Stuff

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Stuff



These are a collection of -What did you Learn?- assignments, created
by Latham Piper, for his sixth grade science lessons.



  • A Cell Divides
  • Baby Fuzzy
  • Baby Tumble
  • Bones
  • Build
  • Contract and Relax
  • Dental Work
  • My Body
  • Fat!
  • Fusing
  • Genes
  • Hair
  • Hard to Tell the Difference
  • Healing Cells
  • It’s Growing!
  • Line the Bone Up
  • Muscles
  • New Bone, Old Bone
  • Red Meat, White Meat
  • Shedding Shell
  • Skin
  • Starting Off

  • The Egg Changes
  • Top Heavy
  • Ugly Baby Stage
  • Zits AAAAAAAAHH!!

  • A CELL DIVIDES


    What I learned out of this chapter is that the egg after it has
    been fertilized it divides 16 times into a solid ball of cells.
    After this has happened some of the cells that were on the ball
    of cells depart and that leaves a capsule for the Embryo to grow
    in. I also learned that as soon as the fertilized egg becomes
    a capsule it sends off Hormone chemicals that tell the Womb lining
    to stay in place. I also learned that the capsule digs into the
    Womb lining and at this time the capsule is about the size of
    a pin head.

    BABY FUZZY.


    What I learned from this chapter is that at 20 weeks old the
    baby will have finger nails and toe nails, the baby will also
    have finger prints. Its skin will be covered in a fine down and
    it has eye brows. By 26 weeks the baby’s eyes are starting to
    open and its eye lids have lashes. By 28 weeks the baby’s head
    will have hair. By 36 weeks old the baby is getting plump and
    it is making a brownish fat that acts like heating pads. I also
    learned that if you spray a lemon scented spray in to a pregnant
    mother rat its baby’s won’t feed from there mothers nipples unless
    they are lemon scented too. I also learned that a baby recognizes
    the smell of her mother’s milk by a week after birth.

    BABY TUMBLE


    What I learned from this chapter is that the Fetus nearly doubles
    in size at the beginning of the 9th week to the end of the twelfth
    week. I also learned that if the baby kicks inside its mother
    it goes tumbling and when it is inside its oxygenated water balloon
    the Fetus won’t even feel a bump. I also learned that most of
    the movements that a Fetus does seem to be for practice only.




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    BONES


    What I learned from this chapter is that a Ligament is a cell
    that holds bones together. I also learned that a muscle is a large
    group of muscle "fibers" that are just encased in a cocoon.

    BUILD


    What I learned from this chapter is that if you pull the tendon
    on the leg of a dead turkey the claws will close together and
    that is what a leg would do on a live turkey. That is also how
    a bird holds on to a perch. I also learned that cells inside bones
    are called Osteoclasts "bone destroyers" and Osteoblastes "bone
    makers." What happens is a Osteoclasts get into the bone and eat
    away and then the Osteoblasts come and build more bone. When this
    happens doctors call it ossified bone. A X-ray can show an ossified
    bone.

    CONTRACT AND RELAX


    What I learned from this chapter is that a catapillar moves by
    contracting and relaxing its muscles. I also learned that a muscle
    needs a skeleton or a bone to work. I also learned that a hydra
    moves by doing a somersault over and over again.

    DENTAL WORK


    What I learned from this chapter if that bone builders try to
    space teeth evenly and if a baby loses a tooth before it had replacements
    in its mouth the bone builder will rearrange the teeth and that
    would leave gaps in between teeth.



