Science Bulletins:Biodiversity Boosts Human Health
Hantavirus is an infectious pathogen carried by rodents and occasionally passed to humans, where it can be deadly. A new study led by researchers from the University of New Mexico demonstrates that when rodent biodiversity decreases in Panamanian forests, the risk of hantavirus transmission in these ecosystems increase. Since deforestation can reduce species diversity, the findings have implications for people who live at the fringes of fragmented woodlands.
Popplet for iPad
This informative video gives step by step directions on how to use the popplet app for the iPad. This graphic organizer could be used in endless ways in the classroom. This is a great professional development tool to help enhance technology instruction in the classroom. (3:55)
Phosphorus (updated) - Periodic Table of Videos
Phosphorus is element 15 on the periodic table. Videos about every element at http://www.periodicvideos.com/
ISS Update: After the Venus Transit
ISS Update commentator Brandi Dean interviewed astronaut Mario Runco about the results of the Expedition 31 crew's effort to photograph Venus transit. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.
Rembrandt, A Girl at a Window, 1645 - Smart History at Khan Academy
Rembrandt Harmensz van Rijn, A Girl at a Window, 1645, oil on canvas, 32 x 24 in. (81.6 x 61 cm), (Dulwich Picture Gallery, London) Speakers: Pippa Couch, Rachel Ropeik. (2:50)
Economic Update - A Successful Worker Co-op Examined
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This lesson introduces the concepts of longitudinal and transverse waves. Students see several demonstrations of waves and characterize them by transverse and longitudinal behavior. This lesson also introduces the Sunken Treasure theme of the Sound and Light unit a continuous story line throughout the lessons.
Slinkies as Solenoids
In this activity, students use an old fashion children's toy, a metal slinky, to mimic and understand the magnetic field generated in an MRI machine. The metal slinky mimics the magnetic field of a solenoid, which forms the basis for the magnet of the MRI machine. Students run current through the slinky and use computer and calculator software to explore the magnetic field created by the slinky.
Magnetic Resonance Imaging
This lesson ties the preceding lessons together and brings students back to the grand challenge question on MRI safety. During this lesson, students focus on the logistics of magnetic resonance imaging as well as the MRI hardware. Students can then integrate this knowledge with their acquired knowledge on magnetic fields to solve the challenge question.
This lesson discusses solenoids. Students learn how to calculate the magnetic field along the axis of a solenoid and complete an activity exploring the magnetic field of a metal slinky. Solenoids form the basis for the magnet of an MRI. Exploring the properties of this solenoid helps students understand the MRI machine.
Thrown for a Loop
In this lesson, students begin to focus on the torque associated with a current carrying loop in a magnetic field. Students are prompted with example problems and use diagrams to visualize the vector product. In addition, students learn to calculate the energy of this loop in the magnetic field. Several example problems are included and completed as a class. A homework assignment is also attached as a means of student assessment.
Strong as the Weakest Link
To introduce the two types of stress that materials undergo compression and tension students examine compressive and tensile forces and learn about bridges and skyscrapers. They construct their own building structure using marshmallows and spaghetti to see which structure can hold the most weight. In an associated literacy activity, students explore the psychological concepts of stress and stress management, and complete a writing activity.
Cuttlefish have the ability to change their skin coloring and pattern to match their surroundings. The cuttlefish uses this ability to camouflage, or hide, itself against its background and also to communicate with other ocean dwellers.
Las Mañanitas - Vincente Fernandez (en español)
Cantado por Vicente Fernández, Las Mañanitas es una canción tradicional de cumpleaños. Esta canción es conocida en muchos países de Latinoamérica. El video trae buena calidad de sonido. También, tiene las letras escritas en inglés. (2:39)
Dia de los Muertos (en español)
Aquí tienen un video sobre el Día de Los Muertos en Santa Ana, CA. El video enseña ofrendas, comida, y cosas importantes de este día. Alomejor sería útil para un ejemplo auténtico de gente celebrando la vida de sus seres queridos. (2:38)
PreK Science Center 3
Dollar Diversification Helps Euro
June 30 - The diversity of euro zone economies means investors can chose which risk they take on and this should help maintain the single currency's strength despite the Greek debt crisis, two top analysts say.
Water and Peace in Ivory Coast: Reconciliation After Civil War
Learn more: http://pulitzercenter.org/projects/ivory-coast-water-management-peace-ethnic-violence After recent civil war divided Ivory Coast's communities, some in Ivory Coast look to local water management as a key to reconciliation, social cohesion and long-lasting peace. As the Ivorian government struggles to implement the Truth and Reconciliation Commission to mend communal divisions after the civil war, Ivory Coast communities are already working towards peace on one very important issue:
ISS Update: NEEMO 16
ISS Update commentator Josh Byerly interviews astronaut Stan Love about the NEEMO 16 mission from Aquarius Base. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.
Books Read this Year