Recent Changes

Wednesday, September 14

  1. page Squeeze bottle edited ... Figure 26: a pen barrel pushed into two #3 rubber stoppers. Procedure – Fill one of the 1-lit…
    ...
    Figure 26: a pen barrel pushed into two #3 rubber stoppers.
    Procedure – Fill one of the 1-liter bottles with water until it is about ¾ of the way full. Attach the stopper-barrel-stopper connecting device created in the Getting Ready section to the 1-liter bottle. Put the empty 1-liter bottle on top and carefully turn the contraption upside down so that you have a 1-liter bottle with air-connecting device-1liter bottle with water configuration. Initially no water or very little water will fall from the top 1-liter to the bottom 1-liter. Ask students what is holding the water up. Squeezing the bottom bottle with air will cause a larger displacement of water from the top bottle to the bottom one, causing bubbles to form at the bottom of the water which float to the top of the upper 1-liter bottle. Ask students why this happens.
    ...
    to another .object. Gravity is
    {figure27.jpg}
    Figure 27: On the left no water (or very little) gets transferred from the top to the bottom. On the right, squeezing the bottom bottle forces air up to the top and subsequently water squirts down to the bottom.
    (view changes)
    4:22 pm

Tuesday, August 26

  1. page home edited ... Teaching Science with Toys Eric Himburg Cary Academy Middle School, Cary, NC Table of Con…
    ...
    Teaching Science with Toys
    Eric Himburg
    Cary Academy Middle School, Cary, NC
    Table of Contents
    About the lesson plans presented
    (view changes)
    5:00 pm

Wednesday, December 4

  1. page space.menu edited ... Online Resources Toy Activities Toy Bomb Bag Fortunate Fish Edible Candle ... Fantasti…
    ...
    Online Resources
    Toy Activities
    Toy Bomb Bag
    Fortunate Fish
    Edible Candle
    ...
    Fantastic Flying Flarble
    Tippe Top
    Toy Bomb Bag
    Household Item Activities
    Balloon in a Bottle
    (view changes)
    9:37 am
  2. 9:37 am
  3. page home edited ... About the lesson plans presented Lessons with toys Toy Bomb Bag Fortunate Fish Edible ca…
    ...
    About the lesson plans presented
    Lessons with toys
    Toy Bomb Bag
    Fortunate Fish
    Edible candle
    ...
    Fantastic Flying Flarble
    Tippe Top
    Toy Bomb Bag
    Lessons with household items
    Learning with liter bottles
    (view changes)
    9:36 am

Monday, September 30

  1. page Online resources edited ... Target (hand warmers – do a search on this site) http://www.target.com/ Edible Candle Back…
    ...
    Target (hand warmers – do a search on this site)
    http://www.target.com/
    Edible Candle
    Background Research
    Biology4Kids.com (reasoning in science)
    http://www.biology4kids.com/files/studies_scimethod.html
    Southwest Farm Press (article about peanut biodiesel)
    http://southwestfarmpress.com/peanut-biodiesel-could-save-farmers-millions-fuel-cost
    Purchasing Materials
    Wal-mart (do a search for apple corer)
    http://www.walmart.com/

    Magic Sand
    Background Research
    Steve Spangler Science
    http://www.stevespanglerscience.com/experiment/magic-hydrophobic-sandhttp://www.stevespanglerscience.com/lab/experiments/magic-hydrophobic-sand
    Wikispaces - Research the Topic Part 1
    http://researchthetopic.wikispaces.com/The+difference+between+hydrophobic+and+hydrophilic+Part+1
    ...
    http://researchthetopic.wikispaces.com/The+difference+between+hydrophobic+and+hydrophilic+Part+2
    Purchasing Materials
    Educational Innovations
    http://www.teachersource.com/product/magic-sand/chemistry

