Boys and Girls Ultimate: State Championships
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I was thinking about doing piano at first. Pretty sure I'm going to make either a xylophone or a twanger to make matters easier. Sound is produced with the xylophone by hitting on the keyboard of different sounds and pitches. The longer the rod the more mass it has where as to a shorter rod it'll have a more pitch sound.
2. Based on your understanding, how are you changing the pitch? What physical characteristics are important in this instrument?
It depends on the length and width of the rod to create the sound.
3. What materials will you actually be using for your instrument and why? How will you play your instrument? What is your plan for constructing the instrument?
I planned on using metal plates to use as the keyboard and a box to have a base for the plates. From my understandings, the length and width of the rod will have more of an effect in constructing the instrument I would like to play.
4. What outstanding questions do you still have?
Am I on the right path Ms. Awesome?
The instrument I chose was a xylophone. In order to produce sound you must hit the xylophone. The xylophone is a rectangular type of instrument with longer or shorter rectangles that produce higher and shorter notes. Those rectangles or hollow bars (depending on design) produce higher and lower pitched noises when you hit them.
When you hit the instrument the vibration through the material causes the sound waves to occur. If the bars are larger there needs to be more vibration, therefore causing a deeper sounds. So the size of the bars actually causes the pitch. For the instrument I am making I will most likely be using metal, copper, or PCP piping. I will play the instrument by hitting it with some type of bar that will actually cause sound. I will use nails and screws to make the instrument and as little tape as possible because tape muffles the sound and interferes with the sound waves.
--How is it played? What does the person have to do to produce sound?
The arm holds up the viola, and the person playing the viola is holding it steady by the chin. You would have to move the bow across the strings to produce sound.
--How do you change a note?
Each string itself has it’s own note so moving the bow across the strings. Then, depending on where you place your fingers on the string at the top, it changes the way the note sounds.
--How is it shaped?
It have a vase like shape.
--What does this make you think about how you can create and change sound?
Sound can be changed by adding pressure to a specific part.
Unlike many other mathematics classes that I have completed during my four years at SLA, Statistics with Ms. Thompson brings something different. A quadratic equation or second derivative isn't as apparent to a human in everyday life as statistics. With that, Ms. Thompson has always created a requirement for real life application in our benchmark projects. My favorite statistics benchmark of the year must have been our third quarter benchmark, which required the class to apply our knowledge of probability to the real world.
In order to accomplish this, Shanice Braxton (my partner) and I decided to find the probability of the Philadelphia Phillies winning the World Series. Before the MLB season started, there was a lot of talk on the Phillies being a favorable team to win the championship so we had to do the math. When dealing with probability, there are two types, theoretical and experimental. Because the Phillies were not actually playing, we had to choose theoretical probability and use past winnings and loses of the team’s franchise history. Therefore, to our surprise the Philadelphia Phillies only had approximately 1.5% of winning the World Series! Besides the mathematics, we represented our data graphically by creating a venn-diagram. Instead of creating a simple venn-diagram of two intersecting circles, we created a diagram of concentric circles (circles within circles) to show that winning the World Series is dependent of going to the World Series, while that is simultaneously dependant upon being in the playoff season to begin with. Other graphics were later added to contribute to our pamphlets design and presentation.
All in all, this project gave us incentive to inquire about probability and present those findings. It also gave us the ability to research and collaborate on applying statistical concepts to the real life situations. Although the theoretical probability of the Phillies winning the World Series is slim, anything can happen and we continue to cheer for them.
In my previous blogs I wanted to know about why people do this to the animals and the research that I just found gave me some reasons why they do this. Some act on sadistic desires, some act unintentionally, some harming pets with there carelessness. One of the main topics why is systemic the choices we make as a collective. People abuse children’s pets to coerce them into sexual abuse or to keep the children quiet about them the parent’s crudity to them. Also the children harm the animals because they want to take our there anger on another victim.
Ways you can help if you know this is happening or not, help the organizations retrieve the animals left behind. If you know someone who cannot take care of there pet find someone who can or call an animal association. If people have problems with animals try and help them through it, everything you do helps.
Pets are a big part of people lives did you know that a child in the U.S is more likely to have a pet then live stay at home father. Did you know that most American Homes have pets then children? Did you know every year 100 million animals die in experiments and tests? Did you know that 70% of the abusers also committed other crimes? The Internet is one of the biggest sources to find out facts about this topic. This still will be happening even if we are saving some. So if more people know then they can help to. This is my last blog post there was two more about animal cruelly, what I should do is continue my research and find out more because this an strong topic and not only is it with animals but also with children and it should stop now.
My favorite statistics benchmark was most definitely the first quarter benchmark. This benchmark was about calculating the consumer price index of various supermarkets all over Philadelphia. This was a group project, and my group members were Michael Kelly and Mary Altamuro. The stores we obtained all of our information from were Thrift Way N’ Shoppin’ Bag, Acme, and Pathmark. This project helped us by letting us use univariate and bivariate data. We were able to use mean, median, mode, Q1 and Q3 and range to calculate the difference in prices between the stores and figure out which store was the cheapest. This project is my favorite because I was able to do much more for my group than in any other project. I was able to go to the stores and check out the prices for the items we picked out and calculate the percentages and prove it using histograms and pie charts. This benchmark has also laid important groundwork for me to continue on in statistics. It taught me about all of the things I mentioned above, (Mean, median, mode, etc.). It also taught me the proper usage of histograms, stem-leaf plots, and box-whisker plots. Finally, I was able to learn some outside world experience from this. I learned that all stores are not the same. Sometimes prices differ because of the brands of food or just because of where it is sold. I noticed that the same items that were sold at Acme and Shop rite were considerably lower than the items sold at the Fresh Grocer. We connected this to the neighborhood the Fresh Grocer was in. Stores in wealthy neighborhood tend to have higher prices.
Research: I researched information on what consumer price index is and how it’s useful and effective for the costumer.
I collaborated with Mike Kelly, and Mary Altamuro,
: My group and I presented our work and on keynote and the presentation went well.
I worked very hard on this benchmark and I feel as though it was the most in compelling subject that we worked on.
When a xylophone it hits it vibrates and displaces the air molecules. There is a very transfer of energy as the xylophone switches from potential to kinetic energy. When sound waves collide they either bounce(reflect) or bend(refract). To change the pitch of a xylophone you change the size and density of the bars(keys).
I plan to make my xylophone out of copper or pvc pipe. Which ever produces the better sound and can be sustained. I will play my instrument like everyone else does with this type of instrument; a mallet.
2. The pitch of the instrument is changed by using an instrument with a different bowl shape/size that produces a frequency equivalent to the specific note.
3. The materials necessary to construct the instrument include numerous glass bowls, a spindle mechanism, and a small container of water. Playing the instrument involves changing my thumb from one bowl to the next. I plan to complete the instrument as soon as possible.
4. I currently have no additional questions.