Inside OKCupid: The math of online dating - Christian Rudder | TED-Ed. Unlocking fractals: An exercise in pure mathematics. “This shape here just came out of an exercise in pure mathematics. Bottomless wonders spring from simple rules, which are repeated without end.’ This poetic definition of fractal geometry is the closing note of Benoit Mandelbrot’s 2010 TED Talk ‘Fractals and the art of roughness.’ And while this definition touches on the extraordinary nature of these incredibly complex and infinite patterns, there is no better way to understand fractals than by seeing them.
In this TED Talk and TED-Ed Lesson pairing, we will take a closer look at the unbelievably beautiful world of fractal geometry. Fractals are infinitely complex patterns that are self-similar across different scales, created by repeating a simple process over and over in an ongoing feedback loop. Confused yet? We’ll start our exploration of fractals with the man who coined the term: Benoit Mandelbrot. Now that you’ve been primed on fractals, let’s take a look at them in action. How to teach a young introvert. Susan Cain sticks up for the introverts of the world.
In the U.S., where one third to one half the population identifies as introverts, that means sticking up for a lot of people. Some of them might be data engineers overwhelmed by the noise of an open-floor-plan office. Others might be lawyers turning 30, whose friends shame them for not wanting a big birthday bash. But Cain particularly feels for one group of introverts: the quiet kids in a classroom.
Cain remembers a childhood full of moments when she was urged by teachers and peers to be more outgoing and social — when that simply wasn’t in her nature. We gave Cain a call to talk about how schools, both right now and far off in the future, could better care for the needs of introverted students. Photo by Tom Woodward/Flickr. What kind of response did you get to the part of your TED Talk about the education system and how it isn’t optimized for introverts?
In general, teachers should avoid setting social standards for what is normal. Why we love repetition in music - Elizabeth Hellmuth Margulis. The science of setting goals. It’s the time of year when optimism strikes anew and we think to ourselves: our New Year’s resolutions will totally work out this time. Never mind that we abandoned them by Valentine’s Day last year. And the year before. And, well, you know the drill. But what if this year really could be different? There’s a science to setting goals. Choose a goal that matters, not just an easy win. Our brains are wired to love rewards, so we often set simple goals that make it easy to check off boxes. A meaningful goal — one that truly inspires you to change — requires going deeper. Focus on the process, not the outcome. When we set goals, it’s easy to fixate on that magical ending when we’ve reached the goal and everything is better. “People often get lost thinking they have to change everything all at once,” says McGonigal.
“You can make very, very small changes that are consistent with your big goals without having to understand how you’re going to get to the endgame,” says McGonigal. The Atlantic slave trade: What too few textbooks told you - Anthony Hazard | TED-Ed. The Atlantic slave trade sent slaves to various locations in the world. What effect did this forced migration have on these areas? Visit the Mariner’s Museum Captive Passage website. Gain some more perspective on how the slave trade affected the Americas. Then read the transcript or listen to this 15 Minute History podcast and find out more. Are you a visual learner? View a graphic about the slave trade and destinations here.
Browse the In Motion: the African-American Migration Experience site and find out how African–American migrations help shape the culture, economics, and history of the Americas. Gain a greater understanding of life aboard the slave ships at PBS. What do North America, the Caribbean, Brazil, Europe and Africa all have in common? Are their myths and misconceptions about slavery? The great conspiracy against Julius Caesar - Kathryn Tempest | TED-Ed. Non-textual sources can also help us understand Marcus Brutus better. Coins in particular enable us to see how Brutus presented his political agenda at the time. You can look at some of Brutus’ coins here. What lasting messages did these coins leave with the imagery inscribed upon them? Music and math: The genius of Beethoven - Natalya St. Clair. Natalya would like to acknowledge the amazing support of her friends Wendy Cho, Carolyn Meldgin, Antoinette Evans, Will McFaul, Aaron Williams, and her fantastic students and colleagues at Countryside School and Math Zoom, especially Chris Antonsen, Kim File, Harold Reiter, Jeffrey Huang, Kashyap Joshi, and Priscilla Wang.
Frequency and Music Our abilities to recognize patterns in music using sine waves help to “see” innovative ways of problem-solving. For teachers, a great introduction to teaching frequency theory can be found here ( Students might enjoy discussing the activity found in NCTM Illuminations to explore more with the mathematics of music. Sound travels through energy in the form of wavelengths, which can be described using the function of the form f(x) = A sin (B x). Frequency theory has many interesting and unique properties, some of which lead to harmonic analysis in upper-level math classes.
