Showing posts with label interesting. Show all posts
Showing posts with label interesting. Show all posts

Maddelacheruvu Suri Killed: Ram Gopal Varma Tweets Shock

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4th Jan, 2011: Ram Gopal Varma, the film director who directed the movie Raktha Charitra I and its sequel Raktha Charitra II, tweeted on Tuesday, "Its shocking to see a person with whom I have been interacting with for over a year for research of Raktha Charithra just lying there, still and lifeless." His tweet was made in reference to the killing of factionist leader Maddelacheruvu Suri.

The director, also called RGV, said that Suri was the inspiration behind the making of the Raktha Charitra movie series, and he had collected a lot of minute details from the man who was the key suspect in the murder of Telugu Desam Party MLA Paritala Ravi for making of film.

Expressing serious concern and shock, RGV tweeted, "By the time I finished Rakta Charitra, the reality became a film for me, and now this incident jolted me back into reality".

Tamil actor Surya, who enacted the role of Suri, termed the incident "unfortunate" and added, "I am shocked, I have no words to express myself".

According to film aficionados, the murder of Gangula Suryanarayana Reddy alias Maddelacheruvu Suri in cold-blood on Monday will undoubtedly spur RGV into making many more movies on the subject.

Though the 2 Rakta Charitra movies did not do as well as expected at the box office, there was a lot of hype surrounding the movie.

Though the sequel of the movie annoyed Madelacheruvu Suri and associates in Anantapur district, Varma had claimed that any kind of publicity was good for him and termed the movie 'just fiction'.


Perilous virus scanners

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TOP 5 PERILOUS ROGUEWARE

1. MS ANTIVIRUS

The popular 'MS Antivirus' family is characterized by special professional appearance and blocks the active virus scanner. The rougueware even trades under names like 'System Security' or 'WinPC Defender'.

2. SECURITY TOOL

The rogueware known as 'Total Security' imitates security warnings from Windows. It can delete desktop icons, display a black desktop background and slows down the system.
3. InTERNET SECURITY 2010

Internet Security 2010 not only annoys with warning messages. But using an infiltrated DLL file it blocks websites such as Facebook and YouTube so as to pursue the user to purchase the full fake version.

4. ANTIMALWARE DEFENDER

Different from the original 'Windows Defender' by Microsoft, this rogueware is difficult to identify by untrained eyes. Once it ends up on the computer, it takes control of the browser and frequently displays virus warnings.

5. USER PROTECTION

This variant spreads itself in form of fake video codecs that are offered over manipulated websites that offer videos for download. 'User Protection' affects the system performance and soon leads to system crash.





Hackers and web fraudsters make a killing with the help of spurious anti-virus programs. And distinguishing these from the real ones can be very tricky.


 

The desktop suddenly becomes black, security warnings are flashed and an unknown virus scanner offers itself as a solution for the problem: often this is how the attacks of cyber gangsters appear. Most of the times the invader uses fake anti-virus programs (rogueware or fake antivirus), which tempts us with virus messages to purchase expensive full versions. And this trick has worked like magic for millions: This year alone, McAfee has valued total damages of over $300 million all over the world. We show how to trace rogueware and how to get rid of them. An updated Security Suite is of utmost importance, since every month thousands of new rogueware samples and millions of such websites appear over the Internet—a briskly increasing trend. Fake antivirus programs can be categorized into hundreds of families, out of which only a handful are known.

Identification: Obtrusive pop-ups

Rogueware spreads itself through primed websites. They use security loopholes in the browser or in plug-ins like Flash Player; and introduce malware over drive-by download or request the user to download fake video codecs, which contains malicious codes.

In case a fake scanner is installed on your PC, you can identify it from the symptoms. The most obvious are obtrusive pop-ups indicating  apparent virus attacks followed by requests to purchase the full version. Close this window from Task Manager, because even clicking on 'Cancel' can open a perilous website or download other malware. A few variants display messages using security risks warnings in the taskbar or firewall warnings and change the desktop wallpaper or screensaver. Moreover, rogueware scans the computer much faster than an authentic virus scanner and displays unrealistic results.

Very rarely do rogueware attack alone. Once the attacker gets access to the computer, they can then further add more malware. Mostly, these fake antiviruses are accompanied by trojans that spy on the computer and forward user data using a backdoor or install programs such as keylogger. A worm subsequently connects the infected computer into a botnet, so user unknowingly contributes to spreading the rogueware. Nowadays, extortionist tools (ransomware) have also started coming along with fake antiviruses.