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    MY BODY


    What I learned from this chapter is that all the nucleus in my
    body have twenty- three pairs of Chromosomes and that all the
    chromosomes get pulled apart by pairs of cylinders and make two
    new nuclei in the mother cell. The mother cell divides making
    two new cells which are called the daughters. While the chromosomes
    are being pulled apart they look like sewing string being pulled
    apart in the middle and material that is floating around in the
    cells fluids is to make other chromosomes. I also learned that
    the egg that I grew in was one out of 300 to 400; and that the
    sperm that fertilized it was one out of hundreds of millions.
    Another thing that I learned is that the mother cell makes preparations
    to separate, like growing extra "membranes" so that it won’t burst
    when it squeezes in two. I also learned that I share half of my
    father’s genes and half of my mothers. Another thing that I learned
    is that my body starts copying my chromosomes before they ever
    started dividing and that the first time that a cell divided in
    me was just a few hours after the egg that I was, was fertilized.

    FAT!


    What I learned from this chapter is that a woman is born with
    more fat cells than boys. The reason is that they use more fat
    in their life than a man – from making room for a baby and putting
    more calcium in their bones. I also learned that if a fat cell
    wasn’t heeled together by so many collagen strands they would
    just roll around in my body.

    FUSING


    What I learned from this chapter is that a baby is born with 350
    bones but a hundred forty-four of the bones fuse to give the adult
    number 206. I also learned that this number isn’t always accurate
    because some times the person might have an extra rib. Another
    thing I learned is that the skull of a baby takes a while for
    the plates to fuse and parents get worried when their baby looks
    deformed.



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    GENES


    What I learned out of this chapter is that by the time an embryo
    is nine weeks old ‘a fetus’ it can fit comfortably inside a peanut
    shell. I also learned that the male and female genitals look and
    start out exactly the same and you can not tell them apart until
    it is at least a fetus. The way that the egg knows what kind of
    genital to produce is by what the sperm that fertilized has on
    board. If the sperm brought a chromosome that is an "x" gene then
    both egg and sperm genes are x then it is female but if it is
    a "y" gene then it is a boy. The way that the genes work to tell
    the egg what to produce is if the gene is a y gene then it like
    turns on a switch and it will produce a boy or if it is an x,
    then it will not.

    HAIR


    What I learned out of this chapter is that hair of some 7000
    years old is still just as strong as a healthy hair that is alive
    or growing now. Another thing that I learned is that a healthy
    hair can stretch 11/2 it’s regular size and stretch back. I also
    learned that a strand of hair is stronger or just as strong as
    a steel cable the same diameter.

    HARD TO TELL THE DIFFERENCE


    What I learned from this chapter is that after 9 weeks the embryo
    can be called a Fetus and it’s stubs that were its arms have grown
    identifiable into hands and feet and have toes and fingers but
    they are still held together by little webs that when the baby
    grows they will be stubby, and I have them. I also learned that
    a bat, donkey, whale and human embryos all look the same at six
    weeks old. After 5 weeks and starting on the six the embryos uncovered
    eyes point sideways and the rest of the face you can hardly see
    under the bulging brain. I also learned that every animal makes
    two sets of kidneys before finishing their final pair.



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    HEALING CELLS


    What I learned out of this chapter is that a mast cell causes
    itching by putting out a chemical and if you put the itch under
    the hottest water you can stand it will make the Mast cell put
    out all its chemicals that it has and it will take it hours to
    make more chemicals and during those hours the itch wont itch
    a bit. I also learned that if take a Fibroblast from one cut to
    another one that it will do just as good a job on the one that
    you put it on that it did on the cut that it was on, when a fibroblast
    goes to a twisted ankle or wrist it changes its shape entirely
    to make cartilage that will hold the wound together.

    IT”S GROWING!


    What I learned from this chapter is that at 20 weeks old the
    baby has toe nails and finger nail and also has finger and toe
    prints, its skin is covered with a fine down and it has eye brows.
    By 26 weeks its eyes are starting to open and its eye lids have
    eye lashes. By 28 weeks the head will have hair. By 36 weeks the
    Fetus is getting plump and it makes pads of brownish fat that
    act like heating pads. I also learned that if you inject a lemon
    scented odor into a pregnant rat’s belly, that the mice won’t
    suck on the nipples unless they are lemon scented too and that
    a baby recognizes it’s mother’s milk by smell a week after birth.

