2010年11月19日 星期五

Case study 2: The American Dream

Artifact 1: The American Dream Travel Co.

Destination One: California
<---Panning for gold

The first place you are going to visit is California! Eye witness the California gold rush and you could probably find gold too! Also visit Sutter’s Mill and buy some supplies so you could dig for gold! We would stay here for nine days and head on to the next destination. Safety pretty much guaranteed unless you go dig for gold. On day eight, we would be traveling to Sacramento to travel on the transcontinental railroad to the next destination.
Cost: 1500


Destination Two: Missouri
<---Apotheosis of Saint Louis

Visit a kind of new state in Missouri, which is bought in the Louisiana Purchase. It is called the Gate Way to the West, because it is where Lewis and Clark started their expedition. You could also see the Gateway Arch in St. Louis. Here in Missouri, you could also find a couple of Native American tribes; try to learn more about them and maybe even trade with them! After that we would go on a steamboat onto the Mississippi River. You are safe. Another nine more days here!
Cost: 2000

Destination Three: Mississippi River

<---Mississippi River

We are going on a steamboat on the longest river in America about 2320 miles long. Eye witness what Huckleberry Finn have seen on his journey, except you will be much safer on the steamboat compared to the little raft Huck traveled on. It would only take six days on this part of the journey; too much steamboat pollution may be bad for you.
Cost:1000

Destination Four: South Carolina

<---Slave plantation

After we get off the Mississippi River, a couple of wagons are getting to come and transport us to South Carolina. Traveling in a wagon is guaranteed a fun experience that you ought to have even though traveling on wagons may probably take us a month to reach South Carolina. There we would visit slave plantation and how they activate. We would give you an option between the more violent plantations or the no violence one. Safety is not an issue here and again wagon will be used to move on.
Cost: 1500

Destination Five: New York
<---Statue of Liberty

Welcome to one of the big cities in America! New York is really different from South Carolina. In the north slavery is mostly banned because there are more cities here and slavery isn’t really needed. You could see the famous Statue of Liberty the French gave to the Americans as a gift for their independence. One of the best memories you could have in your lifetime. We would also see America’s national pastime sport, baseball. Baseball has recently become a very popular sport especially here. Learning a new sport is always fun! Our stay here would probably be 2 weeks!
Cost: 3000

By Kuan Yen and Richard Chen
Reflection
This artifact relates to nationalism: Nation states because it's about traveling around the different states of a country. This artifact also relates to the world seen through a microscope. This artifact took me about 1 and a half hour because I had to read through the information and analyse it. After creating this artifact, I learned about some of the states in the US. This artifact reflects my best work because the information took me a long time to analyze and figuring out what do there is also hard. For this artifact, I think the impact on the quality of my portfolio would be a 4. The impact on the level of my happiness and enjoyment would be a 4. The Impact on my learning would be a 4. And the level of creativity and originality would be a 3.
Artifact 2: A map of the Railroads


Reflection
This artifact relates to building of modern economy because the railroads helped people travel faster and its easier to do buisness and stuff. This artifact also relates to inventions and transportation. This artifact took me about 30 minutes because I had to find the picture. After creating this artifact, I learned about the route of the railroads during he 19th century. This artifact does not reflect my best work because I just found a image. For this artifact, I think the impact on the quality of my portfolio would be a 2. The impact on the level of my happiness and enjoyment would be a 3. The Impact on my learning would be a 2. And the level of creativity and originality would be a 1.

Artifact 3: Google Earth Tour-Lewis and Clark Expedition
http://www.mediafire.com/?q2giyp54ia7b3j7 - Download the Google Earth Tour
St Charles Missouri
Platte river
Yankton
Bad river
Fort Mandon, North Dakota
Milk river
Marias river
Great falls, Montana
Fort Mountan
Camp fortunate
Shoshone village
North Fork clear water river
Fort Clatsop Oregon
Snake river
Camp chopmish
Traveler's rest
Great falls - Beaver river
Point of reunion
Platte river
St Louis Missouri

Reflection
This artifact relates to notion of frontier because this is a huge part of the westward expansion. This artifact also relates to the world seen through a microscope. This artifact took me about 1 and a half hour because I had to find all the places. After creating this artifact, I learned about the route of the Lewis and Clark expidition. This artifact reflects my best work because the places took me a long time to find. For this artifact, I think the impact on the quality of my portfolio would be a 4. The impact on the level of my happiness and enjoyment would be a 3. The Impact on my learning would be a 2. And the level of creativity and originality would be a 3.
Artifact 4: Gapminder Analysis