The various symptoms bothers the user till he/she eventually visits the website of the fake antivirus. The attacker even spreads the links to these sites through spam mails as well as over social networking websites such as Facebook and Twitter. Thus, the promoted programs are revealed often through cryptic web addresses in the mails. If you wish to install a new virus protection, you should always visit the website of the antivirus developer directly: even Google search is not secure.  It is the second most popular way to spread such programs. In the process, the hackers use latest topics, and also specific search queries related to virus protection, so as to list their sites right at top of the search results. Most of the times these sites do not contain any malicious codes but they automatically direct the user to a website which eventually infects the computer.

At first glance the professionally designed websites of rogueware developers appear impressively authentic, for instance the way they feature fictitious test results and high discounts. Some of them even feature a functional telephone and email helpline service. The promoted programs costs anything between Rs 1,845 and Rs 6,000, however, soon from the price everything seems suspicious. Generally, you should stay away from such programs that scan computer for free but require a full version for removing the viruses. And in any case you should never reveal your credit card details on such websites.

However, if you have installed an updated security suite, it should be able to prevent every rogueware attack. Even if an attacker manages to slip in, for instance while the virus scanner was not updated, it is very possible that the fake antivirus blocks your Security Suite. Subsequently you should never download anymore updates and in any case do not start your virus scanner. In such a case, you should try using a malware removal tool by another manufacturer (for instance Kaspersky Virus Removal Tool).

Removal: Often only with detours

In case none of the above tips help, you must remove the worm manually. First of all, check your PC with the online scanner of an antivirus developer. You will then be able to see which rogueware has affected the computer, thereafter with help of support sites such as removeIt.info, you can find out which process you should end and which registry entries are required to be deleted. This way you can restore the system to a state in which an updated virus scanner will be able to remove traces of the rogueware.


Online scanners:

housecall.trendmicro.com
security.symantec.com

Removal tips:
removeit.info
www.bleepingcomputer.com
www.removeonline.com  



THE FUTURE OF READING

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HOW GOOD IS APPLE’S FAMOUS IPAD? AND WHAT ADVANTAGES DO DEDICATED EBOOK READERS HAVE?


At the time the first book was printed, no one ever knew how far the concept of reading text would actually go. From paper to ePaper, from books to eBooks, we sure have come a long way in delivering information. E-book readers are here to revolutionize the way we read text. It’s now time to reinvent books, newspapers and magazines and maybe even provide additional sources of income to publishing companies.
The Amazon Kindle was the first of its kind to change the way eBooks are read. Now Apple has stepped up with the iPad that offers much more than simply displaying books in black and white. However does Apple really plan to turn things around with the iPad? What other features should eBook readers offer? Which should we opt for and how helpful will it be to us? CHIP checked out the iPad, Kindle & OlivePad and explains how these devices  function. We have evaluated each of them based on the screen technology, display quality, price, compatibility and overall impression.

The sources of eBooks

Amazon is the number one source for standard books over the Internet. So they saw the opportunity would also have an excellent collection of eBooks as well. In January, Amazon created a digital platform for authors to publish books on their own. However, it is still unknown when Amazon will extend its wide range of books in EPUB format, which is a common standard. Apple too remains tight-lipped about the future of its eBook store and the publishing houses it plans to negotiate with.
News has it that Google is expected to jump in, with plans to start a revolution in the market. Day to day indications show that they plan to launch an in-house platform called Google Editions by the end of 2010. The search engine giant is expected to introduce a suitable tablet device for this purpose which should spice things up. In addition, it already has an ambitious platform called Google Books. However, Google Editions is expected to be much more than just a book store, for example combining search, shopping and book reading. One would not even need a Wi-Fi connection, since most eBooks can be transmitted via mobile networks.

Old Classics as a Gift

EBooks offer a big advantage: Books whose copyrights have already expired are available free of cost. This is how classics written by well-known writers can be transferred to readers from popular websites such as www.eBooks.com or from Google Books. They come in either the EPUB format or as PDFs. Moreover digitized books are available forever. This comes in as an advantage in case of books which were published only in small quantities. Once they are converted to eBooks they will never be out of circulation again.

Price: Are eBooks cheaper?

