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Sreedharen Sasidharen

Magnet - Wikipedia, the free encyclopedia - 11 views

    • Sreedharen Sasidharen
       
      What is it?
  • A magnet (from Greek μαγνήτις λίθος magnḗtis líthos, "Magnesian stone") is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.
  • Ferromagnetic materials can be divided into magnetically "soft" materials like annealed iron, which can be magnetized but do not tend to stay magnetized, and magnetically "hard" materials, which do. Permanent magnets are made from "hard" ferromagnetic materials such as alnico and ferrite that are subjected to special processing in a powerful magnetic field during manufacture, to align their internal microcrystalline structure, making them very hard to demagnetize. To demagnetize a saturated magnet, a certain magnetic field must be applied, and this threshold depends on coercivity of the respective material. "Hard" materials have high coercivity, whereas "soft" materials have low coercivity.
Jac Londe

Scientists capture first direct images of theoretically predicted magnetic monopoles - 19 views

  • first direct images of
  • magnetic monopoles
  • Image representing 12 micrometer x 12 micrometer of artificial magnetic metamaterial where monopoles can be seen at each end of the Dirac strings, visible as dark lines. The dark regions correspond to magnetic islands where the magnetization is reversed. (Image courtesy of Paul Scherrer Institute)
  • ...3 more annotations...
  • “Some of the most important theories explaining how quantum matter behaves in the universe are based on their existence, but they have eluded direct imaging since they were first theoretically conceived in the 1930s.”
  • “A magnetic monopole is a ‘hypothetical’ particle that is a magnet with only one single magnetic pole,” says UCD Theoretical Physicist, Professor Hans-Benjamin Braun from the UCD School of Physics, who co-led the study with Dr Laura Heyderman from the Paul Scherrer Institute in Switzerland.
  • Initially conceived by the British-Swiss theoretical physicist Dirac in 1931, monopoles were proposed to occur as emergent quasiparticles in so called pyrochlore spin-ice systems by Castelnovo, Moessner and Sondhi in 2008.
Christine Schlitt

Lesson Plans: Name & Word Wall Activities, Building Blocks (Kindergarten, Building Blocks) - 32 views

  • Word Walls and The Name Game Each day we have one person who is our helper and we focus onher name. When everyone has had a turn, we start another round.I find it easiest to go in alphabetical order by first names. I write the students names on sentence strips, using one colorfor boys, and another for girls.First round: We reveal one name each day, beginning with a cheer:?Gimme a B (B), Gimme an i (i), Gimme an l (l), Gimme another l(l), Gimme a y (y). What?s that spell? (Billy). One more time!(Billy). Then I ask if anyone ?notices? anything about Billy?s name andwe look for letters in common with other names, or count lettersand look for other names with the same number of letters. Thenwe take a good look at the student, discussing colors ofclothing, so each child can draw a picture of the helper. Iwrite the helper?s name on the board and encourage everyone totry to write that person?s name and then draw a picture of thehelper. The helper gets to take home the pictures drawn byothers, his is put up on the bulletin board with the name cardI?ve made. 2nd Round: The self-portraits are put into a class book and thename cards are transferred to an alphabet word wall. Each day weread the alphabet and names, then take the helper?s name off tocheer and ?notice? letters about this name and others. We formthe helper?s name in magnetic letters, scramble them up and taketurns putting them in the right order. 3rd Round: When we read the alphabet, we say the sounds inaddition to the letters and names. This time we cheer, writethe letters in the helper?s name on the board and then count howmany of those letters are in the names on the word wall. Thenwe talk about which letter has the most, least, etc. We havealso added another name cheer: ?Bryan, Bryan, that?s his name.It starts with B, it ends with n, hooray, Bryan! We stillscramble the name with magnetic letters. At some point we begin to add sight words to the names on thewall, usually starting with go and we. In December, or after wecome back from Christmas, we take the names off the word walland put them in a pocket chart for the kids to use duringcenters. We continue to add sight words the rest of the year,reading the alphabet, and saying the sounds and words each day. Here are additional name ideas; some I?ve tried, some I haven?t.*Count the syllables.*Write the names like a rainbow.*Name poems from the website Korky?s Kool rhyme machine (http://www.literacyhour.co.uk/learning_activities/rhyme/rhyme.html)*Think of words that begin the same as the name.*Make up tongue twisters.*Fill out an interview sheet.*Mystery person (hangman type game where you draw blanks for theletters and the kids guess letters until they know the name.* Use the letters in the name and look for smaller words. *Cut up name puzzles to keep in a literacy center.*Change the initial consonant and play with the word (Sue, Bue,Lue, etc.).*Another name cheer: No matter what I do or say,My name will always be the same,It starts with_____It ends with ____Now count to 3 and say my name,1,2,3,_______.
    • Christine Schlitt
       