Should all students learn a second language? One TED-Ed Club member advocates... Yash Khatavkar, Fridley High School TED-Ed Club Member and high school senior, wants to see a change in the way schools approach language instruction. As a child who wanted to learn Spanish, Yash took issue with the fact that his elementary school only offered one hour of Spanish instruction per week. In his final TED-Ed Club presentation, Yash explores the positive benefits of multilingualism, and advocates for earlier and better language instruction in schools. What was your TED-Ed Club presentation about?
My presentation was about language. I focused on how language acquisition has become more important to us and I talked about how it is taught. The main point I aimed to make is that the way schools teach language is ineffective. Fridley High School’s first TED-Ed Club Meeting How did you get interested in pursuing this subject? I actually got the idea for my presentation from a friend. Why do you think people should learn to speak more than one language? The pharaoh that wouldn't be forgotten - Kate Narev | TED-Ed. A female who is considered one of Egypt’s most forward thinking pharaohs?
Hatshepsut was just that woman. Read here how Egypt grew and was at peace during her years of rule. Hatshepsut actually took on many of the duties similar to the king of Egypt during her reign. Read National Geographic’s story, The King Herself and discover more about her lineage, accomplishments, and struggles. Why might people believe there was an attempt to erase her from the history of Egypt? Was there a darker side to Hatshepsut that no one suspected? Hatshepsut left behind beautiful buildings and temples meant to represent her and her reign. A long search was made to find the remains of Hatshepsut. At what moment are you dead? - Randall Hayes | TED-Ed.
How teachers can best use TED Talks in class. What happens when a teacher mixes Madame Bovary and a TED Talk? Good things, actually. Photo: iStockphoto By Olivia Cucinotta My high school English class had just finished reading Madame Bovary, and we were all confused. (For those of you who have not read it, please skip to paragraph two. Spoiler alert!) Emma Bovary, a listless housewife in search of the passionate love she’s read about in books, has many sordid affairs, falls deeply into debt and kills herself by swallowing arsenic, and her ever-faithful and terribly dull husband Charles dies a while later of a broken heart, and their daughter, upon finding her father dead, is sent to work in a cotton mill.
That night for homework, our only assignment was to watch a TED Talk: “Why we love, why we cheat” by anthropologist Helen Fisher. I didn’t realize what my teacher was doing until class discussion the next day. “But then what about Charles? “Well he wasn’t intense, and he wasn’t possessive. “He died for love.” A brief history of melancholy - Courtney Stephens. Robert Burton attempted to gather the totality of human thinking on sadness and melancholy in his 1621 book The Anatomy of Melancholy. Similar to the approach in this video, Burton gathered widely in thinking about the subject. This includes quotes from thinkers and literature, anatomical drawings, and Burton’s own meditations.
Check this page of quotes by Robert Burton for more insight into his thinking! Burton was fascinated by the ancient humoral medical system, from which the word melancholy is derived: Black bile = melancholia. Those with an excess of this humor were expected to be serious and despondent. Those with an excess of yellow bile were described as choleric – quick to anger and restless. A person with an excess of phlegm or phlegma, the third humor, was thought to tend towards laziness and apathy. In the Buddhist worldview, suffering has always been regarded as part of the fundamental fabric of reality. Sooner or later, everyone gets the blues. Quantum mechanics 101: Demystifying tough physics in 4 easy lessons.
Ready to level up your working knowledge of quantum mechanics? Check out these four TED-Ed Lessons written by Chad Orzel, Associate Professor in the Department of Physics and Astronomy at Union College and author of How to Teach Quantum Physics to Your Dog. 1. Particles and waves: The central mystery of quantum mechanics One of the most amazing facts in physics is that everything in the universe, from light to electrons to atoms, behaves like both a particle and a wave at the same time. But how did physicists arrive at this mind-boggling conclusion?
In this lesson, Orzel recounts the string of scientists who built on each other’s discoveries to arrive at this ‘central mystery’ of quantum mechanics. 2. Austrian physicist Erwin Schrödinger, one of the founders of quantum mechanics, posed this famous question: If you put a cat in a sealed box with a device that has a 50% chance of killing the cat in the next hour, what will be the state of the cat when that time is up? 3. 4. The 2,400-year search for the atom - Theresa Doud | TED-Ed. Ernest Rutherford Although Ernest Rutherford is well known for his discovery of the nucleus, he did a lot of other research and experiments into topics other than the atom. He started his career studying electricity and magnetism and it wasn’t until he left his home of New Zealand and moved to Cambridge, England that he started working with the atom. Working under J.J. Thomson at Cambridge University, Rutherford investigated electrical conduction in gases using X-rays. When radioactive atoms were discovered in the late 1890s, he switched his experiment to use radioactivity instead of X-rays to initiate electrical conduction in his gases.
