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Brain scans may help diagnose dyslexia

Written by Gianfranco D'Aversa.

About 10 percent of the U.S. population suffers from dyslexia, a condition that makes learning to read difficult. Dyslexia is usually diagnosed around second grade, but the results of a new study from MIT could help identify those children before they even begin reading, so they can be given extra help earlier. The study, done with researchers at Boston Children’s Hospital, found a correlation between poor pre-reading skills in kindergartners and the size of a brain structure that connects two language-processing areas. Previous studies have shown that in adults with poor reading skills, this structure, known as the arcuate fasciculus, is smaller and less organized than in adults who read normally.

However, it was unknown if these differences cause reading difficulties or result from lack of reading experience. “We were very interested in looking at children prior to reading instruction and whether you would see these kinds of differences,” says John Gabrieli, the Grover M. Hermann Professor of Health Sciences and Technology, professor of brain and cognitive sciences and a member of MIT’s McGovern Institute for Brain Research. Gabrieli and Nadine Gaab, an assistant professor of pediatrics at Boston Children’s Hospital, are the senior authors of a paper describing the results in the Aug. 14 issue of the Journal of Neuroscience. Lead authors of the paper are MIT postdocs Zeynep Saygin and Elizabeth Norton.

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Asteroids' close encounters with Mars

Written by Gianfranco D'Aversa.

For nearly as long as astronomers have been able to observe asteroids, a question has gone unanswered: Why do the surfaces of most asteroids appear redder than meteorites — the remnants of asteroids that have crashed to Earth?

In 2010, Richard Binzel, a professor of planetary sciences at MIT, identified a likely explanation: Asteroids orbiting in our solar system’s main asteroid belt, situated between Mars and Jupiter, are exposed to cosmic radiation, changing the chemical nature of their surfaces and reddening them over time. By contrast, Binzel found that asteroids that venture out of the main belt and pass close to Earth feel the effects of Earth’s gravity, causing “asteroid quakes” that shift surface grains, exposing fresh grains underneath. When these “refreshed” asteroids get too close to Earth, they break apart and fall to its surface as meteorites.

Since then, scientists have thought that close encounters with Earth play a key role in refreshing asteroids. But now Binzel and colleague Francesca DeMeo have found that Mars can also stir up asteroid surfaces, if in close enough contact. The team calculated the orbits of 60 refreshed asteroids, and found that 10 percent of these never cross Earth’s orbit. Instead, these asteroids only come close to Mars, suggesting that the Red Planet can refresh the surfaces of these asteroids.

“We don’t think Earth is the only major driver anymore, and it opens our minds to the possibility that there are other things happening in the solar system causing these asteroids to be refreshed,” says DeMeo, who did much of the work as a postdoc in MIT’s Department of Earth, Atmospheric and Planetary Sciences.

DeMeo and Binzel, along with former MIT research associate Matthew Lockhart, have published their findings in the journal Icarus.

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New Map Yields Better View of Forest Changes

Written by Gianfranco D'Aversa.

The ravages of deforestation, wildfires, windstorms, and insects on global forests are revealed in unprecedented detail in a new study based on data from Landsat satellites. Researchers developed new mapping tools that are the first to document forest loss and gain at high resolution and with a consistent method around the globe. The maps will allow scientists to compare forest changes in different countries and to monitor annual deforestation.

Since each pixel in a Landsat image shows a 30-meter square of land—an area about the size of a baseball diamond—researchers can see enough detail to tell local, regional, and global stories. University of Maryland researcher Matthew Hansen and colleagues analyzed 143 billion pixels in 654,000 Landsat images to compile maps of forest loss and gain between the years 2000 and 2012. Key to the project was a collaboration with a team from Google Earth Engine, who took the models developed at the University of Maryland for processing and characterizing the Landsat data and reproduced them in the Google Cloud. Years of data processing was reduced to days.

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I'm Feeling Like Red Today. You?

Written by Gianfranco D'Aversa.

In many workplaces, wearing the same outfit as your coworkers would come off as a bit strange. Not so if you happen to be in Antarctica as part of Operation IceBridge. In the photograph below, IceBridge team member Theresa Stumpf, right, and other passengers have just arrived on McMurdo's sea ice runway. They touched down on Nov. 12, 2013 aboard a U.S. Air Force C-17 transport aircraft. In past years, IceBridge campaigns were based in Punta Arenas, Chile. Flying from McMurdo this year will make it possible for the team to survey areas they couldn't during previous missions.