First and foremost, to be able to read eBooks one must make a prior investment. The Amazon Kindle costs approximately Rs 9,000 whereas an entry level iPad will cost you nothing less than Rs 23,000 and the OlivePad is expected to launch at prices between Rs 22,000 and Rs 25,000. Some eBooks cost up to 20 percent less when compared to the cost of a printed hardcover edition. However, there is a possibility of an increase in price if the eBook comes spiced up with photo galleries and videos— so there is no definite answer to this question.
 

How do the iPad, Kindle and OlivePad function?

Electrophoresis (E-ink): In E-ink, a dark colored liquid in so-called microcapsules can be seen floating between two plates. Many tiny particles reflect light strongly and appear white.  If a charge is applied, the particles migrate electrophoretically to the opposite charged plate. If they float on the upper side, light is reflected and the point appears to be white. If the particles are on the lower side, light is absorbed by the dark fluid which makes the point appear black. The great advantage of this technology is that the particles remain at their position until the plates receive a new charge. Thus, an e-book page does not require electricity to stay active; only when you want to change its contents.  Such a material is called Bistable.

The advantage of E-Ink technology is that it is less stressful on eyes and draws current only for turning over the pages. However, electrophoresis has a critical disadvantage:  particles migrate rather slowly, so the overall transition time from one state to another is quite long, making it unsuitable for videos. Even flipping pages in an eBook takes a second or two.

Electrowetting: A mixture of water and oil is used.  A small capsule, which has a very bright, white background on its lower side, contains water.  If voltage is not applied, a colored oil covers the entire lower surface of the capsule and reflected light appears in the color of the oil.  If voltage is applied, the oil shrinks into a tiny drop at the edge and only the white layer is visible. Many colors can be mixed by combining different-colored oils in neighboring sub pixels.  These displays are easy to produce, sleek, and reach switching speeds of less than 50 milliseconds, which is smooth enough for video at 25 frames per second. However voltage needs to be applied continuously for the oil drops to remain shrunken, which strains the battery. 

What can an eBook reader handle?

Books, newspapers and magazines can appear just as if printed. However, if media professionals really start exploring the possibilities of this technology, people will experience multimedia pages, not just recreations of old books. Digital books can consist of print, audio and video combined. At present the iPad has a considerable advantage over the Kindle. Due to the large display and the colors, one can garnish eBooks with interactive illustrations and possibly even establish an online community to discuss the book.

EBooks are ideal for more than just education. The iPad and OlivePad enable completely new narrative structures for magazines and newspapers. They combine interactive elements from the Internet with videos and audio. However this does not mean that printed books will go out of circulation anytime soon. E-Books are expected complement traditional publishing.

Formats supported by eBook readers

Ideally eBooks should come with no limitations, where all books function on all devices and every customer pays for his merchandise. However in reality, this is completely different. There are already a range of best sellers available in different languages on popular file-sharing networks. In order to nip the piracy problem in the bud, many publishing houses have implemented copyright protection systems. After the disputes over MP3, customers are once again facing the same problem where all media will not function on all devices. Apple, for example, allows access to iBooks only via its own devices. It has implemented a similar system for encryption that has already been tried and tested for music files. On the other hand, Amazon uses the proprietary AZW DRM, which can be read only by the Kindle. Common distributors are beginning to implement DRM protection even on the extremely popular EPUB format. Therefore the OlivePad and any other device which is based on open standards cannot be used to access Amazon or even Apple stores. It also isn't easy to lend eBooks to family or friends. We can only hope that intrusive copy protection will not discourage customers as it did with music downloads.

Hardware specifically designed for eBook reading can be sorted into two classes: Readers and Tablet PCs. The classic E-Book reader such as the Kindle from Amazon is based on E-Ink technology. They work without a backlight, since the text is displayed using dark colored liquid. On the other hand, Tablet PCs such as the iPad and the recently launched OlivePad are based on the LCD technology widely used in monitors and TVs. These are versatile and quick enough to display rich videos, but end up being quite stressful for the eyes when viewed for long periods. These devices are a good choice for multimedia content; one can even spice up newspapers with videos and interactive media.

Future Advancement
A perfect all-rounder which can display books and newspapers, still does not exist. There still remains a wide scope for development with respect to the displays.

There is speculation that the next version of the Kindle will be able to display videos in color. There is also a certain amount of discussion about the new version of the Apple iPad: it would feature an OLED display which will be able to display higher contrasts with lower power consumption. In the near future, the computing power of eBook reader devices could be increased through cloud computing and high-speed wireless data connections. Tablets would then set themselves apart from netbooks and even smartphones, instead of being classified as a mixture of these devices.