In 1911 after returning to England, Rutherford conducted his most famous experiment with alpha particles and gold foil which lead to his discovery of the nucleus. Where are the Electrons? After Rutherford discovered the nucleus, Neils Bohr (another of J.J. Ed launches an interactive periodic table with a video for every element. In 1864, Dimitri Mendeleev published the first periodic table that organized all the known elements in the world. This tool was groundbreaking for many reasons–including the fact that Mendeleev planned with incredible foresight, leaving space for any new elements that would be discovered beyond his time.
The history of the periodic table is fascinating, but If you’ve ever taken a chemistry class, you know that memorizing those elements and understanding their properties can be difficult! To help provide a refresher and a study aid of sorts, TED-Ed collaborated with Brady Haran, best known for his YouTube channel Numberphile and his extensive video coverage of the periodic table, to create a clickable periodic table with videos on every element. CLICK HERE to visit the table and find out fun facts on all your favorite elements, from Hydrogen to Ununennium and beyond. Getting started as a DJ: Mixing, mashups and digital turntables - Cole Plante. Film guru gives students tips on filming presentations.
When TED first started, the conference consisted of a small group of people sharing ideas in a theater in Monterey, California. And in those early years, that’s basically where the ideas stayed. As TED continued to grow, the folks running it realized that these great ideas deserved to be shared with the world. And what better way to spread these ideas than to film them and make them available for free online for everyone to see? Within TED-Ed Clubs, we encourage students to capture their big ideas on video so that they can also share them with the world. While filming a presentation can initially seem like a daunting task, we called in TED Production Lead, Angela Cheng, to help TED-Ed Clubs get comfortable behind the camera. Angela hard at work. Angela guided TED-Ed Club Members and Facilitators from Kansas, England, Argentina, India and New Jersey through a 10-step plan for filming a presentation, no matter what type of equipment, space, or editing materials you might have available.
Rethinking thinking - Trevor Maber. An excellent way to better understand the Ladder of Inference is to work in a small group and talk about a pattern of behavior that everyone can relate to. Some examples (in addition to the parking lot example) include: someone cutting in front of you in a line at the store; a friend or family member who is always annoyingly late; or someone who leaves you disappointed because he/she breaks more promises than he/she keeps. As you each share your experience, focus on what assumptions are at play, the conclusions you are each drawing from those assumptions, and what emotions you feel as a result. What are you seeing and learning as you hear how different everyone’s ladder can be? On one half of a sheet of paper, draw your own version of a ladder (make sure it has 7 rungs!)
And label it with the terms that have been presented. On the other half of the paper, answer the following three questions to help you recognize when you are your own Ladder of Inference. Myths and misconceptions about evolution - Alex Gendler | TED-Ed. How does cancer spread through the body? - Ivan Seah Yu Jun | TED-Ed. Cue the visuals: New Yorker cartoonist and TED-Ed animator host a TED-Ed Club... The science of Interstellar: 5 TED-Ed Lessons to help you understand the film. How to understand power - Eric Liu | TED-Ed. The history of keeping time - Karen Mensing. How big is a mole? (Not the animal, the other one.) - Daniel Dulek. Schrödinger's cat: A thought experiment in quantum mechanics - Chad Orzel | TED-Ed.
What in the world is a lunar eclipse tetrad? A glimpse of teenage life in ancient Rome - Ray Laurence. How the Berlin Wall fell | TED-Ed. 5 TED speakers and their TED-Ed Lessons. How teachers can best use TED Talks in class. What did dogs teach humans about diabetes? - Duncan C. Ferguson | TED-Ed. School’s back! TED-Ed staff’s favorite back to school traditions. The past, present and future of the bubonic plague - Sharon N. DeWitte | TED-Ed. What light can teach us about the universe - Pete Edwards | TED-Ed. How to start a TED-Ed Club. Questions no one knows the answers to - Chris Anderson.
Video: “The Future Will Not be Multiple Choice” Vampires, sleep paralysis and more: 5 very spooky TED-Ed lessons. Blog Archive » The misunderstood grizzly: Three experts discuss why brown bea... Blog Archive » One physicist’s journey from student to scientist (and how vid... The family structure of elephants - Caitlin O'Connell-Rodwell. Da Vinci's Vitruvian Man of math - James Earle.