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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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President to Bring High-Speed Internet...

In an effort to boost achievement and better prepare students for the workforce, President Obama is spearheading a program that will bring high-speed Internet access to 99 percent of America's K-12 schools.

Dubbed ConnectED, the program aims to accomplish its goal in the next five years. In addition to bringing Internet speeds of at least 100 Mbps and...

Using the News in the classroom: Moving...

With the pressure of testing creating more focus on getting kids ready for tests~ current events may be getting moved to the side-lines. Use news stories as possible Bell ringer activities(or whatever the current jargon is for a short activity for the students to do) especially while you are checking homework~ doing attendance~ at the end of the period~etc.) Find a news story~ write up a brief summary and then include two reaction questions for the students...

Summer Skills

Summer is an excellent time to learn new skills and sharpen old ones.

Courses in common core standards~ classroom management~ and differentiated instruction all have their value. However~ Id like to offer a slightly different suggestion for summertime training. Think of it as an opportunity to develop a new skill or gain a new experience~ one that might be a little out of the box but could add great value to your classroom.

What do I mean?

What if you took an acting...

Android Apps to Invade Schools

Android apps are planning an invasion of the education market, and teachers and administrators are taking sides in a serious tech battle.

The recent announcement of Google’s new app store for educators is interesting for a number of reasons. The move signals a clear attempt to cut off what, up until this point, has been a hard line between Apple and the K-12...

Summer Fever

Lets face it many of us feel exhausted by this time of the school year.
Others have mentally checked out.
Your students, in similar fashion, are dreaming of sandy beaches, lemonade, sleeping in late, and playing video games until their fingers hurt.
I call it the Summer Fever, and like germs, its highly contagious. With standardized testing complete, many students begin to feel like the school year is over. The problem is, its not. We are left with the demands of teaching,...

iPad Keyboard Made for Schools

A new keyboard from the folks at Logitech has got K-12 teachers salivating. Unlike other keyboards, the Wired Keyboard for iPad plugs into the device rather than connecting via Bluetooth.

The advantages Bluetooth provides are well documented, but largely lost in a classroom of 20+ students. Logitech argues that it is a challenge for teachers to simultaneously pair...

How do you FInish up the School Year?

How do you finish up the school year?
So many things to do on the check off list. In addition to lots of administrative requirements~ here are some things I also do before I close the door with a "Yippee...it's summer!" and leave the building.
1. Before the students leave~ I have them write a Dear Incoming 6th grade letter. I tell the students to list a couple of tips that they'd like to give the incoming students about my social studies class and how to be...

Summertime Idea

I want to share an idea I had for my gifted students~ but I believe would enhance the summer education of any childand make parents appreciative as well.

After receiving questions about what their gifted child could do over the summer~ I proposed the idea of having my students continue their independent research or create new research projects to work on during the summertime. I then provide parents with a project outline that helps both the parent and child navigate the process....

Summertime Idea

I want to share an idea I had for my gifted students~ but I believe would enhance the summer education of any childand make parents appreciative as well.

After receiving questions about what their gifted child could do over the summer~ I proposed the idea of having my students continue their independent research or create new research projects to work on during the summertime. I then provide parents with a project outline that helps both the parent and child navigate the process....

Self Contained or Departmentalized...

Self Contained or Departmentalized Classrooms for 5th and 6th Grade?

For those veteran teachers~ you know that the old is often "new" again when it comes to teaching!

When I first started teaching back in(yikes...1973)~ I started in 5th grade. As a self contained classroom of upper elementary students~ I taught science~ math~ language arts~ social studies~ reading and even a daily penmanship lesson! The following year~ my team "moved up" with our classes and I taught 6th grade....

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