At the moment eBook readers are only meant for those who are serious about reading and want their libraries to be totally portable. No doubt that there is a wide range of books, magazines and newspapers available online but the major drawback of these products is the high cost of hardware. Users are advised to ensure any product they buy has a long battery runtime and should be able to read most formats. Moreover the weight must be comfortable enough.

In addition one should also look out for extra features that one would get after buying the device. Anyone who wishes to surf the Web, play games or watch movies is best suited with an iPad as its large display offers considerably much more viewing area. Fans of tablet PCs should also take a look at the OlivePad. Since it is totally based on an open source environment (Android) it offers considerably more options than Apple’s restrictive iPad. On the other hand, the Amazon Kindle is perfectly suited for bookworms (who are willing to pay for legal eBooks). However, the current Kindle devices aren’t suitable for future formats with interactive content and color. 


Julian Assange, WikiLeaks Guy, Arrested For Rape

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Julian Assange, the dude with the knockoff Neil Patrick Harris haircut who runs WikiLeaks, just got arrested, though not because of his controversial site.
He faces rape, sexual molestation and unlawful coercion charges in Sweden.
An Australian national, Julian Assange has reportedly been hiding in the U.K. since WikiLeaks posted a deluge of classified, explosive documents recently.
Julian Assange Picture
LEAK THIS: Julian Assange is in custody.
Apprehended on the charges resulting from alleged behavior in Sweden, Assange is due in court today. We know one person who's probably cackling inside.
A spokesman based at Scotland Yard confirmed that the "extradition unit" arrested Assange "on behalf of the Swedish authorities on suspicion of rape."
He's accused of "unlawful coercion, two counts of sexual molestation and one count of rape, all alleged to have been committed in August 2010."
The charges were initially made by two women Assange met on a business trip. Initially dropped, the case was just recently reopened ... stunningly.
The statement continued, "Julian Assange, 39, was arrested on a European Arrest Warrant by appointment at a London police station at 9:30 a.m.
Assange's lawyer's office was not taking calls Tuesday, but the BBC quoted his lawyer, Mark Stephens, as saying he was looking for "truth, justice."
He added that his client is cooperating fully, and that "Julian Assange has been the one in hot pursuit to vindicate himself to clear his good name."
WikiLeaks publishes highly classified documents, behavior it justifies by claiming it fosters openness and reveals illegal, immoral activity worldwide.
Critics say some of the leaked information posted on WikiLeaks may not only compromise national security, but damage international relationships.


Mobile phone ban in utterpradesh

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Mobile phone ban for unmarried women

Women in rural India are being subjected to yet another form of discrimination. The panchayat of Lank village in the populous state of Uttar Pradesh has imposed a ban on mobile phone use for unmarried women. Mobile phones are considered instrumental in arranging forbidden marriages.


An Indian village has banned unmarried women from using mobile phones for fear they will arrange forbidden marriages that are often punished by death, a local official said today.
mobile ban.jpg
A Kolkata slum dweller talks on a mobile in India, where the phones have become more affordable/Photo credit: Jayanta Shaw/Reuters/Corbis
The Lank village council decided unmarried boys could use mobile phones, but only under parental supervision, said one council member, Satish Tyagi. Local women's rights group criticised the measure as backward and unfair.
Marriages between members of the same clan are forbidden under Hindu custom in some parts of northern India, where unions are traditionally arranged by families. In conservative rural areas, families sometimes mete out extreme punishments, including "honour killings", for those who violate marriage taboos. In some cases, village councils themselves have ordered the punishments, though police often intervene to stop them.
The Lank village council feared young men and women were secretly calling one another to arrange to elope.
Last month, 34 couples eloped in Muzaffarnagar district, where Lank is located, in the northern state of Uttar Pradesh, police said. Among the couples who did so, eight "honour killings" have been reported in the past month, police said.
"Three girls were beheaded by the male members of their family after they eloped," said the police assistant director general, Brij Lal, in the state capital of Lucknow.
Rulings by village councils – called panchayats and comprising village elders selected by the community – are not legally binding in India but are seen as the will of the local community, and those who flout them risk being ostracised. In Uttar Pradesh, panchayats are particularly powerful and have declared that boys and girls of the same clan are essentially siblings.
The mobile phone ban for unmarried women is part of a wider, regional effort to curb intra-clan marriage among the 3 million people of western Uttar Pradesh, Tyagi said. The Lank council ruling, which applies to around 50,000 people, is being considered by councils in nearby villages.
"The village council members feel that cell phones helped in the elopement of young couples," he said by mobile from Muzaffarnagar.
Most marriages in the region are still arranged by the parents, sometimes without the couple meeting before the wedding. But young people are mingling more, with more women in schools and offices and increased access to the internet. They are also watching more western TV shows that focus on independence and individuality, sociologists say.
Mobile phones, meanwhile, have become so common and affordable that even city slum dwellers, rural day labourers and children have them. Across the nation of 1.2 billion people, there were more than 670m mobile phone connections as of August, with the number growing by nearly 20m a month, according to government figures.
The local women's rights group, Disha, said the ban demonstrated the councils' archaic mindset, and warned that it could put girls at a disadvantage in other areas of life.
"These help in easy communication, which in turn helps these youths to get jobs. One cannot discriminate in the use of these contraptions on the basis of sex," said the Disha president, KN Tiwari.