    Steve Spangler Science
    http://www.stevespanglerscience.com/product/magic-sand
    ...
    Purchasing Materials
    DH Gate (mood rings)
    http://www.dhgate.com/wholesale/mood+rings.html H
    Science Kit and Boreal Laboratories (blocks for Extension 1)
    http://sciencekit.com/density-blocks-i-constant-volume-teacher-developed-classroom-tested/p/IG0029437/
    ...
    Botanical Balloons
    Background Research
    Questacon (activity and explanation of how it works)
    http://sciencesquad.questacon.edu.au/activities/scented_balloons.html
    NSF Activity (PDF File)
    http://www.nisenet.org/sites/default/files/catalog/uploads/9881/diy_nano_balloons_07_28.pdf

    How Stuff Works
    http://science.howstuffworks.com/environmental/life/human-biology/smell.htm
    ...
    xUmp
    http://www.xump.com/science/UFOBall.cfm
    Push ‘n GoFantastic Flying Flarble
    Background Research
    Physics4Kids.com
    http://www.physics4kids.com/files/motion_energy.html
    How
    How Stuff Works (gears)
    http://science.howstuffworks.com/transport/engines-equipment/gear.htm
    The Physics Classroom (vibrations
    (helicopters - forces)
    http://science.howstuffworks.com/transport/flight/modern/helicopter6.htm
    How Things Fly (Smithsonian National Air
    and springs)
    http://www.physicsclassroom.com/class/waves/u10l0a.cfm
    Space Museum)
    http://howthingsfly.si.edu/forces-flight

    Purchasing Materials
    Kazoo Toys
    http://www.kazootoys.com/push-go-vehicle.html
    Toys ‘R Us
    http://www.toysrus.com/product/index.jsp?productId=4073719&prodFindSrc=prodCrossSell
    Home Science Tools
    http://www.hometrainingtools.com/masses-weights/c/95/
    Flarble
    http://www.flarble.com/
    Educational Innovations
    http://www.teachersource.com/product/snapcopters/air-pressure

    Disappearing Ink
    Background Research
    ...
    About.com Chemistry (acid-base indicators)
    http://chemistry.about.com/od/acidsbases/a/Acid-Base-Indicators.htm
    ...
    (activity plus explanationexplanation)
    http://www.stevespanglerscience.com/experiment/vanishing-ink
    Purchasing Materials
    Sears (individual units of disappearing ink or cases of 96)
    http://www.sears.com/shc/s/search_10153_12605?keyword=disappearing%20ink

    Oriental Trading (disappearing ink in packs of 24)
    http://www.orientaltrading.com/api/search?Ntt=disappearing+ink
    Sears (individual units of disappearing ink or cases of 96)
    http://www.sears.com/shc/s/search_10153_12605?keyword=disappearing%20ink

    Glow Sticks
    Background Research
    ...
    Steve Spangler Science (Balloon in a Bottle)
    http://www.stevespanglerscience.com/experiment/balloon-in-bottle
    Terrific Science (Burp Bottle ActivityHow Stuff Works (how air can hold things upsimilarrelating to Squeeze Bottle)
    http://www.terrificscience.org/lessonpdfs/BurpBottle.pdf

    http://science.howstuffworks.com/transport/flight/modern/hot-air-balloon6.htm

    Steve Spangler Science (Tornado Tubes – experiment and how it works)
    http://www.stevespanglerscience.com/experiment/tornado-in-a-bottle
    ...
    University of Colorado at Boulder (Interactive density simulation)
    http://phet.colorado.edu/en/simulation/density
    Exploding Straw
    Background Information
    WikiHow
    http://www.wikihow.com/Pop-a-Drinking-Straw
    Wikipedia (Drinking Straw)
    http://en.wikipedia.org/wiki/Drinking_straw#Types_of_drinking_straws

    Magic Eraser
    Background Information
    ...
    BenFranklin.com
    http://www.benfranklin.com/search.php?c=&t=magic+relight+candles
    Floating Tea BagsCoins
    Background Research
    How Products are Made
    http://www.madehow.com/Volume-2/Tea-bag.html#b
    Brain Pop Jr
    http://www.brainpopjr.com/science/forces/sinkorfloat/grownups.weml