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8 Ways to Accidentally Infect Your Friends with Malware

Written by Gianfranco D'Aversa.

A lot has been said over the years about the best ways to protect your machine from attacks and malicious code. But where do those recommendations intersect with ways to protect your friends from attacks? By failing to protect your own data, you’re sometimes putting them at risk as well. Here are a few ways people end up mindlessly spreading the malware love. USB sticks are considered an infection vector unto themselves, as many Windows-based threats will attempt to run automatically upon inserting the drive. While it may not affect you, it may get your friends.

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An application for taking school notes and sharing them with friends

Written by Gianfranco D'Aversa.

mySchoolNotebook.com is an application for taking school notes and sharing them with friends. Say no to heavy and expensive notebooks, disorganized notes, and missing notes from classes you couldn’t attend. MySchoolNotebook.com allows you to take notes into well-organized notebooks divided into individual topics with automatically numbered classes and share them instantly with your friends. Other features: Easy sign-in via Facebook account or e-mail registration, Drawing tool, File upload, Printing of notes, Conversion to PDF, Recording and taking of pictures in iOS version, Offline version - no Internet, Connection needed, Search engine. MySchoolNotebook.com mainly supports Google Chrome, Apple Safari, and Firefox 4. We will try to broaden the number of supported browsers to Opera and Microsoft Internet Explorer 9+. Offline mode works in Google Chrome, Apple Safari, and also Opera in the future. Other browsers do not support used technology.

A List of The Best Free Digital Storytelling Tools for Teachers

Written by Gianfranco D'Aversa.

Digital storytelling, the practice of combining narrative with digital content, is gaining more ground in the educational field.Many schools and educational centres all around the globe are including learning method in their curriculums and the results are really promising : more of students engagement and a bigger degree of motivation. Telling a story is a powerful way to communicate with others. Think about those moments when you would share a story about yourself with your students and how everyone of them is dailed in waiting on the next word to come out of your mouth. And when this storytelling is combined with a set of powerful digital tools it becomes a truly authentic learning experience that helps students develop a wide range of intellectual skills. Read more

Top Educational iPads Apps for Teachers

Written by Gianfranco D'Aversa.

Another great resource of educational apps for teachers. Below is a list curated by Gary and which has been making rounds online. This is probably one of the most viewed lists I have ever seen. It has more than 200k page-views and counting. I checked the apps it included and I knew why it is so popular. Gary has carefully handpicked the most useful and practical apps for educators and teachers and aggregated them all in one place for users to access and share. You might be already familiar with some of these apps and I am pretty sure you might have tried some but you will definitely find new and awesome ones to try at your school or with your students. I am sharing the list with you below and I am also adding it to my iPad resources section here in Educational Technology and Mobile Learning. Read more

FlipSnack. PDF to Flash page flip. Flipping book software

Written by Gianfranco D'Aversa.

FlipSnack is a flipping book software that lets you convert PDF documents into Flash page flip digital publications that you can embed into your website. Creative teaching: FlipSnack allows you to turn PDF files into amazing interactive books. It’s an ideal tool for teachers and students to collaborate and share their work with parents and colleagues. Easy to embed on any website or blog, these flipbooks make classes and courses look fun and are also easy to download. Here are a few other ideas of what you can do with FlipSnack, but the possibilities are endless: Create a flipbook with images of your baby’s first year; Turn your research thesis into a shareable flipbook that people will want to read; Make a catalog that shows off all your best items for sale on Etsy; Write an office manual that new employees can review before starting work. Read more

5 Great Ways to Document Students Mobile Learning

Written by Gianfranco D'Aversa.

I am actually working on an academic paper on Education 3.0 which I am intending to publish in one of the mobile tech journals. I will provide you with a synthesis of the main points I am covering but I can not republish it here in my blog though I have the full authorship rights because republishing a published paper is prohibited by most academic journal policies. However, one of the things that really drew my attention while working on this paper is how teachers can document students' learning in a world increasingly going mobile. Digging deeper into this topic, I decided to share this short guide with you to help you better understand and learn about the mobile tools to use to document your students learning while on the go. Read more

Gianfranco D'Aversa

Mexico City // Rome // Foggia

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