khan Academy Browse 1800+ videos by topic:

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Browse 1800+ videos by topic:
Algebra
  1. Simple Equations
  2. Equations 2
  3. Equations 3
  4. Algebra: Linear Equations 4
  5. Algebra: Solving Inequalities
  6. Algebra: graphing lines 1
  7. Algebra: Slope and Y-intercept intuition
  8. Algebra: Slope
  9. Algebra: Slope 2
  10. Algebra: Slope 3
  11. Algebra: Equation of a line
  12. Slope and Y-intercept Intuition
  13. Averages
  14. Integer sums
  15. Taking percentages
  16. Growing by a percentage
  17. Another Percent Word Problem
  18. More percent problems
  19. systems of equations
  20. Introduction to Ratios (new HD version)
  21. Ratio problem with basic algebra (new HD)
  22. More advanced ratio problem--with Algebra (HD version)
  23. Alternate Solution to Ratio Problem (HD Version)
  24. Introduction to Ratios
  25. Advanced ratio problems
  26. Age word problems 1
  27. Age word problems 2 
  28. Age word problems 3
  29. Level 1 multiplying expressions
  30. Solving a quadratic by factoring
  31. i and Imaginary numbers
  32. Complex Numbers (part 1)
  33. Complex Numbers (part 2)
  34. Introduction to the quadratic equation
  35. Quadratic Equation part 2
  36. Completing the square
  37. Quadratic Formula (proof)
  38. Quadratic Inequalities
  39. Quadratic Inequalities (Visual Explanation)
  40. Introduction to functions
  41. Functions Part 2
  42. Functions (Part III)
  43. Functions (part 4)
  44. Domain of a function
  45. Proof: log a + log b = log ab
  46. Proof: A(log B) = log (B^A), log A - log B = log (A/B)
  47. Proof: log_a (B) = (log_x (B))/(log_x (A))
  48. Algebraic Long Division
  49. Introduction to Conic Sections
  50. Conic Sections: Intro to Circles
  51. Conic Sections: Intro to Ellipses
  52. Conic Sections: Intro to Hyperbolas
  53. Conic Sections: Hyperbolas 2