    LINE THE BONE UP


    What I learned from this chapter is why a doctor puts a cast
    on a serious break in a bone. A doctor puts a cast on a serious
    bone break because chondroblasts fill in the broken part of the
    bone to make it whole again but it doesn’t always heal the bone
    strait; so a doctor puts a cast on the break to get the bones
    relined. I also learned that the human jaw and teeth have been
    shrinking through out the years of evolution and that the human
    of this time has the smallest jaw of our species.



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    MUSCLES


    What I learned from this chapter is that muscles don’t grow by
    adding muscle fibers to the muscle. They grow by expanding and
    enlarging the muscle fibers they all ready had. I also learned
    that if an athlete took a drug like steroids, it gives that athlete
    a high chance of becoming balled or stunting their growth for
    ever.

    NEW BONE,OLD BONE


    What I learned from this chapter is that there isn’t a bone in
    me that is over a decade old. The reason that there isn’t a bone
    that is a decade old is because old bone is always being eaten
    away by Osteoclasts and then being rebuilt by Osteoblasts and
    this eventually makes a new bone. There is nothing wrong with
    the old bones. The reason that old bones are made over is because
    that is what our bodies are made to do.

    RED MEAT, WHITEMEAT


    What I learned from this chapter is that red meat is red because
    it is made for enduring a long time of, say, walking and so it
    needs allot of fat, oxygen, blood and oxygen. White meat is white
    because it has less blood going to it. I also learned that an
    adult pumps 1 1/2 gallons per minute.

    SHEDDING SHELL


    What I learned from this chapter is that an exoskeleton does
    not grow with the body that it encases. A crab, for example has
    to shed its exoskeleton to grow and then an exoskeleton has to
    regrow over the larger animal that the crab has become.



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    SKIN


    What I learned out of this chapter is that the cell responsible
    for the itch that you get from a mosquito bite is a mast cell.
    The mast cell’s name comes from the German word pig, the reason
    that we call the cell this is because it is a plump cell. There
    are also other cells that come to the scratch. Some of cells that
    come are a fibroblast, and a white cell. Each of the cells have
    its own job to do.

    STARTING OFF


    What I learned from this chapter is that every person begins as
    a single cell no bigger than a period and inside that cell there
    is a Nucleus and inside that Nucleus is a strand of information
    that is equal to 100,000 words which is about the size of a three-hundred
    page book. I also learned that scientists are only now starting
    to understand how that and when the information is stretched out
    end to end tied together it won’t even reach the end of my pinkie.

    THE EGG CHANGES


    What I learned from this chapter is that by the time that two
    weeks pass the capsule is about the size of a capital O. The hole
    where the Embryo dug into the lining has closed up behind it.
    The Embryo has hardly changed at all, although the capsule has
    become a pancake two cells thick. I also learned that over the
    next few days this complicated machine held by cords to the womb
    starts to act like a "space ship" taking food and putting its
    waste in its mother.



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    TOP HEAVY.


    What I learned from this chapter is that two weeks before birth
    the baby does one last somersault to prepare for birth. The reason
    that a baby is able to land head first when they do that somersault
    is because the baby is top heavy.

    UGLY BABY STAGE


    What I learned today from this chapter is that the Embryo goes
    through an "ugly stage," the beginning of this Ugly stage starts
    with a dent or grove in the Embryo that grows over the back tail
    and then to about the middle of the Embryo, there it forms a pit.
    I also learned that the bottom of this pit continues to grow into
    the Embryo and makes a solid rod. The rod is a place marker to
    show where the back bone, spinal cord, brain and ribs were to
    begin. I also learned that the embryo has to do so much twisting
    and turning that it gets caught up in its own amniotic sack.

    ZITS, AAAAAH!


    What learned from this chapter is that the way a body controls
    acne is by putting a sack around the germ so it won’t spread to
    other hair follicles.



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