A grade 1-2 class, working in groups, develops their sense of larger
numbers by estimating and counting the number of seeds in pumpkins. NCTM standards: number sense and numeration, estimation, communication, reasoning.
Natural Inquirer Journals: Wildland Fire
This edition of the Natural Inquirer is all about wildland fire. You will learn about the benefits of wildland fire, as well as some of its dangers. You will learn what fire scientists are learning about wildland fire. They are learning, for example, 1) that wildland fire should not be completely eliminated from natural environments, but it should be managed; 2) how to predict which weather conditions most favor a wildfire being started; 3) about the relationship between wildland fires and globa
Essential Science for Teachers: Earth and Space Science
In-depth interviews with children that uncover their ideas about the topic at hand.,The interviewer identifies the student's ideas about the interior of the earth being made up of hot magma by asking her to draw a picture. When the student mentions volcanoes, the interviewer probes further to ask her to explain what a volcano is.
Essential Science for Teachers: Physical Science: Session 2. The Particle Nature of Matter: Solids,
What simple idea links together all of chemistry and physics? How can a close study of the macroscopic differences among solids, liquids, and gases support a microscopic model of tiny, discrete, and constantly moving particles? In this session, participants learn how the "particle model" can be turned into a powerful tool for generating predictions about the behavior of matter under a wide range of conditions.,This segment shows an example of probing questions about phenomena to find out if the
Earth Exploration Toolbook Chapter: Investigating Earthquakes: GIS Mapping and Analysis
This activity describes the technique of preparing latitude-longitude based data so it can be imported into a geographic information system (GIS). The chapter describes the steps to create a map to display data and guides users through some basic geographic analyses. The focus of the chapter's case study is earthquake prediction. Users download and format near real-time and historical earthquake data from the USGS. They import the data into ArcVoyager Special Edition GIS software, and analyze pa
Learn about forces that causes lighting.
EngineSim and RangeGames Downloads
EngineSim was developed at the NASA Glenn Research Center in an effort to foster hands-on, inquiry-based learning in science and math. EngineSim is a simulator that models the design and testing of jet engines. The program works in two modes: Design Mode or Tunnel Test Mode. In the Design Mode, you can change design variables including the flight conditions, the engine size, the inlet performance, the turbo machinery compressor and turbine performance, the combustors or burner performance, or th
Allometry: Size and its consequences or... Why aren't there 20 foot tall ants?
Evolution has resulted in changes in the sizes and forms of organisms. Everything about the biology of an animal, including its physiology, anatomy, and ecology, is influenced by its body size. Frequently there seem to be limits on the sizes that different organisms can attain, even when larger size might be thought to be evolutionarily advantageous. Often an increase or decrease in size is correlated with a change in proportions. Understanding the significance of a particular morphology or inte
Culturing Experimental Organisms for Use in Teaching Biology
Methods for the collection and the culturing of a variety of experimental organisms used in teaching biology are discussed. The organisms include protozoans, hydra, planaria, vinegar eels, aquatic snails, Daphnia, brine shrimp, frogs, turtles, flesh flies, and Tenebrio. Culturing parameters, overall care, handling, diet, feeding procedures, and specific environmental conditions are examined.
Symba: a Framework to Support Collective Activities in an Educational Context
Symba is a Web-based framework designed to support collective activities in a learning context. It has been constructed with a double objective, (1) make students explicitly work out their organization and (2) provide tailorability features to allow the students to decide about the tools and resources they want to be accessible in order to achieve the tasks they have defined. Symba dissociates an organizational level and an activity level. The organization level allows students to organi
New Media and Open and Distance Learning: New challenges for Education in a Knowledge Society
The "digital society" provides not only with new technology, but also with new concepts. Information plays a central role and becomes a valuable good, but knowledge cannot be reduced to information, and one aim for educators is to contribute in a "knowledge society", not only an "information society". A knowledge society is structured in networks, enriching the traditional hierarchies; a knowledge society promotes a kind of "collective intelligence". In such a society, open and distance learning
Assembly of Proteins in Membranes II from the course General Biochemistry and Molecular Biology
General Biochemistry and Molecular Biology - Fall 2006. This course covers molecular biology of prokaryotic and eukaryotic cells and their viruses. Mechanisms of DNA replication, transcription, translation. Structure of genes and chromosomes. Regulation of gene expression. Biochemical processes and principles in membrane structure and function, intracellular trafficking and subcellular compartmentation, cytoskeletal architecture, nucleocytoplasmic transport, signal transduction mechanisms, and c
Archaeology as a Perspective on Sex and Gender in the Past
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Commemoration: Visual texts
This unit explores the commemoration of war through treating two war memorials – the Sandham Memorial Chapel and the Royal Artillery Memorial – as 'visual texts'. By helping you to respond to visual cues the unit aims for you to develop your understanding of these memorials, not only as memorials, but as artefacts or 'made objects'. It does this through consideration of such factors as the location of the monument; its function and purpose; its symbolism or realism; use of materials and over
Using Insects in the Classroom
Insects are an excellent resource for science education. Many insects are easily maintained in the classroom and can happily thrive despite being handled and kept in captivity. The remarkable diversity in form and function of commonly found insects promotes interest and enthusiasm in observing the natural world. Insects can also be used to model a variety of scientific principles. The objectives of this page are to give educators basic information about insects and ideas on how to use insect
Lorenz Attractor Periodic Orbits
The butterfly-like Lorenz attractor is a simplified model of two-dimensional convective fluid flow and is one of the best known images of chaos. Embedded in this attractor are unstable periodic orbits described by Viswanath and this model computes a number of these orbits. Each periodic orbit is classified by the number of times the trajectory orbits the A and B fixed points before it repeats. Note that because the attractor is chaotic and because of numerical errors and the finite precision of
Health Care Workforce and Other Initiatives to Assist Medically Underserved Communities and Populati
Section 32.1-122.22 of the Code of Virginia requires that the State Health Commissioner submit an annual report to the Governor and to the General Assembly regarding the activities of the Virginia Department of Health (VDH) in recruiting and retaining health care providers for underserved populations and areas throughout the Commonwealth. The annual report is required to include information on: (i) the activities and accomplishments during the reporting period; (ii) planned activities for the co
Discrimination, Distrust, and Racial/Ethnic Disparities in Antiretroviral Therapy Adherence Among a
Objective: Although discriminatory health care experiences and health care provider distrust have been shown to be associated with health care disparities, little is known about their contribution to racial/ethnic disparities in antiretroviral therapy adherence. We therefore sought to assess the extent to which discriminatory health care experiences and health care provider distrust influence treatmentrelated attitudes, beliefs, and self-reported adherence in a national sample of HIV-infected pa
Self-Care Among Chronically Ill African Americans: Culture, Health Disparities, and Health Insurance
Little is known about the self-care practices of chronically ill African Americans or how lack of access to health care affects self-care. Results from a qualitative interview study of 167 African Americans who had one or more chronic illnesses found that self-care practices were culturally based, and the insured reported more extensive programs of self-care. Those who had some form of health insurance much more frequently reported the influence of physicians and health education programs in sel
Embedding the concept of competency maps
This presentation outlines the background, context and transferability of a competency mapping tool originally developed in health but suitable for enterprise