Algebra I Worked Examples

  1. Solving Equations 1
  2. Solving Equations 2
  3. Solving Equations with the Distributive Property
  4. Solving equations with the distributive property 2
  5. Algebraic Word Problem
  6. Sum of Consecutive Odd Integers
  7. Example of Solving for a Variable
  8. Solving for a Variable 2
  9. Absolute Value 1
  10. Absolute Value and Number Lines
  11. Absolute Value Equations 1
  12. Absolute Value Equation Example 2
  13. Patterns in Sequences 1
  14. Patterns in Sequences 2
  15. Equations of Sequence Patterns
  16. Finding the 100th Term in a Sequence
  17. Functional Relationships 1
  18. Testing if a relationship is a function
  19. Domain and Range 1
  20. Domain and Range 2
  21. Direct Variation 1
  22. Basic Rate Problem
  23. Basic Linear Function
  24. Exploring linear relationships
  25. Recognizing Linear Functions
  26. Exploring nonlinear relationships
  27. Slope of a line
  28. Slope Example
  29. X and Y intercepts
  30. X and Y intercepts 2
  31. Graphing a line in slope intercept form
  32. Equation of a line
  33. Converting to slope-intercept form
  34. Point-slope and standard form
  35. Parallel Lines
  36. Parallel Lines 2
  37. Parallel lines 3
  38. Perpendicular Lines
  39. Perpendicular lines 2
  40. Interpreting Inequalities
  41. Solving Inequalities
  42. Inequalities
  43. Absolute value inequalities
  44. Absolute Inequalities 2
  45. Absolute value inequalities 3
  46. Writing and using inequalities
  47. Writing and using inequalities 2
  48. Writing and using inequalities 3
  49. Solving and graphing linear inequalities in two variables
  50. Graphing linear inequalities in two variables
  51. Graphing linear inequalities in two variables
  52. Solving systems by graphing
  53. Solving systems by graphing 2
  54. Solving systems by graphing 3
  55. Solving systems by substitution 1
  56. Solving systems by substitution 2
  57. Solving systems by substitution 3
  58. Solving systems by elimination
  59. Solving systems by elimination 2
  60. Solving systems by elimination 3
  61. Systems and rate problems
  62. Systems and rate problems 2
  63. Systems and rate problems 3
  64. Mixture problems 1
  65. Mixture problems 2
  66. Mixture problems 3
  67. Graphing systems of inequalities
  68. Graphing systems of inequalities 2
  69. Graphing systems of inequalities 3
  70. Exponent Rules 1
  71. Exponent Rules 2
  72. Exponent Rules 3
  73. Scientific notation 1
  74. Scientific notation 2
  75. Scientific notation 3
  76. Simplifying Expressions with Exponents
  77. Simplifying Expressions with Exponents 2
  78. Simplifying Expressions with Exponents 3
  79. Pythagorean Theorem 1
  80. Pythagorean Theorem 2
  81. Pythagorean Theorem 3
  82. Simplifying Radical Expressions1
  83. Simplifying Radical Expressions 2
  84. Simplifying Radical Expressions 3
  85. Solving Radical Equations 1
  86. Solving Radical Equations 2
  87. Solving Radical Equations 3
  88. Applying Radical Equations 1
  89. Applying Radical Equations 2
  90. Applying Radical Equations 3
  91. Fractional Exponent Expressions 1
  92. Fractional Exponent Expressions 2
  93. Fractional Exponent Expressions 3
  94. Multiplying and Dividing Monomials 1
  95. Multiplying and Dividing Monomials 2
  96. Multiplying and Dividing Monomials 3
  97. Polynomials1
  98. Polynomials 2
  99. Adding and Subtracting Polynomials 1
  100. Adding and Subtracting Polynomials 2
  101. Adding and Subtracting Polynomials 3
  102. Multiplying Polynomials1
  103. Multiplying Polynomials 2
  104. Multiplying Polynomials 3
  105. Special Products of Polynomials 1
  106. Special Products of Polynomials 2
  107. U08_L2_T4_we3 Special Products of Polynomials 3
  108. Bay Area CBS Station with Salman Khan
  109. Factoring and the Distributive Property
  110. Factoring and the Distributive Property 2
  111. Factoring and the Distributive Property 3
  112. Factoring Trinomials by Grouping 1
  113. Factoring Trinomials by Grouping 2
  114. U09_L1_T2_we3 Factoring Trinomials by Grouping 3
  115. Factoring Trinomials by Grouping 4
  116. Factoring Trinomials by Grouping 5
  117. Factoring Trinomials by Grouping 6
  118. U09_L2_T1_we1 Factoring Special Products 1
  119. Factoring Special Products 2
  120. U09_L2_T1_we3 Factoring Special Products 3
  121. Solving Quadratic Equations by Factoring.avi
  122. Solving Quadratic Equations by Factoring 2.avi
  123. Solving Quadratic Equations by Factoring 3.avi
  124. Quadratic Functions 1

Arithmetic

  1. Basic Addition
  2. Addition 2
  3. Level 2 Addition
  4. Addition 3
  5. Addition 4
  6. Basic Subtraction
  7. Subtraction 2
  8. Subtraction 3: Introduction to Borrowing or Regrouping
  9. Alternate mental subtraction method
  10. Level 4 Subtraction
  11. Why borrowing works
  12. Adding Decimals
  13. Subtracting decimals
  14. Basic Multiplication
  15. Multiplication 2: The Multiplication Tables
  16. Multiplication 3: 10,11,12 times tables
  17. Multiplication 4: 2-digit times 1-digit number
  18. Multiplication 5: 2-digit times a 2-digit number
  19. Multiplication 6: Multiple Digit Numbers
  20. Multiplication 7: Old video giving more examples
  21. Mulitplication 8: Multiplying decimals (Old video)
  22. Lattice Multiplication
  23. Why Lattice Multiplication Works
  24. Division 1