Income per person (per ppp) & Life expectancy
In the 19th century, USA's income per person slowly increases most of the time and is kind of stable. It started out to be about two thousand in 1800 and ended up at about 5000 in 1899. The life expectancy pretty much stayed at 40 years old for most of the century., however, around the 1880s, it started to rise rapidly. It went up to almost 50 years old in 1899. This may be because of technology improvement and the country starting to become more stable and peaceful after the Civil War.  The income increase may lead to better life conditions and maybe new discoveries, which will lead to people to live longer.


Woman fertility & total population
The children per woman (total fertility) felled rapidly in the USA during the 19th century. It started out from averaging 7 children per woman in 1800 to 3.5 in 1899. Today, woman don't have a lot of children, mostly  1 or two in a lot of families; the 19th century may be the start of the "low fertility era." However, the population kept on increasing in the USA, in the end the the 19th century the population rose to 150 million people in total. Even though that less children are born, the population still increased; this means that less people are dying and more people are living longer in the USA.'


CO2 emissions (tonnes per person) & Income per person (GDP/capita, inflation-adjusted $)
 The data started from 1820, and US had about 0.08 tonnes of CO2 emissions per person and 2011 dollars income per person. Then it stayed at about 1 for 50 something years. Then in the late 19th century, it reached about 9, and as for the income per person, it increased to about 6624 by the end of the 1800's. I think this happened because the US stated to become more industrialized and that means more factory and better jobs. So there would be more CO2 emissions and better incomes.
Reflection
This artifact relates to human health because CO2 can effect peoples health and income per person can also effect peoples health. This artifact also relates to the world seen through a microscope. This artifact took me about 1 and a half hour because I had to read through the information and analyse it. After creating this artifact, I learned about some of the history on how America got to the way it is today. This artifact reflects my best work because the information took me a long time to analyze. For this artifact, I think the impact on the quality of my portfolio would be a 4. The impact on the level of my happiness and enjoyment would be a 2. The Impact on my learning would be a 4. And the level of creativity and originality would be a 3, since I'm just analyzing the document and expressing my thoughts.

Artifact 5: Open Source - Buffalo Hunt, 1846

http://www.eyewitnesstohistory.com/buffalo.htm


O - This source was created by Francis Parkman in 1849. It was created in the US by Parkman Francis. It was published by the EyeWitness to History in 2002.

P - This document exists because it show what exactly is buffalo hunting, which was one way that caused the buffalos to almost extinct. The author created this document because it records his journey after he graduated from Harvard Law school, which was in the summer of 1846, and he was 23 years old. The author wrote a journal, but the publisher typed it out again and put it on the website. The publisher put it on a website so that everyone with a computer can see it. The intended audience are whoever needs these information. I think that the author thought that no one else would see this, since it was a journal. The document tells that the author is very good a buffalo hunting.

V - The author is an expert at buffalo hunting and he graduated from Harvard Law School in the summer of 1846, when he was 23. The time period was 1846. The piece was part of Francis Parkman, the author's journal. I don't think the information sounds like a journal, but somesort of official explanation. There are no controversies in the document. The author does not represent a specific side, like I said, the document is like some sort of offical explanation on how to do something. During the time this document was created, the Americans were building railroads so they had to get rid of buffalos, so it later became a kind of sport and almost caused the buffalos to extinct. This document accurately reflects it because the document itself is about buffalo hunting.

L - We can't tell why people started buffalo hunting and what happened to the natives after the numbers of buffalos extremely decreased. We can verify the content of the piece by reading the title and reading the information. I am not sure if the piece inaccurately reflects anything about the time period because I don't know how buffalo hunting really works. The author left out the reason why people started buffalo hunting, and I think he left it out because he was feeling kind of guilty.


