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Earth's Core Hotter Than First Believed

coreUsing a series of very technical tests, scientists from the French research facility CEA have determined that the Earth's core is roughly 6,000 degrees Celsius. That is approximately 1,000 degrees hotter than the temperature obtained by tests in the 1990s.

These new figures show that the center of the Earth is just as hot as the surface of the sun.

The experiment that supplied the new temperature used X-rays to probe tiny samples of iron at extraordinary pressures to examine how the iron crystals form and melt. The BBC reported that "To replicate the enormous pressures at the core boundary - more than a million times the pressure at sea level - they used a device called a diamond anvil cell - essentially a tiny sample held between the points of two precision-machined synthetic diamonds.

Once the team's iron samples were subjected to the high pressures and high temperatures using a laser, the scientists used X-ray beams to carry out "diffraction" - bouncing X-rays off of the nuclei of the iron atoms and watching how the pattern changed as the iron changed from solid to liquid."

 

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Radical!

Are you a RAD teacher?

No~ not a cool teacher or a Radical person who catches waves on their surfboard.

Rather~ RAD stands for reflect~ adjust~ deliver.

I think good teachers reflect on their practices--and not just test scores. Yes~ its a must to reflect on test scores and data and make adjustments in instruction~ but I think you should go far beyond that. The great thing about summer (besides time off and a chance to recharge) is that it gives teachers a chance to reflect...

Web Giants Warn of Malware

FBITwo giants of the Internet want to make sure you can still get to them after July 9.

Google and Facebook are actively scanning the computers of their users to find some of the nearly 1 million people who have been infected with the DNSChanger malware in the U.S. Google is displaying a warning across the top of its search results page, while Facebook has placed a...

Making a Difference

The letter started off by stating You have no idea the impact you have had on my childs life during this short school year.

Wow~ I paused after reading the letter handed to me this week by one of my students. A three-page letter~ hand-written by the parent. She said her son worked harder than ever~ and that for the first time~ he wasnt pushed into the corner and ignored because he was energentic and unfocused at times. She wrote about how he was now talking about sav ing money...

Do You Play Games?

Students that are engaged in learning are more likely to enjoy learning and will~ in turn~ be more open to retaining your lesson. Fun educational games can assist in the fun. By using everyday objects to create curiosity~ students and teachers can both increase the joy of the learning environment. Even adults prefer novelty. Think about the last time you had to sit in a lecture. Most adults get up~ text~ or talk during these types of presentations. Students...

Teachers Debate Social Media Use in...

TweetIn a story by Paul Barnwell of TeacherMagazine.org posted on Education Week May 30, 2012, the self-described tech-leaning teacher derided the use of social media technologies like Facebook as having little to no academic value in the classroom. Barnwell wrote:

“I’ve always been open to new technologies in the classroom—in fact, in 2010 I argued that we were doing...

Amazon Slashes Children's Titles...

kindle fireApple and its iPad have the lion’s share of the educational market locked up, but Amazon and its Kindle Fire are giving administrators reason to pause before blindly ordering up tablets from Cupertino.

Amazon is offering 47 classic children’s books for 99 cents each. That is an impressive price cut from the typical $7.77 the book typically cost. Among...

Count Up!

Today~ I pulled out a super soaker squirt gun and blasted my students in the middle of class. Oh yes~ I calmly removed it from a bin where I had been hiding it and let loose. They screamed~ they jumped~ and yelled "What's going on?"

After the smoke cleared and the children settled down~ I simply said:

"What you have just experienced is an act of terrorism."

I then led into my lesson on terrorism and how it is unexpected~ shocking and violent. Later~ the class watched...

Pulitzer Winner Publishes Via Twitter

New YorkerProving that even Pulitzer Prize winners are embracing social media, decorated author Jennifer Egan is publishing her next short story via Twitter.

Egan’s story, “Black Box,” began with a first 140-character Tweet on the New Yorker Fiction Twitter account last week. A new line is published every minute from 8 to 9 pm EST. This format of a Tweet-A-Minute...

High Schooler Sets Physics World Abuzz

issac newtonA 16-year-old German high school student has written a paper that purports to have solved two mysteries that were beyond the intellect of the great Isaac Newton.

Shouryya Ray, an Indian-born student who won second prize this month in the math and informatics...

Final Days

Weve all been there before. Its just weeks or days before summer vacation. The students have mentally checked out~ and maybe you have as well. The class has completed standardized testing~ grades are in~ and maybe as in my case~ students already have graduated and received their diploma.

So what do you do with the days left in the school year? How do you use them productively and remain motivated in the process? This has been a burning question in my mind for the last several...

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