Wednesday, December 19, 2007
Late!!!!!! ahhhh.....
Thursday, December 6, 2007
Parabolas Everyday Part I
Parabolas in Everyday Life:
1. Stain glass windows in churches
2. The Sydney Opera House in Aussie
3. St. Louis Gateway Arch
Stain glass windows were commonly used to symbolize religious happenings in churches and cathedrals. The windows were decorative and informative and many times were donated by members of the congregation in memory of loved ones. These windows also help to monitor how much light is able to shine into the building. Not all stain glass windows are parabolic but those that are need more attention when being built. One incorrect measurement could cause the glass not to fit properly, or to fit but not sturdily and cause injury. I think this shape is used for more of a decorative aspect and is just more elaborate than the usual rectangular shaped window.
The Sydney Opera House was designed by Jorn Utzon and opened by Queen Elizabeth II on October, 20 1973. It conducts 3,000 events each year and has an annual audience of 2 million for its performances. It’s only been open since 1973 but is just as representative of Australia as the pyramids are to Egypt. This building wasn’t purposely built with parabolas in place. Utzon had entered an anonymous competition for an opera house to be built in Australia. Out of about 230 entries his concept was selected. He didn’t even complete the project himself because he left it in the hand of Peter Hall. He along with others completed the interior of the Opera house, but it was all coincidence that it’s shape contained parabolas.
The St. Louis Gateway Arch is the tallest national monument in the US (630 ft). It was completed on October 28, 1965. Each year, about a million visitors ride the trams to the top of the Arch. They’ve been in operation for over 30 years and carried over 25 million passengers. The arch is a catenary curve, meaning if a parabola were rolled along a straight line it would trace out a catenary. The word catenary derives from the latin word for chain. A flexible curve, supported at both ends, that hangs and is acted on by gravity is a catenary. This shape allows for the St. Louis Gateway Arch to be able to move up to 18 inches (wind at 150 mph). It is built to withstand any type of destructive storm.
Links to Pictures:
http://staytondailyphoto.com/photos/stained_glass_church2.jpg
http://www.underthesoutherncross.org/assets/images/australia-sydney-opera-house.jpg
http://www.orgsites.com/mo/stlchristianhomesports/StLouisArch.jpg
Tuesday, November 13, 2007
End of Quarter Self Reflection
- Assignments-I did all of the work required
- Classwork-I did most of the work required
- Homework-I did most of the work required
- Studying for quizzes-I didn't do much
- Studying for tests-I did most of the work required
- Reworking problems that you misunderstood-I did most of the work required
- Making up work & checking the eboard when absent-I did all of the work required
- I've done a good job of keeping track of what I need help in. A lot of times I come in for extra help after school to stay updated. Or, if I don't come in for help I ask a friend to explain something to me. Also, the work that I was missing, I made sure to get it completed and questions I didn't understand were explained to me.
- I could defnitely pay more attention during class to what is being explained. I could also make sure to at least do some of my homework instead of not doing any of it. My biggest problem is not studying enough for tests/quizzes. I come in for help but after that I don't do much studying and that's where my biggest downfall was this quarter.
Wednesday, October 24, 2007
Blog 5
So far, I think blogging is a good way for you (Ms. DiTullio) to keep track of all of your students. But sometimes they are easy to forget about and could be unecessary points deducted. For example, right now. I just remember this was due and quickly signed on.
We get plenty of worksheets and practice in class and for homework. The only thing I think would be more affective is taking more notes down in class to have as a referance when we get stuck on problems. Instead of asking for help we can look at our notes first than ask.
Sunday, October 7, 2007
Honestly, I am unsure of how to properly complete any problems without help. But if I had to choose 2 topics to help somebody else with they'd probably be probability & possibly combinations. They seem to be the things I'm most comprehensive in.
Monday, September 24, 2007
Post #3
Since you have 5 choices of your main dish and 5 choices of your side dishes, you multiply and get 25. You than multiply that by 4 (drinks) and you get 100 as your answer. (5x5x4=100)
2: 5! = 5xx4x3x2x1
Jill's basketball coach needs to choose a starting line up. The team has 15 players. How many line ups of 5 can be arranged?
3: How many combos of set {1,2,3,4,5,6,7} are there in groups of 4?
Answer: (7C4=35)