Reflection

This artifact relates to inventions and transportations because if it wasn't for the Americans wanting to build railroads, which is a kind of transportation, the buffalos wouldn't have to die. This artifact also relates to human movement and migration, because building the railroads was a part of moving westward. This artifact took me about 1 hour because I had to read through the information and analyse it. After creating this artifact, I learned what to do when buffalo hunting. This artifact reflects my best work because the information took me a long time to analyze. For this artifact, I think the impact on the quality of my portfolio would be a 4. The impact on the level of my happiness and enjoyment would be a 3. The Impact on my learning would be a 4. And the level of creativity and originality would be a 3, since I'm just analyzing the document and expressing my thoughts.

Artifact 6: Idea pages


Reflection
This artifact relates to the Human movement and migration because throughout the 19th century, American gained a lot of territory. This artifact also relates to empire rise and fall. I spent about 30 minutes creating this artifact. After creating this artifact, I learned some basic history and main events of America in the 19th century. This artifact does reflect my best work, because I completed the idea page in class, while I still remember everything. For this artifact, I think the impact on the quality of my portfolio would be a 3. The impact on the level of my happiness and enjoyment would be a 3. The Impact on my learning would be a 4. And the level of creativity and originality would be a 2.


Artifact 7: Google sketch-up recreation of a Civil War
Battle of Antietam
Date: September 17, 1862
Location: Near Sharpburg, Maryland
Result: Tactically inconsulsive; Strategic Union victory
Reflection
This artifact relates to the abolish of slaves since a lot of people say that it is one of the reason that caused the war. This artifact also relates class consciousness. This artifact took me about an hour because it's the first time that I have ever used google sketch-up. This artifact does reflect my best work because it took me a long time to create it. After creating this artifact, I learned about the battle field of the American civil war. For this artifact, I think the impact on the quality of my portfolio would be a 3. The impact on the level of my happiness and enjoyment would be a 5. The Impact on my learning would be a 2. And the level of creativity and originality would be a 3.

Artifact 8: Basketball, NBA

Basketball HISTORY
Basketball was first found in early December 1891, by Dr. James Naismith, a canadian-born physical education professor in the international Young Men's Christian Association Training School (YMCA), which is today's Springfield College, located in Springfield, Massachusetts, USA. It all started on a rainy day, and Dr. James tried to keep the gym class active, so he wrote down some basic rules and nailed a peach basket onto a 10-foot elevated track. The bottom of the peach basket still retained it's bottom, so after each basket, the ball had to be retrieved manually. The peach basket was removed in 1906 and got replaced by metal hoops with backboards. The first official game was played in the TMCA gymnasium on January 20, 1892 with nine players and the game ended ar 1-0. By 1897-1898, teams of five became standard.

NBA HISTORY
NBA is very important to the American, especially the African Americans because basketball gave them a chance to become a star and get a better life. NBA, which stand for the National Basketball Association was founded in New York City on June 6, 1946 as the Basketball Association of America. The first game was on November 1, 1946, played by the Huskies and the New York Knickerbockers at Maple Leaf Gardens, and the Knickerbockers won the game that night, 68-66. The game was totally different than what we are seeing now, the players didn’t know how to dunk or do a double-pump, nor could they have done a jump shot.

TODAY
Some of the best teams today in the NBA are the Lakers, Celtics, and the Heats. These three teams are the three teams with the best chance to win the championship. The Lakers have the best chance, because they have Kobe Bryant, who is known to many as the best player in the world, and Pau Gasol, one of the best centers/ power foward. They are also aiming for its third straight championship. The Miami Heat just came of a great offseason by signing three young superstars: Lebron, Wade, and Bosh. The Celtics are four probable hall of famers in their team with one rising star in Rajon Rondo. Young teams like the Thunders, Pacers, and the Blazers are rising to power. The Thunders are one of the few teams that have power to challenge the Lakers in the Western Conference.

Reflection
This artifact relates to race relations because it gave the African Americans, the people that had lower statuses to have a chance to become a star. This artifact also relates class consciousness. This artifact took me about 45 minutes because I was analyzing the information for a while. This artifact does reflect my best work because basketball is something that I’m interested in. After creating this artifact, I learned about the history of NBA and how it is very important to the Americans. For this artifact, I think the impact on the quality of my portfolio would be a 3. The impact on the level of my happiness and enjoyment would be a 5. The Impact on my learning would be a 4. And the level of creativity and originality would be a 2.

Artifact 9: White and Red Poem
White
We have power, to kick them out there.
They have no right, to not surrender.
We have power, to expand our kingdom.
They have no right, to stop us from that.
Red

It's not fair, for them to get what they want.
We should fight back, and get what we want.
It's not fair, for us to suffer.
We should fight back, then they shall suffer.