    Mr. Rogers’ Neighborhood
    http://pbskids.org/rogers/sink.html
    Purchasing Materials
    Walmart (100 tea bags)
    http://www.walmart.com/ip/Lipton-Regular-Tea-Bags-100ct/15686427
    Educational Innovations
    http://www.teachersource.com/product/floating-yen-coins/density

    Thumb War
    Background Research
    (view changes)
    1:56 pm
  2. page Thumb war edited ... win or lose gracefully 2. Each student should make a hypothesis about whether they believe th…
    ...
    win or lose gracefully
    2. Each student should make a hypothesis about whether they believe the length of a student’s thumb will help their chances of winning. Will the student with the longest thumb win more often? Will the student with the shortest thumb win more often? Is thumb length not a factor when determining who will win or lose a thumb war? Explain the reasoning for your hypothesis.
    ...
    thumb nails).
    Note: the number of wins will be left blank until the next step.
    Group Member
    Thumb Length (cm)
    Number of wins
    ...
    table above.
    5. To get a better data sample and be able to draw better conclusions the experiment should be repeated. Have each member of the group have a thumb war with all other members of the group and add the wins to the table above.
    Analyze Data
    ...
    What other factors might influence who wins a thumb war?
    Explanation
    ...
    thumb war.
    *Adapted from the lesson plan “Teaching the Scientific Method through Thumb Wars” by Shraddha Subramaniam.
    Return to the Home page.

    (view changes)
    1:51 pm
  3. page Floating tea bags edited ... Make an inference to explain each tea bags behavior in the water. Explanation ... dissolve…
    ...
    Make an inference to explain each tea bags behavior in the water.
    Explanation
    ...
    dissolved components.
    Density

    Density
    can be
    ...
    than 1).
    An interesting phenomenon is discovered when a full tea bag and an empty tea bag are placed in water. The full tea bag will float while the empty tea bag sinks. Since mass was removed from the tea bag one would expect it’s density to lower and for it to continue to float (or float even better). The difference between the tea bags has to do with the normal tea bag’s ability to inflate itself, significantly increasing its volume and hence lowering its density enough to float. The normal tea bag does this through a process called nucleation – air in the water naturally attaches itself to the ground up leaves in the tea. Once a few bubbles form on a leaf more and more air in the water attaches itself to the bubble and the air bubble becomes large enough that it actually stuck inside the bag. The tea bag that is empty does not have any particles for the air in the water to nucleate on and hence no air bubbles form inside the bag. Additionally, the density of the bag’s material is slightly denser than water and hence the empty bag will eventually sink to the bottom.
    {figure43.jpg}
    Figure 43: The empty tea bag (left) sinks in water. The normal tea bag (right) floats in water.
    Return to the Home page.

    (view changes)
    1:50 pm
  4. page Trick candles edited ... Magic re-light candle, modeling clay, small aluminum pie plate, ruler, matches, safety goggles…
    ...
    Magic re-light candle, modeling clay, small aluminum pie plate, ruler, matches, safety goggles, highlighter
    Getting Ready
    ...
    lab group.
    {figure41.jpg}
    Figure 41: Re-light candle in a simple candle holder
    ...
    b) Wax and ice also have a lot of properties in common. For example, they both are solids. What other properties do wax and ice share?
    Explanation
    ...
    without assistance.
    A trick candle or re-light candle is different from a normal candle in that they put magnesium inside of the twine of the wick. When the flames come in contact with the magnesium there is a white flash of light and a spark. Look for the white sparks generated by a trick candle when it is burning. When a trick candle is blown out the heat released from the burning magnesium is great enough to re-ignite the fuel in the candle. A red-hot wick and exposure to the oxygen in the air is enough to burn the magnesium which in turn is enough to generate a flame once again.
    ...
    does not.
    {figure42.jpg}
    Figure 42: a magic re-light candle smokes and sparks before it catches fire again.
    Return to the Home page.

    (view changes)
    1:50 pm

More