      Name Game Ideas for Kindergarten
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    "Word Walls and The Name Game Each day we have one person who is our helper and we focus on her name. When everyone has had a turn, we start another round. I find it easiest to go in alphabetical order by first names. I write the students names on sentence strips, using one color for boys, and another for girls. First round: We reveal one name each day, beginning with a cheer: ?Gimme a B (B), Gimme an i (i), Gimme an l (l), Gimme another l (l), Gimme a y (y). What?s that spell? (Billy). One more time! (Billy). Then I ask if anyone ?notices? anything about Billy?s name and we look for letters in common with other names, or count letters and look for other names with the same number of letters. Then we take a good look at the student, discussing colors of clothing, so each child can draw a picture of the helper. I write the helper?s name on the board and encourage everyone to try to write that person?s name and then draw a picture of the helper. The helper gets to take home the pictures drawn by others, his is put up on the bulletin board with the name card I?ve made. 2nd Round: The self-portraits are put into a class book and the name cards are transferred to an alphabet word wall. Each day we read the alphabet and names, then take the helper?s name off to cheer and ?notice? letters about this name and others. We form the helper?s name in magnetic letters, scramble them up and take turns putting them in the right order. 3rd Round: When we read the alphabet, we say the sounds in addition to the letters and names. This time we cheer, write the letters in the helper?s name on the board and then count how many of those letters are in the names on the word wall. Then we talk about which letter has the most, least, etc. We"
S Berrend

Magnets: Where Physics Meets High Fashion - 75 views

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    Fun jumping off place for combining worlds via a discussion of magnetic fingernail polish. Students could test and explore ways to get different patterns to develop in the polish.
Martin Burrett

http://www.playsuperme.com/static/content/games/5.swf - 27 views

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    A great flash game where players must shoot a ball into a hole and use the magnets to help you. There is lots of science to learn in this game including about magnets, gravity and the orbits of space objects. http://ictmagic.wikispaces.com/Science
Mary Beth  Messner

Triptico | Word Magnets - 49 views

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    Magnetic Poetry online - after the site loads, wait for the "Next" button to appear in the bottom right corner. You can enter the words you want to use for the poetry and choose different backgrounds/grids, including Venn diagram.
Adrienne Michetti

Play Magnetic Poetry Online - 5 views

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    Remember the magnetic poetry that's on your fridge or file cabinet? now you can play with it online, too~
Lara Kessler

What is Electricity? - 2 views

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    A cool site about how electricity works. It includes discussion of electricity and magnets, static electricity, and circuits.
Louise Maine

Teacher Training Videos created by Russell Stannard - 101 views

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    " * About Russell Stannard * ELT/ESL Videos * Web 2.0/ICT Videos * Russell's Research Videos * 9 Great Spelling Sites for ELT * Free on-line screen capture tool * Zimmer Twins-Brilliant Cartoon/Dialogue Tool for Kids * Word Magnets-Great vocabulary/Grammar Tool * How to use Survey Monkey * My favourite Website on the Web * 5 Simple but brilliant ELT tools * Great Text Tool called WordSift * Wolfram Alpha Great Question Making Tool * Fun Viral Marketing Tools * Amazing 3D dialogue builder * 2 amazing presentation tools * Best Pronunciation Sites * Best ELT sites 2008 * Great dictation site * Wordle-Great Vocab Site * My favourite Listening Site * 10 vocab sites for kids * ELT Videos with subtitles * Brilliant Comic Site * 7 Great Fun sites for ELT * Unusual Vocabulary Site * Really Fun Dialogue Building Tool * A site for drawing&Recording * 11 great sites for teaching English * Recording & Searching Podcasts with Podamatic * Good sites for ELT Video content * Review of the best ELT podcasts * Voicethread- Presentation tool * Fun drawing tool Humanising Language Teaching The Blogs I use most for ELT * Larry Ferlazzo's blog * Nik Peachey's blog * Blog at IH Barcelona * Ozge's Blog * Carl's Blog Newsletter For extra free materials and training videos, sign up to our monthly newsletter! Email Address: Confirm Email Address: Name: Organisation/Institution: "
Trevor Cunningham

Triptico - 74 views

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    Tons of great interactives and generators here... well-suited for the interactive whiteboard
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    Triptico apps and games for learing and education
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    Fantastic set of computer-based language resources...the word magnets tool alone is worth the 30-seconds it takes to download and install! Spice up your SMARTBoard interactions as well.
Margaret Moore-Taylor

Welcome to NoRedInk! - 107 views

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    This app was developed by a teacher in Chicago at Whitney Young Magnet School. NoRedInk.com is a web-based learning platform that helps students improve their grammar and writing skills.
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    Created by someone in chicago
anorred79

Speaker Lab - 29 views

  • A speaker is a device that converts an electronic signal into sound. The speaker you will build (see figure 1) consists of a Styrofoam or paper cup, a coil of wire, a permanent magnet, and a signal source. The electronic signal goes through the coil and creates a varying electromagnet. The attraction and repulsion between the electromagnet and the permanent magnet cause the cup to vibrate and produce sound.
    • anorred79
       
      Student should work in groups of 2 to 3.
Jac Londe

Physicists uncover novel phase of matter - 22 views

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    A team of physicists led by Caltech's David Hsieh has discovered an unusual form of matter-not a conventional metal, insulator, or magnet, for example, but something entirely different. This phase, characterized by an unusual ordering of electrons, offers possibilities for new electronic device functionalities and could hold the solution to a long-standing mystery in condensed matter physics having to do with high-temperature superconductivity-the ability for some materials to conduct electricity without resistance, even at "high" temperatures approaching -100 degrees Celsius.
Christina Wilson

Molecular Expressions: Science, Optics and You - Secret Worlds: The Universe Within - Interactive Java Tutorial - 27 views

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    St with the universe and get closer until you get to the subatomic level Great so use in a variety of grades.
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