children give their ideas about seeds. Most children believe that plants do not reproduce se
Author(s): Harvard-Smithsonian Center for Astrophysics

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Essential Science for Teachers: Life Science: Session 4. Plant Life Cycles
What is a plant? One distinguishing feature of members of the Plant Kingdom is their life cycle. In this session, flowering plants serve as examples for studying the plant life cycle by considering the roles of seeds, flowers, and fruits. A comparison to animal life cycles reveals some surprising similarities and intriguing differences.,Children's ideas about seed are discussed, with references to BSCS TRACKS. Children are about 7/8 years old. They soak lima beans and see the plant embryos. A
Author(s): Harvard-Smithsonian Center for Astrophysics

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Essential Science for Teachers: Life Science: Session 2. Classifying Living Things
How can we make sense of the living world? During this session, a systematic approach to biological classification is introduced as a starting point for understanding the nature of the remarkable diversity of life on Earth.,This segment deals with the "other" organisms that do not easily fall into the plant or animal category. 7 year olds talk about a third ring to the Venn diagram and that bacteria would be an "other".
Author(s): Harvard-Smithsonian Center for Astrophysics

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National Heart, Lung, and Blood Institutes' Diseases and Conditions Index
This site provides information about heart, lung, and blood diseases and sleep disorders. Learn how the heart works. Find out about aneurysms, angioplasty, electrocardiograms, heart attacks, high blood pressure, asthma, cystic fibrosis, sickle cell anemia, insomnia, narcolepsy, and more.
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Ask the Answer Worm!
A product of the National Resource Conservation Service and the US Department of Agriculture, the Ask the Answer Worm Web site gives teachers a great resource to teach young students about the importance of soil as a natural resource. S.K. Worm answers thirteen important questions related to soil conservation, such as "How does water stay in the soil?" and "Why do plants like soil?" Each concise answer is accompanied by a fun and colorful illustration of S.K. Worm commenting on the question at h
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Cell Biology Improvement Drive
Wikiversity participants with an interest in Cell biology can participate in the "Cell biology improvement drive". This Learning Project is a service-oriented Wikiversity project devoted to improvement of Cell biology articles at Wikipedia and development of the Wikibooks textbook about Cell biology. Participants in the project can become involved in the construction of new Wikiversity pages that are concerned with Cell biology. This "Cell biology improvement drive" also includes improvement of
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