Three Favorite Subjects

Intro
     My school is a private school.  We are a very small.  We do not have many classrooms so we use the library instead.  We use  it for typing\language arts and history.  We used to have an art class.  Math, sciences, and block topics are taught in the older kid classroom.  My three favorite subjects in school are art, history, and math.

Art
    Art is a subject that we don't do any more, but I still like it. The person who taught us is called Kelly Coyle.  We would get taught in the library, every Tuesday.  We had it for about an hour  twice a week. The 8th graders would go up to the class, then the next week the 6th and the 4th graders would get art.  Art was fun and there were no right or wrong answers.  I enjoyed that there was no homework for that class.  It was special.  I learned how to draw fast. then erase and add all the details and corrections later.   I also learned to draw the same thing in different ways.   I also learned how hard it is to draw with my left hand.  I miss art class.

History
    We get taught on Mondays and Wednesdays  for History.   The person who teaches us history is called Gail Crosby. History is about an hour and 45 minutes long.  On Mondays, the 6th and 4th graders go first.  Then the 8th graders go up first on Wednesday. Gail has been teaching us about Rome lately.  But so far we’ve learned about ancient Mesopotamia, Egypt, and Greece this year, too.  My favorite thing that I studied in history is Greece.  My favorite thing I learned about was a really old stone structure with no doors that they built in Mesopotamia.   I had fun building ancient structures out of legos.  I built a maze with a minotaur and the city of Olympia. I also like doing art with history.  Painting the Greek pottery for the Olympics that our class did was really fun.  I like knowing about history and learning about its puzzles.      

Math
    Math is my favorite subject.  Ben York, our main teacher, teaches us math. He teaches us math every day.  The main reason I like math is because it exercises my brain so much. It is a really important thing to learn that I know I will use a lot in the future.   Other people don’t like math, but I do.  I am the only kid in my class that likes math.

Conclusion

    At Salmon Creek School my favorite topics are art, history, and math.  Art is fun and easy.  I miss expressing myself in art class.  History is fascinating and good to know  Math is technical and interesting.  I enjoy all the classes at my school but these are the three that I like the mos.

Science Fair

     

I have speakers in my ipod, computer, headphones, telephone and our car.  They let us listen to music and other sounds.    The first speaker was made in1876 by Alexander Graham Bell.  He put it in his telephone that he invented.   They did not have much speaker quality in the past.  But now speakers are fantastic and have better quality sound.  Speaker quality is dependent on the size, shape, and materials they are built from.

SIZE:

Speakers come in many different sizes. Different sized speakers make different sounds.   A tweeter is a small speaker for high frequency sounds. A woofer loudspeaker is a large speaker for low frequency sounds. High sounds are very short sound waves, and low sounds are very long sound waves. If your speaker is too big, you can put a brick at the bottom to improve the sound quality.

SHAPE:

   
Speakers can come in many different shapes such as oval, square, rectangle, and flat panel.  The shape is important for the speaker quality, because the shape of the speaker can affect the sound.  An egg shaped box is the best speaker. Egg shaped boxes are hard to build.  Peaks and dips in sound are gotten rid of by rounding the cabinet.  Rounded walls make better speakers, because there is less distortion.  A square -shaped box is the worst speaker.  Sharp edges on the front of the speakers cause distortion.  A sealed box can give off more sounds than a flat panel.  If the wave length is longer than the flat panel, the panel speaker can not make that certain sound.  A rigid, air tight box makes a better speaker, because it can make any sound wave.  Thicker walls make better speakers, because there less distortion.

MATERIALS:


The materials for the speaker box and the inner stuffing are important for the speaker quality.  The
materials in the speaker that actually generate the sound do not change, but the speaker box and the stuffing materials can be changed.  The main parts of a speaker that generate sound are a copper wire, a paper cone, and a magnet.  They go together like this-- the magnet goes at the end of the cone, next put the copper wire at the wide part of the cone, then the  copper wire is pulled to the magnet.  This causes the cone to vibrate, and make sound.  The sound should only go in the direction where the cone is wide.  Like on a speaker you will see that the cone side is fabric and the others are enclosed in wood or plastic.   Good speakers are often made of wood because it vibrates less than plastic.  Plywood, and other composites are easier to make into speakers than making it out of boards because they can be shaped easier.   Speakers can be made out of metal, but it is expensive and heavy.  Concrete and stone would be good materials to build speaker boxes but its to hard to make the speakers.   


The materials inside the speaker are important for the speaker quality as well.  Damping is getting rid of an echo or distortion in a speaker. This is done by filling the speaker with stuffing, such as foam, wool, fabric, and more soft objects.  Get rid of echos and distortion makes good speaker quality.

CONCLUSION:
     The shape, size, and the materials all affect the speaker quality.  The best shape is a egg shaped
speaker.  The bigger the speaker the better.  And the best material to make your speaker from is plywood.  With these tips, you can get the best speaker ever.
        

Lost Lyrics

http://www.augustholland.com/Tahiti_Bound.jpg

Chorus:  The sea is blue.

The sea is green.

It's filled with treasures

Like you've never seen.

I'm the captain

Of the good ship Eagle.

She's carried me through adventures 

Legal and illegal. 

The waves are high.

The sails are full.

And we just entered 

The Bermuda Triangle.

Chorus

Now we are lost.

We don't know where

That mossy ship 

Came from over there.

The creaking sounds,

The rotten wood,

The torn sails, 

This don't look good.

Chorus

The wind is gone.

It's the end of May.

We've been here

Two months to the day.

The crew is mad

And they're starving.

They are very angry

At the captain.

Chorus

We are lost

And we might die.

We will never have 

Another slice of pie.

The biggest treasure

Is our homeland.

How we hope 

We get to see it again.