And where do they keep their suitcases?

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As winter approaches, V-shaped flocks glide overhead as the world's birds begin their long treks to warmer climates. Humans used to have some pretty crazy theories about where birds went for winter, like the moon, or to the bottom of the ocean.

How did we learn the real story? And where DO birds go for winter? What are the longest bird migrations? How do birds store up energy for their long journey? How do birds navigate? Why do they fly in a V-shape?

Find out in this week's video!

Charles Morton's theory of birds on the moon: http://wrd.cm/1xMKc5k
Read Charles Morton's original 1703 pamphlet! http://bit.ly/1C5AKhk
The story of the stork with a spear in its neck: http://bit.ly/11PgkIs
Aristotle's theory of bird transmutation: http://bit.ly/1uwQwHX
The "barnacle goose" http://bit.ly/1C5BiUg

The Arctic tern's record-breaking migration: http://www.ncbi.nlm.nih.gov/pm....c/articles/PMC283666
The bar-tailed godwit's fat-fueled migration: https://sora.unm.edu/sites/def....ault/files/journals/
Ruby-throated hummingbird mighty migration: http://www.ncbi.nlm.nih.gov/pm....c/articles/PMC132505

The avian aerodynamics of the "flying V" http://bit.ly/1vFFlUs
The many senses that birds use to find their way: http://bit.ly/11qN9vr
How birds use magnetic fields to navigate: http://bit.ly/1r2jYLy

Produced for PBS Digital Studios

Joe Hanson - Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer
Katie Graham - Director of Photography
Andrew Matthews - Editing/Motion Graphics
Dalton Allen - Post-production intern
John Knudsen - Gaffer

Theme music:
"Ouroboros" by Kevin MacLeod

Stock images by Shutterstock

-----------
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This organic chemistry video tutorial explains the hybridization of atomic orbitals. It discusses how to determine the number of sigma and pi bonds in a molecule as well as determining if a carbon is sp, sp2, or sp3 hybridized. The full version of this video contains plenty of examples and practice problems.

Access The Full 36 Minute Video:
https://www.patreon.com/MathScienceTutor

Direct Link to The Full Video:
https://bit.ly/3iv1Zic

Organic Chemistry PDF Worksheets:
https://www.video-tutor.net/orgo-chem.html

___________________________________
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Educational video for kids about numbers. You'll have to keep on guessing numbers from 1 to 100, while we'll be writing them on a whiteboard. Don't forget to say the number out loud if you know it! You'll learn numbers in the easiest and funniest way you can imagine.

This video is part of a larger collection of videos to guess the numbers and learn them while having fun. Wonderful resource for toddlers in preschool education and school-children in primary education.

Thanks for visiting us! If you want your children to smile and learn, subscribe! :D

We only upload our own content, designed by educators so that children smile and learn while watching a video.

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It's time to learn more about the alphabet! Today kids can learn more about the letter V by hearing its sound, writing it and memorizing words with the letter in it, always in a fun and entertaining way.

This video is part of a series focusing on the letters of the alphabet, the video shows some words that start with the letter V in order to check its sound. At the end of the video children can find a sing-along to practice!

Thanks for visiting us! If you want your children to smile and learn, subscribe! :D

Why is it good for children to see Smile and Learn’s videos?

+We only upload our own content, designed by educators so that children smile and learn while watching a video.

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*If you like our videos, download “The Smart Library” now. You’ll discover more than 30 interactive games and stories for children designed by educators. The stories are based on VALUES like friendship, respect, and generosity, and our games cover all of the MULTIPLE INTELLIGENCES. All our content is in SPANISH, ENGLISH, and FRENCH.

The perfect tool to use in and out of school.

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Music video by Nicki Minaj performing Fractions (Audio). © 2021 Republic Records, a division of UMG Recordings, Inc.

http://vevo.ly/meItJ6

Maths Working Model On Fractions /Fraction Maths TLM / Maths Fraction Working Model / #mathsmodel

#mathsmodel
#mathsworkingmodel
#fractions
#learneasy
#scienceexhibition
#sciencemodel
#scienceproject

#math #maths #homeschool #mathtipsandtricks #homeschoolmath

This video walks you through 4 examples of how to change a percent into a fraction. Put the percent number over a denominator of 100 and reduce if you can!