Reflection
This artifact relates to class consciousness because it talks about the same thing from two different classes point of view. This artifact also relates to race relations. This artifact took me about 15 minutes. After creating this artifact, I learned about what was going on between the white people and the indians. This artifact does reflect my best work, because it was something that I wrote right after I learned about the information. For this artifact, I think the impact on the quality of my portfolio would be a 3. The impact on the level of my happiness and enjoyment would be a 5. The Impact on my learning would be a 4. And the level of creativity and originality would be a 4.

Artifact 10: Educational Timeline

1801 - James Pillans invents the blackboard.

1812-1815 - The
War of 1812, sometimes called the "Second War of Independence," occurs for multiple reasons, including U.S. desires for territorial expansion and British harassment of U.S. merchant ships. The war begins with an  unsuccessful invasion of Canada by U.S. forces. Though the Treaty of Ghent, signed on December 24, 1814, supposedly ends the war, the final battle actually takes place January 8, 1815 with U.S. forces defeating the British at New Orleans.  

1817 - The
Connecticut Asylum at Hartford for the Instruction of Deaf and Dumb Persons opens. It is the first permanent school for the deaf in the U.S. Thomas Hopkins Gallaudet and Laurent Clerc are the school's co-founders. In 1864, Thomas Gaullaudet's son, Edward Miner Gallaudet, helps to start Gallaudet University, the first college specifically for deaf students. 

1821 - The first public high school, Boston English High School, opens .

1823 -
Catherine Beecher founds the Hartford Female Seminary, a private school for girls in Hartford, Connecticut. She goes on to found more schools and become a prolific writer. Her sister, Harriet Beecher Stowe, an influential abolitionist, is the author of Uncle Tom's Cabin.

1827 - The state of
Massachusetts passes a law requiring towns of more than 500 families to have a public high school open to all students.

1829 - The New England Asylum for the Blind, now the Perkins School for the Blind, opens in Massachusetts, becoming the first school in the U.S. for children with visual disabilities.

1836 - The first of
William Holmes McGuffey's readers is published. Their secular tone sets them apart from the Puritan texts of the day. The McGuffey Readers, as they came to be known, are among the most influential textbooks of the 19th Century.

1837
- Horace Mann becomes Secretary of the newly formed Massachusetts State Board of Education. A visionary educator and proponent of public (or "free") schools, Mann works tirelessly for increased funding of public schools and better training for teachers. As Editor of the Common School Journal, his belief in the importance of free, universal public education gains a national audience. He resigns his position as Secretary in 1848 to take the Congressional seat vacated by the death of John Quincy Adams and later becomes the first president of Antioch College.

1837 - Eighty students arrive at Mount Holyoke Female Seminary, the first college for women in the U.S. Its founder/president is Mary Lyon.

1839 - The first state funded school specifically for teacher education (then known as "normal" schools) opens in Lexington, Massachusetts.

1848 -
Hervey Wilbur helps establish the Massachusetts School for Idiotic and Feebleminded Youth, the first school of its kind in the U.S.

1849 -
Elizabeth Blackwell graduates from Geneva Medical College, becoming the first woman to graduate from medical school. She later becomes a pioneer in the education of women in medicine.

1851 - The
New York State Asylum for Idiots opens.

1852 - Massachusetts enacts the first mandatory attendance law. By 1885, 16 states have compulsory-attendance laws, but most of those laws are sporadically enforced at best. All states have them by 1918.

1853 -
Pennsylvania begins funding the Pennsylvania Training School for Feeble-Minded Children, a private school for children with intellectual disabilities.

1854 -The
Boston Public Library opens to the public. It is t
he first major tax-supported free library in the U.S.

1854 - Ashmun Institute, now
Lincoln University, is founded on October 12, and as Horace Mann Bond, the university's eighth president states in his book, Education for Freedom: A History of Lincoln University, it becomes the "first institution anywhere in the world to provide higher education in the arts and sciences for male youth of African descent." The university's many distinguished alumni include Langston Hughes and Thurgood Marshall.

1856 - The first kindergarten in the U.S. is started in Watertown, Wisconsin, founded by Margarethe Schurz. Four years later, Elizabeth Palmer Peabody opens the first "formal" kindergarten in Boston, MA.

