Sodium-Element Presentation

11/21/2012

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Don't Stop Winding

11/21/2012

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  By: Angeleah George

Pictures are  put in the g6 homework box.


A few classes ago we flew Whooshers. When I told my parents this, they asked, “ what is a Whoosher”. A Whoosher is a small, simple machine that hangs on a string and and shoots forward when its propeller spins.

I could not wait for the day of the flight. I knew it was going to be exciting to watch all the whooshers fly. In preparation for this amazing flight we first had to build the Whoosher. We were given 3 popsicle sticks, 3 rubber bands, 2 paper clips, a straw, a propeller, 25 cm of duct tape and a pair of scissors. Afterwards we put the data that we had collected during the flight into a chart (shown below as image 1). If in the next class we were going to be making Whooshers, my partner, Francesco and I would have done a better job. The difference between building the whoosher now from before is that we now have experience and have more knowledge than when we did when building the first whooser. This project was fun and educational.



Problem Question


I thought about this question for a while. At the time this seemed very easy, but when we got to it, it was harder than I thought .

Can we make a working Whoosher using 3 popsicle sticks, 25 cm of tape, 3 rubber bands, 2 paper clips, a straw, and a propeller?

Background Research


We didn’t do much research in this project, we focused more on the big flight itself.

Before we made or flew our Whooshers we saw other students making and flying theirs. Some failed and some succeeded  and we were able to see why.

Hypothesis

If the Whoosher was built straight then it will go very fast because  the whoosher’s power that is pushing it forward will have less turn to accommodate.


Procedure

Pictures for further explanations can be found in the grade 6 , red, homework box.


  1. Collect your materials by getting 3 popsicle sticks, 25 cm of tape, 3 rubber bands, 2 paper clips, a straw, and a propeller.
  2. Tape the end of one of the popsicle sticks to the end  of another one to form a right angle.
  3. Take the last popsicle stick and tape it on the end of one of the other popsicle sticks. Make sure you leave space at the bottom of  the popsicle stick you are taping the last popsicle stick to.
  4. Take the straw and tape it on the last two ends of the popsicle sticks to make a square.
  5. Put the space from the popsicle sticks you saved on #3 and slip it into the shaft on the propeller.
  6. Push the top of the the propeller down so the wire under it  shaped like a hook is open.
  7. Take all three rubber bands and pop them in the hook shaped wire on the propeller.
  8. Take one of the paper clips and bend it as shown in the  pictures and tape the end shaped like a long u on the popsicle stick at the bottom facing the propeller.
  9. Take the other end of the rubber bands that was connected to the propeller in #7 and pull it so it streches  into the bent wire  in #8
  10. Hang up  a string from one side of the room to the other.  Tying the last end of the string to the wall put it through the straw on your Whoosher.
Data

Points

Time (S)

Distance (M)

0

0

0

1

1

1.352

2

2

2.21

3

3

2.719




Analysis

The Whoosher we built had a little turn, but not enough to slow down or stop our Whoosher. So our Whoosher was successful.

Conclusion

The Whoosher we built was successful because it  flew quickly ,because was not bent and so had no turn. So we confirmed our hypothesis.


Evaluation

This experiment was beneficial because we learnt about how  movement works. The relationship between the propeller and the amount of times the rubber band is  wound up is important when flying a Whoosher . This process of learning was a great way to teach us about movement.         


                                                                                                                                                                                                                                                                      
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Paper Tower Competition

11/21/2012

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Tipple, Topple, Uh Oh!

By: Angeleah George

A few classes ago we had a paper tower competition. In this competition we had to try to build the tallest and sturdiest tower. We were given only 2 sheets of paper, 50 cm of tape and a pair of scissors. Afterwards we studied how the materials we had worked, bent and what they could do. In the next class we will be making towers for the second time. The difference between building the towers now from before is that we now have experience and have more knowledge than when we were building the first one. We will build these towers with different partners than before. We had to approximate how tall a tower we can make and try to make it the same height. My partner Stefano and I said we could build a 70 cm tower. With my partner Liam in the competition we were able to build a 68 cm tower. WE WON THE COMPETITION!!! And this time I hope we get dead on for a 70 cm tall tower.



Problem Question:
  1.         Can we make a tower using two sheets of paper, a pair of scissors and 50 cm of tape?

    1. Can we make a tower 70 cm tall?






Background Research:
Balance is needed to keep the tower standing upright. Shape can make your tower taller. A strong base is needed for a sturdy tower.


Hypothesis:
If the tower has good balance then it will stand upright because there will  be the same amount of weight on both sides of the tower.


Procedure:
  1. Collect your materials by getting two sheets of paper, a pair of scissors and 50 cm of tape.
  2. Fold one of the papers lengthwise in three then unfold it and cut on the lines you made.
  3. Roll the three strips lengthwise into tubes and place a small piece of tape on each  to keep it together.
  4. Take the end of the first tube and slide it into one end of the second tube. Take the third tube and slide the end into the other end of  the first tube. Tape where the tubes join.
  5. In your mind imagine three lines down the last piece of paper  widthwise the same distance away from each other. Do not fold it to make these lines!
  6. Cut the paper on one of the lines. On this piece cut half a circle out  and roll it so it makes a cone shape.
  7. Get one end of the long roll (from steps 2 through 4) and fit it in the top of the cone shaped piece then tape the cone together.
  8. Roll the rest of the paper widthwise with the top a bit smaller than the bottom. Tape it.
  9. Place the base on top of this purposely uneven roll to make it taller.
   10. Use the rest of the tape to stick the base to its extension.



Data: https://docs.google.com/a/cedarschoolbvi.com/document/d/1BxERBdOk3wB8awnQhzA97Wq3K7thNDX6L0QdrJVHqyA/edit

















Analysis:
The height of the tower we built  was 83 cm  which was 13 cm taller than the objective tower height of 70 cm or more.


Conclusion

The tower we built was successful because it was more than 70 cm and it had good balance. So we confirmed our hypothesis.  


Evaluation

This experiment was beneficial because we learnt about how balance works. The relationship between the base and the height was important to make the tower stay standing upright. This process of learning was a great way to teach us about balance.



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