🔴 Subscribe for more free YouTube tips: https://www.youtube.com/c/ImprovedMath

🔴 Share this video with a friend:

🔴 Check out this playlist:

✅ For business inquiries contact me at improvedmath@gmail.com

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Improved math is a channel created to provide additional instruction on essential math concepts. I’m passionate about math and I know first-hand how important math concepts are in the real world.

Teachers, parents, guardians, homeschoolers, and students can use these videos to help reinforce math skills. These math videos are designed to help teach yourself math or provide self-study math tools to assist when additional instruction is needed. Teaching math and learning math has changed the way many students learn in this virtual environment. Having on-demand math videos can provide math tutoring needed when children are not able to get help from their teachers after school hours or when trying to do math at home.

The library of math tutorials that I create can also be used as supplemental instructional material for homeschool math. Each full-length video comes with a subsequent knowledge check or math practice problems which serve as a virtual math topic worksheet to test your understanding of each skill. These videos can be paused to work out the problems on your own, then unpaused to check your answers. All of these videos can be found under the Knowledge Check playlist.

I also have a library of shorter videos (less than 1 minute in length - shorts) that are quick math tips and tricks on basic math topics. Some of these short math help videos include problems that you can work on yourself and submit your answers in the comments. They are all listed under my Math Tips and Tricks playlist.

Improved math is creating more videos every day to cover topics from 4th grade, 5th grade, 6th grade, and 7th-grade math. The videos focus on fractions, basic math operations, geometry, and ratios but more topics are being added all the time. If there is a specific topic you would like to see covered, drop me a comment in one of my videos and let me know!

Free math help videos will be posted every Thursday and Friday. For additional math resources, check out my math help website at improvedmath.com where I post math worksheets and answers along with additional context on math basics.



Thanks for watching my channel.

I min lille serie af videoer med gode og nemme lege til matematiktimerne, kommer her 3 tips til lege med terninger.
De er lige til at gå til, og det eneste du skal bruge er to terninger, ternet papir og en tush.
Husk også at se mine videoer "Leg med mønter" og Leg med Centicubes" lige her:
https://www.youtube.com/watch?v=mIp0qYqApV8&t=
https://www.youtube.com/watch?v=fpqomhdlHoU&t=

Der er mange flere værksteder på min hjemmeside, som du kan tjekke ud. Og følg mig gerne, så bliver jeg glad.
Kh Anette K
https://facebook.com/anettekmatematik/
https://instagram.com/anettekmatematik/
https://www.youtube.com/channe....l/UCR8PqEuBE7OlORn2y
https://anettekmatematik.com/
#legoglæring #matematikspil #lærmatematik

What exactly are Personality Disorders? How can they be diagnosed? Can we prevent some of them? In this episode of Crash Course Psychology, Hank gives us the down-low on things like Ego-Dystonic and Ego-Syntonic Disorders, Borderline and Antisocial Personality Disorders, and the potential biological, psychological, and social roots of these disorders.

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych!

--
Chapters:
Introduction: Personality Disorders 00:00
Ego-Dystonic vs. Ego-Syntonic Disorders 00:44
Personality Disorders 1:12
Modern Classifications of Personality Disorders 2:03
Three Clusters of Personality Disorders 2:23
Overlapping Traits, PDNOS, & the Dimensional Model of Personality Disorders 3:35
Borderline Personality Disorder (BPD) 4:31
Anti-Social Personality Disorder (Psychopathy & Sociopathy) 5:29
Early Indicators & Genetic Factors of Anti-Social Personality Disorder 6:54
Neural Basis of Anti-Social Personality Disorder 7:58
Treatments for Anti-Social Personality Disorder 9:01
Review & Credits 10:07
--
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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In which John Green teaches you about one of the least funny subjects in history: slavery. John investigates when and where slavery originated, how it changed over the centuries, and how Europeans and colonists in the Americas arrived at the idea that people could own other people based on skin color.

Slavery has existed as long as humans have had civilization, but the Atlantic Slave Trade was the height, or depth, of dehumanizing, brutal, chattel slavery. American slavery ended less than 150 years ago. In some parts of the world, it is still going on. So how do we reconcile that with modern life? In a desperate attempt at comic relief, Boba Fett makes an appearance.

