Using 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."

Do you write an end of the year letter to your students? If, so, please share.Here is the one I used with my 6th graders:
Dear students,
The end of the school year has passed so very quickly. It seems like we were just beginning to learn about the world in which we live AND a bit about each other, and now, it is time for me to say goodbye to you as you continue to...

Flag Day is coming, a day to honor the flag of the United States. This year, Flag Day is June...

Before class, one of my third-grade students came to me and showed me a picture of a dog that she had drawn. I noticed that it looked very much like every other dog picture that she had drawn.
Not wanting to discourage her creative spark, I gently told her that I liked it and that I noticed she had drawn the shape of the dog’s head in the very same manner in every...
When Quincy Jones was chosen to produce "We Are The World" in 1985, the idea was that it would be a collective effort of the music community donating its time and talents to make a difference for others in crisis. Who can forget the story about the world's biggest recording stars being told to "check your egos at the door" - this cause is so much bigger than your celebrity.
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Recess-it is a precious commodity to elementary students.
Having it taken away can be a most painful experience. So when a group of gifted students faced losing it because their classmates were being noisy and uncooperative, they began to stress. I felt their pain, but I also saw something else-an opportunity to challenge them.
After they groaned...
The use of high-stakes achievement tests around the world have created controversy among teachers, parents, students, administrators, policy makers and heads of state. But whether or not you're a supporter of high-stakes testing, the fact remains that for now, these assessments exist; so perhaps the more important inquiry to pursue is how do teachers balance preparation for...

Today, the Baltimore City Schools are closed as a result of the #FreddieGray protests. In response to the unrest in Charm City, the Washington Post offered a piece on...

If we want gifted kids to be creative, motivated, balanced, socially competent, passionate about learning, then as adults, we have to be the essence of that which we seek. I know it’s a tall order, but if you are preaching to gifted students about using their potential and being innovative, and you are doing the bare minimum to get by as an educator, it simply isn’t going to work.
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