Banking and Money

  1. Banking 1
  2. Banking 2: A bank's income statement
  3. Banking 3: Fractional Reserve Banking
  4. Banking 4: Multiplier effect and the money supply
  5. Banking 5: Introduction to Bank Notes
  6. Banking 6: Bank Notes and Checks
  7. Banking 7: Giving out loans without giving out gold
  8. Banking 8: Reserve Ratios
  9. Banking 9: More on Reserve Ratios (Bad sound)
  10. Banking 10: Introduction to leverage (bad sound)
  11. Banking 11: A reserve bank
  12. Banking 12: Treasuries (government debt)
  13. Banking 13: Open Market Operations
  14. Banking 14: Fed Funds Rate
  15. Banking 15: More on the Fed Funds Rate
  16. Banking 16: Why target rates vs. money supply 

Biology

  1. Introduction to Evolution and Natural Selection
  2. Intelligent Design and Evolution
  3. Evolution Clarification
  4. Natural Selection and the Owl Butterfly
  5. DNA
  6. Variation in a Species
  7. Chromosomes, Chromatids, Chromatin, etc.
  8. Mitosis, Meiosis and Sexual Reproduction
  9. Phases of Mitosis
  10. Phases of Meiosis
  11. Embryonic Stem Cells
  12. Cancer
  13. Introduction to Heredity
  14. Punnett Square Fun
  15. Hardy-Weinberg Principle
  16. Sex-Linked Traits
  17. Bacteria
  18. Viruses
  19. ATP: Adenosine Triphosphate
  20. Introduction to Cellular Respiration
  21. Oxidation and Reduction Review From Biological Point-of-View
  22. Oxidation and Reduction in Cellular Respiration
  23. Glycolysis
  24. Krebs / Citric Acid Cycle
  25. Electron Transport Chain
  26. Oxidative Phosphorylation and Chemiosmosis
  27. Photosynthesis
  28. Photosynthesis: Light Reactions 1
  29. Photosynthesis: Light Reactions and Photophosphorylation
  30. Photosynthesis: Calvin Cycle
  31. Photorespiration
  32. C-4 Photosynthesis
  33. CAM Plants
  34. Parts of a cell
  35. Diffusion and Osmosis
  36. The Lungs and Pulmonary System
  37. Red blood cells
  38. Circulatory System and the Heart
  39. Hemoglobin
  40. Anatomy of a Neuron 
Brain Teasers

  1. Liar Truthteller Brain Teaser
  2. Toggler Brain Teaser
  3. Alien Abduction Brain Teaser
  4. Brain Teaser: Blue Forehead Room
  5. Blue Forehead Room Solution
  6. Forehead Numbers Brain Teaser
CAHSEE Example Problems

  1. CAHSEE Practice: Problems 1-3
  2. CAHSEE Practice: Problems 4-9
  3. CAHSEE Practice: Problems 10-12
  4. CAHSEE Practice: Problems 13-14
  5. CAHSEE Practice: Problems 15-16
  6. CAHSEE Practice: Problems 17-19
  7. CAHSEE Practice: Problems 20-22
  8. CAHSEE Practice: Problems 23-27
  9. CAHSEE Practice: Problems 28-31
  10. CAHSEE Practice: Problems 32-34 

