How to Teach Place Value
The instructor recommends using tokens of different colors to teach students about place value. The instructor then changes from using tokens to using a whiteboard for further clarification. (02:45)
Alchemy: Distillation
Science in its earliest beginnings consisted of a practice called alchemy. Alchemy includes the study of chemistry, biology, astronomy, spirituality, physics, and art. Distillation or experiments in purification of substances may have been a part of the practice of alchemy.
Dangerous Air
By tracing the movement of radiation released during an accident at the Chernobyl nuclear power plant, students see how air pollution, like particulate matter, can become a global issue.
Eichmann and his Bureaucrats: What Was Their Job and What Made Them Good At It?
Historian Dr. Yaacov Lozowick, former Director of the Yad Vashem Archives, discusses Eichmann and his Bureaucrats: What Was Their Job and What Made Them Good At It?
The video is part of the series "Insights and Perspectives from Holocaust Researchers and Historians", Supported by the Claims Conference. For more lectures, click here: http://www1.yadvashem.org/yv/en/holocaust/insights/video/index.asp
The Influence of the Eichmann Trial on the Israeli Public's Attitude Towards Holocaust Survivors
Prof. Dalia Ofer, of the Institute of Contemporary Jewry at the Hebrew University discusses the ways in which the Eichmann trial influenced the Israeli public attitude towards Holocaust survivors.
The video is part of the series "Insights and Perspectives from Holocaust Researchers and Historians", Supported by the Claims Conference. For more lectures, click here: http://www1.yadvashem.org/yv/en/holocaust/insights/video/index.asp
Postboxes in postcode IP19
A collection of postboxes in postcode IP19
Exercice 3 (Logique, ensembles, raisonnements) [00109]
Exo7. Exercices de mathématiques pour les étudiants.
Phrase logique, "pour tout", "il existe", négation.
Retrouvez la correction écrite sur http://exo7.emath.fr
Bonus (à 3'11'') : nombre réel positif plus petit que tout epsilon.
Exercice 8 (Logique, ensembles, raisonnements) [00119]
Exo7. Exercices de mathématiques pour les étudiants.
Phrase logique, "epsilon", "pour tout", "il existe".
Retrouvez la correction écrite sur http://exo7.emath.fr
Bonus (Ã 3'13'') : quantificateurs.
2.1 Environment and technology
Global warming: are we responsible? Is our environmental impact damaging the planet? This unit examines the use of ozone depleting technology, the impact of fossil fuel use and explores how the development of technology can influence the direction of a society. From the Industrial Revolution to the present day find out how we have changed the planet.
6.2 Dual labour market theory According to this theory, the labour market is composed of self-contained sub-markets or segments. Segmentation economists argue that ignoring the different identities of these segments and the constraints they place on the workers makes it impossible to understand the nature of labour market disadvantage. Basically, the dual approach hypothesises that a dichotomy has developed over time between a high-wage primary segment and a low-wage secondary segment. Working conditions in the primary se
Science, Non-Science, and Nonsense: From Aliens to Creationism
Lawrence M. Krauss Foundation Professor, School of Earth and Space Exploration and Department of Physics, Arizona State University gives a public lecture.
The distinction between science and fiction and between sense and nonsense has become blurred in popular discourse, most recently manifesting itself around the teaching of intelligent design in public schools. In this lecture Professor Krauss uses examples from government and the media to explore what science is, and what it is not. The lectur
Honeybee Venom Detected by Enzyme Immunoassay
The venom of the honeybee, Apis mellifera, contains numerous enzymes, volatiles, and other components. Allergic individuals develop anti-venom antibodies which may cause hives, anaphylactic shock, and death. In this exercise students detect concentrations of bee venom on nitrocellulose membranes following incubation of membranes with anti-venom antibodies, enzyme-conjugated secondary antibodies, and a colorimetric substrate. The intensity of the colored substrate deposited on the membrane is pro
Chicken Skeleton - Ball and Socket Joint (Limb)
The chicken has wings modified for flight, although it spends much it its time on ground. The bones are very light and long with finger-like ends. The ball and socket joint and hinge joint allow the chicken to move its wing in different directions.
Global Cloud Cover with Fly Away
This animated sequence is a one month sample of composited images from cloud cover data collected from a suite of U.S., European, and Japanese geostationary satellites and U.S. polar orbiting meteorological satellites. This data was composited under the auspices of ISCCP, the International Satellite Cloud Climatology Program
Clouds over North America from GOES-11: August 3, 2000
This animation is one of a series showing the first data from GOES-11. The data shown was taken at one-minute intervals.
Earth Rotation from Galileo Imagery: 3600 x Real-Time
This animation is one in a series created to show an accurate representation of the Earths rotation at different temporal resolutions. The animation is created from images taken by the Galileo spacecraft during a close pass of the Earth on December 11-12, 1990. The animations range from real-time, in which no rotation can be perceived, to 3600 times real-time, in which both the Earths rotation and cloud motion can bee seen. The series also includes an animation in which the Earths rotation has b
TRMM Rainmap for September 1998: Africa
Monthly average rainfall over Africa for September 1998 as measured by TRMM. High rainfall rates are in red.
TOMS Ozone at the South Pole: September Averages from 1979 through 2000
The year 2000s Antarctic ozone hole is the largest ever observed. Scientists continue to investigate the phenomenon, and are somewhat surprised by its scale. Using data from NASAs Total Ozone Mapping Spectrometer (TOMS) instrument onboard the Earth Probe satellite, researchers can evaluate and compare current conditions over the south pole to readings taken by other instruments in years past. Continued monitoring of polar ozone levels helps researchers gain a better understanding of how the plan
NASA CONNECT Who Added the Micro to Gravity?
In NASA CONNECT Who Added the Micro to Gravity?, students will learn about microgravity. They will be introduced to combustion science and the importance of fire safety on the International Space Station. Students will also learn how chemistry plays an important role in microgravity research. They will observe NASA engineers and scientists using measuring, ratios, and graphing to analyze data. Grades 6-8.
Visual Datasets
The Visual Datasets text module discusses the concept of visual learning and presents some suggestions for ways to design learning environments that support students in developing visual literacy skills. Three visual datasets that can be used for problem solving activities in evolution, classification, development, and botany are included:
Caminacules: A dataset of imaginary animals that can be used as the basis for a variety of problem-posing and problem-solving activities in evolution, classi