1857 - The National Teachers Association (now the National Education Association) is founded by forty-three educators in Philadelphia.

1859
-
Charles Darwin's The Origin of Species is published on November 24, introducing his theory that species evolve through the process of natural selection, and setting the stage for the controversy surrounding teaching the theory of evolution in public schools that persists to this day.

1860 -
Abraham Lincoln, an anti-slavery Republican, is elected president.

1861
- The U.S. Civil War begins when South Carolina secedes from the union and along with 10 other states forms the Confederate States of American. The shooting begins when Fort Sumter is attacked on April 12. With the exception of the First Morrill act of 1862, educational progress is essentially put on hold until the war's end. 

1862 - The First Morrill Act, also known as the "Land Grant Act" becomes law. It donates public lands to states, the sale of which will be used for the "endowment, support, and maintenance of at least one college where the leading object shall be, without excluding other scientific and classical studies and including military tactics, to teach such branches of learning as are related to agriculture and the mechanic arts, in order to promote the liberal and practical education of the industrial classes in the several pursuits and professions in life." Many prominent state universities can trace their roots to this forward-thinking legislation.

1863 -
President Lincoln signs the "Emancipation Proclamation" on January 1.

1865 - The
13th Amendment is passed, abolishing slavery.

1865 - The Civil War ends with
Lee's surrender at Appomattox Courthouse. Much of the south, including its educational institutions, is left in disarray. Many schools are closed. Even before the war, public education in the south was far behind that in the north. The physical devastation left by the war as well as the social upheaval and poverty that follow exacerbate this situation.

1865 -
Abraham Lincoln is assassinated, and Andrew Johnson, a southern Democrat and advocate of state's rights, becomes President.

1866 - The
14th Amendment is passed entitling all persons born or naturalized in the United States to citizenship and equal protection under the law. This gives freed male slaves the right to vote. Most southern states refuse to ratify it.
   
1867 - The
Department of Education is created in order to help states establish effective school systems.



1867 - After hearing of the desperate situation faced schools in the south, George Peabody funds the two-million-dollar Peabody Education Fund to aid public education in southern states.

1867 -
Howard University is established in Washington D.C. to provide education for African American youth "in the liberal arts and sciences.” Early financial support is provided by the Freedmen's Bureau.

1867
- Christopher Sholes invents the "modern" typewriter. Known as the Sholes Glidden, it is first manufactured by E. Remington & Sons in 1873.

1867 & 1868 - The four Reconstruction Acts are passed over President Andrew Johnson's veto. They divide the south into military districts and require elections to be held with freed male slaves being allowed to vote.

1869 - Congress passes the
15th Amendment. It prohibits states from denying male citizens over 21 (including freed slaves) the right to vote.

1869 - Boston creates the
first public day school for the deaf.

1873 - The Panic of 1873 causes bank foreclosures, business failures, and job loss. The economic depression that follows results in reduced revenues for education. Southern schools are hit particularly hard, making a bad situation even worse. 

1873
-The Society to Encourage Studies at Home is founded in Boston by Anna Eliot Ticknor, daughter of Harvard professor George Ticknor. It's purpose is to allow women the opportunity for study and enlightenment and becomes the first correspondence school in the United States.


1874 - The Michigan State Supreme Court rules that Kalamazoo may levy taxes to support a public high school, setting an important precedent for similar rulings in other states.

1875 - The
Civil Rights Act is passed, banning segregation in all public accommodations. The Supreme Court rules it unconstitutional in 1883.

1876 -
Edouard Seguin becomes the first President of the Association of Medical Officers of American Institutions for Idiotic and Feebleminded Persons, which evolves into the American Association on Intellectual and Developmental Disabilities.

1876 -
Meharry Medical College is founded in Nashville, Tennessee. It is the first medical school in the south for African Americans.

1877 - Reconstruction formally ends as President Rutherford B. Hayes removes the last federal troops from the south. The foundation for a system of legal  segregation and discrimination is quickly established. Many African Americans flee the south.

1879 - The
first Indian boarding school opens in Carlisle, Pennsylvania. It becomes the model for a total of 26 similar schools, all with the goal of assimilating Indian children into the mainstream culture. The schools leave a controversial legacy. Though some see them as a noble, albeit largely unsuccessful experiment, many view their legacy to be one of alienation and "cultural dislocation." The Carlisle Indian Industrial School closes in 1918. Famous athlete Jim Thorpe is among the school's thousands of alumni.