Calculus

  1. Introduction to Limits
  2. Limit Examples (part 1)
  3. Limit Examples (part 2)
  4. Limit Examples (part3)
  5. Limit Examples w/ brain malfunction on first prob (part 4)
  6. Squeeze Theorem
  7. Proof: lim (sin x)/x
  8. More Limits
  9. Epsilon Delta Limit Definition 1
  10. Epsilon Delta Limit Definition 2
  11. Calculus: Derivatives 1 (new HD version)
  12. Calculus: Derivatives 2 (new HD version)
  13. Calculus: Derivatives 2.5 (new HD version)
  14. Calculus: Derivatives 1
  15. Calculus: Derivatives 2
  16. Calculus: Derivatives 3
  17. The Chain Rule
  18. Chain Rule Examples
  19. Even More Chain Rule
  20. Product Rule
  21. Quotient Rule
  22. Derivatives (part 9)
  23. Proof: d/dx(x^n)
  24. Proof: d/dx(sqrt(x))
  25. Proof: d/dx(ln x) = 1/x
  26. Proof: d/dx(e^x) = e^x
  27. Proofs of Derivatives of Ln(x) and e^x
  28. Extreme Derivative Word Problem (advanced)
  29. Implicit Differentiation
  30. Implicit Differentiation (part 2)
  31. More implicit differentiation
  32. More chain rule and implicit differentiation intuition
  33. Trig Implicit Differentiation Example
  34. Calculus: Derivative of x^(x^x)
  35. Introduction to L'Hopital's Rule
  36. L'Hopital's Rule Example 1
  37. L'Hopital's Rule Example 2
  38. L'Hopital's Rule Example 3
  39. Maxima Minima Slope Intuition
  40. Inflection Points and Concavity Intuition
  41. Monotonicity Theorem
  42. Calculus: Maximum and minimum values on an interval
  43. Calculus: Graphing Using Derivatives
  44. Calculus Graphing with Derivatives Example
  45. Graphing with Calculus
  46. Optimization with Calculus 1
  47. Optimization with Calculus 2
  48. Optimization with Calculus 3
  49. Optimization Example 4
  50. Introduction to rate-of-change problems
  51. Equation of a tangent line
  52. Rates-of-change (part 2)
  53. Ladder rate-of-change problem
  54. Mean Value Theorem
  55. The Indefinite Integral or Anti-derivative
  56. Indefinite integrals (part II)
  57. Indefinite Integration (part III)
  58. Indefinite Integration (part IV)
  59. Indefinite Integration (part V)
  60. Integration by Parts (part 6 of Indefinite Integration)
  61. Indefinite Integration (part 7)
  62. Another u-subsitution example
  63. Introduction to definite integrals
  64. Definite integrals (part II)
  65. Definite Integrals (area under a curve) (part III)
  66. Definite Integrals (part 4)
  67. Definite Integrals (part 5)
  68. Definite integral with substitution
  69. Integrals: Trig Substitution 1
  70. Integrals: Trig Substitution 2
  71. Integrals: Trig Substitution 3 (long problem)
  72. Periodic Definite Integral
  73. Introduction to differential equations
  74. Solid of Revolution (part 1)
  75. Solid of Revolution (part 2)
  76. Solid of Revolution (part 3)
  77. Solid of Revolution (part 4)
  78. Solid of Revolution (part 5)
  79. Solid of Revolution (part 6)
  80. Solid of Revolution (part 7)
  81. Solid of Revolution (part 8)
  82. Sequences and Series (part 1)
  83. Sequences and series (part 2)
  84. Polynomial approximation of functions (part 1)
  85. Polynomial approximation of functions (part 2)
  86. Approximating functions with polynomials (part 3)
  87. Polynomial approximation of functions (part 4)
  88. Polynomial approximations of functions (part 5)
  89. Polynomial approximation of functions (part 6)
  90. Polynomial approximation of functions (part 7)
  91. Taylor Polynomials
  92. Exponential Growth
  93. AP Calculus BC Exams: 2008 1 a
  94. AP Calculus BC Exams: 2008 1 b&c
  95. AP Calculus BC Exams: 2008 1 c&d
  96. AP Calculus BC Exams: 2008 1 d
  97. Calculus BC 2008 2 a
  98. Calculus BC 2008 2 b &c 


California Standards Test: Algebra I

  1. CA Algebra I: Number Properties and Absolute Value
  2. CA Algebra I: Simplifying Expressions
  3. CA Algebra I: Simple Logical Arguments
  4. CA Algebra I: Graphing Inequalities
  5. CA Algebra I: Slope and Y-intercept
  6. CA Algebra I: Systems of Inequalities
  7. CA Algebra I: Simplying Expressions
  8. CA Algebra I: Factoring Quadratics
  9. CA Algebra I: Completing the Square
  10. CA Algebra I: Quadratic Equation
  11. CA Algebra I: Quadratic Roots
California Standards Test: Algebra II

  1. California Standards Test: Algebra II
  2. California Standards Test: Algebra II 
  3. CA Standards: Algebra IIivision
  4. CA Standards: Algebra II
  5. Algebra II: Simplifying Polynomials
  6. Algebra II: Imaginary and Complex Numbers
  7. Algebra II: Complex numbers and conjugates
  8. Algebra II: Quadratics and Shifts
  9. Algebra II: Shifting Quadratic Graphs
  10. Algebra ||: Conic Sections
  11. Algebra II: Circles and Logarithms
  12. Algebra II: Logarithms Exponential Growth
  13. Algebra II: Logarithms and more

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