The two annual TED conferences, in Long Beach/Palm Springs and Edinburgh, Scotland, bring together the world's most fascinating thinkers and doers, who are challenged to give the talk of their lives (in 18 minutes or less). TED Talks began as a simple attempt to share what happens at TED with the world. Under the moniker ideas worth spreading, talks were released online. They rapidly attracted a global audience in the millions. Indeed, the reaction was so enthusiastic th...
TED is a nonprofit devoted to Ideas Worth Spreading. It started out (in 1984) as a conference bringing together people from three worlds: Technology, Entertainment, Design. Since then its scope has become ever broader. Along with two annual conferences -- the TED Conference in Long Beach and Palm Springs each spring, and the TEDGlobal conference in Edinburgh UK each summer -- TED includes the award-winning TED Talks video site, the Open Translation Project and TED Conver...
Comparing Population Proportions 1
Making inferences based on sample data. Confidence intervals. Margin of error. Hypothesis testing.
Here's a chance to see if you can combine what you know to add up resistance in series AND in parallel. Rishi is a pediatric infectious disease physician and works at Khan Academy.
Videos about medicine and the healthcare system
A conversation between Dr. Elizabeth Macaulay-Lewis and Dr. Steven Zucker in front of Two Royal Figures, Iran (Saljuq period), mid 11th - mid 12th c. , painted and gilded stucco (Metropolitan Museum of Art).
Introduction to credit default swaps and why they can be dangerous
Basics of how a mortgage back security works
What started out as a creative way to spread risk ended up fueling a monster housing bubble. This tutorial explains what mortgage-backed securities are and how they work.
Ancient Greek Temples at Paestum: Hera I, c. 560-530 B. C. E. , Archaic Period; Hera II, c. 460 B. C. E. , Classical Period; Temple of Minerva, c. 500 B. C. E. Archaic Period. A conversation with Dr. Beth Harris and Dr. Steven Zucker
Humans have been making art for tens of thousands of years, long before there was writing. Why was Egyptian art obsessed with death? Why did the ancient Greeks seek the perfect human form? How did the ancient Romans use art as state propaganda? Why was th
Dr. David Agus discusses thinking systemically about cancer and other things
One Step Equations
Like the Why of algebra and Super Yoga plans tutorials, we'll introduce you to the most fundamental ideas of what equations mean and how to solve them. We'll then do a bunch of examples to make sure you're comfortable with things like 3x – 7 = 8. So r
The probability of getting exactly 2 heads when flipping three coins. Thinking about this by visualy depicting all of the outcomes.
Basics of probability and combinatorics. This tutorial will apply the permutation and combination tools you learned in the last tutorial to problems of probability. You'll finally learn that there may be better investments than poring all your money int
Solving Equations 2
You've been through Equation examples for beginners and are feeling good. Well, this tutorial continues that journey by addressing equations that are just a bit more fancy. By the end of this tutorial, you really will have some of the core algebraic too
Understanding how changes in foreign ownership of assets effects balance of payments
Balance of payments. Current account. Capital account. Currency reserves and speculative attacks. In this tutorial we will see how trade and assets (including money) changing hands are fundamentally intertwined. Not only that, but we will see how this can
Decimal Place Value 2
Understanding decimals conceptually, using operations with decimals, rounding and estimating with decimals, and converting decimals.
More scientific notation examples
Understanding and solving exponents without algebra.
alcohols, ethers, epoxides, thiols, sulfides. In this tutorial, Jay shows how to synthesize alcohols using sodium borohydride, lithium aluminum hydride, and grignard reagents.
Absolute Value and Number Lines
Extending our understanding of numbers below 0. Thinking about absolute distance from 0.