Learn more about the Transatlantic Slave Trade in Episode #1 of Crash Course Black American History here: https://youtu.be/S72vvfBTQws

Chapters:
Introduction 00:00
The Atlantic Slave Trade 0:30
The History of European Slave Trade 1:12
How Africans Became Enslaved 1:54
Living Conditions of Enslaved People 2:55
An Open Letter to the Word 'Slave' 5:41
What is the Definition of Slavery? 6:45
Other Models of Slavery: Greek, Roman, Judeo-Christian, and Muslim 7:26
Credits 10:35

Resources:
Inhuman Bondage by David Brion Davis: https://bit.ly/3vdSdTX
Up From Slavery by Booker T Washington: https://bit.ly/3JJlxH4

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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Russia went and had a revolution in 1917 and cinema was a big part of its aftermath. Even though film stock was hard to come by, we saw the first film school started, and the study of film became hugely important. Russian filmmakers started trying to understand the power of the cut itself, thus developing a theory of filmmaking based solely around the juxtaposition of images: Soviet Montage. In this episode of Crash Course Film History, Craig talks us through some of the filmic things going on in post-revolution era Russia.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Want to know more about Craig?
https://www.youtube.com/user/wheezywaiter

The Latest from PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***
Movies Discussed in this episode:
Battleship Potempkin: 1925 - Dir. Sergei Eisenstein

Man with a Movie Camera: 1929 - Dir. Dziga Vertov

Harry Potter and the Half-Blood Prince: 2009 - Dir. David Yates
Property of Warner Bros. Pictures

Psycho: 1960 - Dir. Alfred Hitchcock
Property of Paramount Pictures

The Good, The Bad, and The Ugly: 1966 - Dir. Sergio Leone
Property of 20th Century FOX

Youth of Maxim: 1935 - Dir. Grigori Kozintsev, Leonid Trauberg

***

Want to find Crash Course elsewhere on the internet?
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In which John relates a condensed history of India, post-Indus Valley Civilization. John explores Hinduism and the origins of Buddhism. He also gets into the reign of Ashoka, the Buddhist emperor who, in spite of Buddhism's structural disapproval of violence, managed to win a bunch of battles.

Chapters:
Introduction 00:00
The Vedas 0:55
The Caste System 1:33
Dharma 2:40
Samsara, Moksha, and Karma 3:33
Buddhism 5:18
Chutes and Ladders 8:04
Ashoka 9:18
Hinduism 11:04
Credits 11:47

Resources:
India: A History by John Keay: https://bit.ly/3uEgVxE
The Bhagavad Gita: https://bit.ly/3O8A96l
The Bhagavad Gita, Upanishads, and Rig Veda, all-in-one edition: https://bit.ly/3xqP85N

Credits:
Executive Producer: John Green
Producer: Stan Muller
Writer and historian: Raoul Meyer
Script Supervisor: Danica Johnson
Music: Jason Weidner

Thought Bubble is a product of the Smart Bubble Society: http://dft.ba/-smartbubble
the Smart Bubble Society is:
Suzanna Brusikiewicz
Jonathon Corbiere
Nick Counter
Allan Levy
James Tuer
Adam Winnik

Set Design: Donna Sink
Props: Brian McCutcheon

Photos:
David Shankbone
ClipWorks

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Want to find Crash Course elsewhere on the internet?
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CC Kids: http://www.youtube.com/crashcoursekids

After weeks of discussion of human reproduction, today we arrive at the main event: THE SEX. Hank explains the four phases of the human sexual response, how fertilization happens, and how different contraceptive methods work.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

Download it here for Apple Devices: https://apple.co/3d4eyZo
Download it here for Android Devices: https://bit.ly/2SrDulJ

Chapters:
Introduction 00:00
Four Phases of Human Sexual Response Cycles 0:53
Fertilization 3:01
Contraceptive Methods 6:59
Review 8:58
***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks

--

Want to find Crash Course elsewhere on the internet?
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How to Scare a Ghost
by Jean Reagan
Illustrated by Lee Wildish
Read by Let's Read Stories

From the creators of the New York Times bestsellers How to Catch Santa and How to Babysit a Grandpa comes a silly (and not-too-spooky) send-up of Halloween...and ghosts!