1881 - Booker T. Washington becomes the first principal of the newly-opened normal school in Tuskegee, Alabama, now Tuskegee University.

1884 -The
first practical fountain pen is patented by Lewis Waterman.

1887 - The
Hatch Act of 1887 establishes a network of agricultural experiment stations connected to land grand universities established under the First Morrill Act.

1889 - Jane Addams and her college friend Ellen Gates Starr found Hull House in a Chicago, Illinois neighborhood of recent European immigrants. It is the first settlement house in the U.S. Included among its many services are a kindergarten and a night school for adults. Hull House continues to this day to offer educational services to children and families.

1890 - The Second Morrill Actis enacted. It provides for the "more complete endowment and support of the colleges" through the sale of public lands, Part of this funding leads to the Creation of 16 historically black land-grant colleges.

1891 -
Stanford University is founded in 1891 by former California Governor and railroad tycoon Leland Stanford in memory of his son, Leland Jr.
1892 - The Committee on Secondary Social Studies, often called the Committee of Ten, recommends a college-oriented high school curriculum.

1896 - Homer Plessy, a 30-year-old African American, challenges the state of Louisiana's "Separate Car Act," arguing that requiring Blacks to ride in separate railroad cars  violates the 13th and 14th Amendments. The U.S. Supreme Court upholds the Louisiana law stating in the majority opinion that the intent of the 14th Amendment “had not been intended to abolish distinctions based on color.”Thus, the Supreme Court ruling in the case of Plessy v. Ferguson makes "separate but equal" policies legal. It becomes a legal precedent used to justify many other segregation laws, including "separate but equal" education.

1898 - The Spanish American War makes Theodore Roosevelt a hero, and the United States becomes an international power.
Reflection
This artifact relates to Empires rises and fall because without education, they won’t have knowledge and will not have the power to do something big, like becoming the president of the United States. This artifact also relates to religion and science. This artifact took me about 30 minutes. After creating this artifact, I learned about how the education system was built up during the 19th century. This artifact does reflect my best work, although the information of the timeline is got from somewhere else. For this artifact, I think the impact on the quality of my portfolio would be a 3. The impact on the level of my happiness and enjoyment would be a 3. The Impact on my learning would be a 4. And the level of creativity and originality would be a 2.

Artifact 11: Important Events
1800-Washington D.C. becomes U.S. capital

1803-Louisiana Purchase from France doubles U.S. size

1804-Lewis and Clark explore Louisiana and Northwest Territories

1812-War of 1812 fought between US and Britain

1819-US acquires Florida from Spain

1830-Indian Removal Act forces Native Americans west of mississippi River

1836-Texans defend the Alamo

1838-Cherokee Nation forced west on "Trail of Tears"

1846-Mexican War gives U.S Southwestern Territories, Britain cedes Oregon Country to U.S

1848-Gold discovered in California

1853-National Council of Colored People is founded

1860-Abraham Lincoln elected 16th president of the U.S

1861-Civil War begins when Confederates fire on Fort Sumter

1862-Lincoln proclaims abolition of slavery in the U.S.

1869-Coast- to- coast railroad is finished in Utah

1876-Custer defeated at Battle of Little Big Horn

1889-Jane Addams founds Hull House in Chicago to help immigrants

1898-U.S. defeats Spain in Spanish, American War

Reflection
This artifact relates to alot of things, but I think I'll categorize it into Nationalism: Nation states, since part of the information is about America dividing into different states. This artifact also relates to abolsih of slaves and class consciousness and abolish of slaves. This artifact took me about 30 minutes. After creating this artifact, I learned about some of the important events in Ameica. This artifact does reflect my best work, although the information is got from somewhere else. For this artifact, I think the impact on the quality of my portfolio would be a 3. The impact on the level of my happiness and enjoyment would be a 3. The Impact on my learning would be a 3. And the level of creativity and originality would be a 2.

Artifact 12: Idea pages
Artifact 13: Prezi - captins of industry or Robber Baron?
Artifact 14:
Artifact 15:

Artifact 16:
Artifact 17: The American Dream Gamea