Who says ghosts get to have all the fun on Halloween? In this humorous new addition to Jean Reagan and Lee Wildish's bestselling How to... books, the kids are in charge! But in order to scare a ghost, you might have to find one first. Guided by a tongue-in-cheek instructional style, two children show young readers how to set the stage for a spooktacular Halloween by carving pumpkins, playing games, and even reading scary stories. Has a ghost showed up? Great! Now the fun--er, the scaring--can really begin. Filled with charming role-reversal humor, creative ideas, and lots of holiday spirit, How to Scare a Ghost is sure to delight kids, parents, and things that go bump in the night.
Click here to purchase How to Scare a Ghost: https://www.amazon.com/How-Sca....re-Ghost-Jean-Reagan

Forget finding common denominators when adding dissimilar fractions - this way is much faster and easier. This video also looks at how to deal with mixed numbers and simplification.

To donate to the tecmath channel:https://paypal.me/tecmath

To support tecmath on Patreon: https://www.patreon.com/tecmath

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Get your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/simplehistory. It's an exclusive offer for our viewers! Start your free trial today. MagellanTV is a new kind of streaming service run by filmmakers with 3,000+ documentaries! Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/explore/history

‘The Giant Killer’, as his comrades-in-arms called him, was the smallest man to serve in the military of the United States.
With a height of only 4 feet 9 inches, and weighing just 97Ibs, he wasn’t even supposed to enter the force.
The Army was his life’s dream, though, and he was determined to make it happen contrary to other people’s opinions.


Become a Simple History member: https://www.youtube.com/simplehistory/join
Support us on Patreon: https://www.patreon.com/simplehistory

Copyright: DO NOT translate and re-upload our content on Youtube or other social media.

SIMPLE HISTORY MERCHANDISE

Get the Simple History books on Amazon:

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T-Shirts

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Simple history gives you the facts, simple!

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Credit:
Created by Daniel Turner (B.A. (Hons) in History, University College London)
Script: Dejan Milivojevic
Narrator:

Chris Kane
https://vocalforge.com/

Music Credit:

Clash Defiant Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/



Sources:
https://pastebin.com/XXeaN4YJ

Work out fractions of an unknown amount with this fast math lesson. This lesson explains the role of the denominator and numerator (bottom and top numbers) in a fraction to show how to solve these types of math problems quickly and easily. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
To support tecmath on Patreon: https://www.patreon.com/tecmath
To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

The vowel i can make a short /ĭ/ sound or a long /ī/ sound. Learn about the vowel i with Reya the Red Panda from Khan Academy Kids!

Visit us at http://www.khankids.org to learn more about Khan Academy Kids, a free educational app for preschool through 2nd grade.

Available on Google Play, Apple, and Amazon app stores:
➡️ http://khan.co/KhanKids-YT-Google
➡️ http://khan.co/KhanKids-YT-Apple
➡️ http://khan.co/KhanKids-YT-Amazon

You can also access other videos on vowels and vowel teams on our Vowels and Vowel Teams playlist here: http://khan.co/KhanKids-Vowels.

Subscribe to our channel for more videos like this.

Start building today with Bria https://go.bria.ai/447jycZ
🚀 Become an AI Master – All-in-one AI Learning https://aimaster.me/pro

In this video I ditch GPT-4o’s style chaos and, with a licensed, copyright-safe generative AI platform, train a light model on my images to auto-spawn consistent character variants—hero, rival, sorceress—on demand, no code. See rapid fine-tuning, generative fill, background removal, vector export, stable style transfer, API and SDK hooks, AWS integration, ComfyUI nodes, 3D asset pipeline, indie game dev workflow, automated illustration, branded visuals, consistent AI art, content creator productivity, generative AI 2025, copyright-safe images, licensed dataset, image generator, no-code character design.

Khan Academy Kids, nuestra premiada aplicación para niños de 2 a 8 años, ¡ahora incluye 80 libros en español e inglés! Con estos nuevos libros, y su función de lectura en voz alta, los niños se divertirán practicando y aprendiendo español. Mira el siguiente video para aprender sobre estos libros y sobre cómo Khan Academy Kids puede ayudar a tus hijos a leer, jugar, aprender y crecer.

¡Descarga ahora la aplicación GRATIS!

http://khan.co/KhanKids-YT-Apple
http://khan.co/KhanKids-YT-Google
http://khan.co/KhanKids-YT-Amazon