Check out our Patreon page: https://www.patreon.com/teded

View full lesson: http://ed.ted.com/lessons/how-....speaking-multiple-la

It’s obvious that knowing more than one language can make certain things easier — like traveling or watching movies without subtitles. But are there other advantages to having a bilingual (or multilingual) brain? Mia Nacamulli details the three types of bilingual brains and shows how knowing more than one language keeps your brain healthy, complex and actively engaged.

Lesson by Mia Nacamulli, animation by TED-Ed.

What might it feel like to invent calculus?
Help fund future projects: https://www.patreon.com/3blue1brown
An equally valuable form of support is to simply share some of the videos.
Special thanks to these supporters: http://3b1b.co/lessons/essence-of-calculus#thanks

In this first video of the series, we see how unraveling the nuances of a simple geometry question can lead to integrals, derivatives, and the fundamental theorem of calculus.

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These animations are largely made using manim, a scrappy open source python library: https://github.com/3b1b/manim

If you want to check it out, I feel compelled to warn you that it's not the most well-documented tool, and it has many other quirks you might expect in a library someone wrote with only their own use in mind.

Music by Vincent Rubinetti.
Download the music on Bandcamp:
https://vincerubinetti.bandcam....p.com/album/the-musi

Stream the music on Spotify:
https://open.spotify.com/album..../1dVyjwS8FBqXhRunaG5

If you want to contribute translated subtitles or to help review those that have already been made by others and need approval, you can click the gear icon in the video and go to subtitles/cc, then "add subtitles/cc". I really appreciate those who do this, as it helps make the lessons accessible to more people.

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3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted about new videos, subscribe, and click the bell to receive notifications (if you're into that).

If you are new to this channel and want to see more, a good place to start is this playlist: http://3b1b.co/recommended

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This physics video tutorial discusses the simple harmonic motion of a pendulum. It provides the equations that you need to calculate the period, frequency, and length of a pendulum on Earth, the Moon, or another planet. This video contains plenty of examples and practice problems.

Full 1 Hour 17 Minute Video - Patreon:
https://www.patreon.com/MathScienceTutor

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

More Physics Videos + Worksheets:
https://www.video-tutor.net/ph....ysics-basic-introduc

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Join The Membership Program:
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Full 1 Hour 17 Minute Video:
https://www.youtube.com/watch?v=flIOH6OP7G4

Physics 1 Final Exam Review:
https://www.youtube.com/watch?v=CwkhvFlNFp0

This physics video tutorial explains how to solve series and parallel circuits. It explains how to calculate the current in amps through each resistor and the voltage in volts across each resistor with three resistors in series and parallel combination using a few simple formulas including ohm's law. Parallel resistors form a current division circuit and series resistors form a voltage division circuit. This video also explains how to calculate the electric power delivered by the battery in watts and the power absorbed by the resistors.

Resistors In Series:
https://www.youtube.com/watch?v=9z53qVQjasU

Resistors In Parallel:
https://www.youtube.com/watch?v=SYrOiQs3X2U

Series and Parallel Circuits - Light Bulb Brightness:
https://www.youtube.com/watch?v=NjgxXcBfIII

Equivalent Resistance of Complex Circuits:
https://www.youtube.com/watch?v=kjW4H3fKi8o

How To Solve DC Circuits:
https://www.youtube.com/watch?v=eFlJy0cPbsY

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Voltage Divider Circuit:
https://www.youtube.com/watch?v=JGXdi7XcQi8

Current Dividers:
https://www.youtube.com/watch?v=PpfOH_uBKCw

Parallel Circuit Challenge Problem:
https://www.youtube.com/watch?v=y-gwr8LCHKo

Kirchhoff's Current Law:
https://www.youtube.com/watch?v=Q39xQUlTGew

Kirchhoff's Voltage Law:
https://www.youtube.com/watch?v=6F_rmZ1nXFQ

DC Circuits Review:
https://www.youtube.com/watch?v=wejz5s31Cts

____________________________
KCL and KVL Circuit Analysis:
https://www.youtube.com/watch?v=2Zu3ppq3n8I

Thevenin's Theorem - Circuit Analysis:
https://www.youtube.com/watch?v=zTDgziJC-q8

Norton's Theorem - Circuit Analysis:
https://www.youtube.com/watch?v=-kkvqr1wSwA

Superposition Theorem:
https://www.youtube.com/watch?v=EX52BuZxpQM

Maximum Power Transfer:
https://www.youtube.com/watch?v=8CA6ZNXgI-Y

Physics PDF Worksheets:
https://www.video-tutor.net/ph....ysics-basic-introduc

Educational video for children that talks about plants, including plant classification, photosynthesis and the parts of a plant. To begin, we can classify plants into two types: plants without flowers, called cryptogams and flowering plants, called phanerogams. The main characteristic of cryptogams is that they don't have flowers and we cannot easily distinguish the parts that form them because the root, the stem and leaves are not very well defined. Phanerogams are flowering plants. The reproduction of these plants is usually sexual, which means that it requires a female and a male reproductive cell to come together. Phanerogams always reproduce by seeds. In addition, it is important to remember that plants do photosynthesis. Photosynthesis is a process that plants do to produce their own food. In the process of photosynthesis the plant transforms water, sunlight and carbon dioxide into oxygen. Finally, we will learn the parts of the plant. One of them is the root, which is the part below the ground. Its functions are supporting the plants and absorbing water and mineral salts. The stem gives stability to the plants, transports water and mineral salts absorbed by the roots, and distributes the food produced by photosynthesis throughout the plant. Leaves grow from the stem and are green in color due to the pigment called chlorophyll. Plants use them to breathe and photosynthesize.

This video is a very useful and interesting resource for children. It is perfect for children to learn all about plants. It is an excellent video for primary education.

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If you like our videos, download Smile and Learn now. You’ll discover thousands of activities for children aged 3 to 12 years, all designed by educators. We have hundreds of games, interactive stories and videos in five languages: English, Spanish, Portuguese, Italian, Turkish and French. Try a month for free and start the adventure!

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Today, Caroline and Sophie start Circle Time with a fun "Show & Tell" featuring character art we’ve received from kids. Great work, everyone! Learn how to draw Sandy the Dingo from Khan Academy Kids with Kim Ferrari, our lead animator. An animator is someone who draws, and makes those drawings move. Draw with Kim as she explains Sandy’s structure and illustrates the techniques that create her face. Practice drawing to make your own Sandy.

Are your kids ready to draw Sandy? Submit your drawing here: http://khan.co/KhanKids-SubmitYourArt. For more Show and Tell submission ideas, check out our list here: http://khan.co/KhanKids-ShowAndTell.

Looking for more kid-friendly activities? Don’t miss our Printables page, here:
http://khan.co/KhanKids-Printables.

Learn more about Khan Academy Kids, our free educational app for children ages 2-7, at http://www.khankids.org.

Available on Apple, Google Play, and Amazon app stores:

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

Subscribe to our channel so you don’t miss a single resource from Khan Academy Kids, and access all of our Circle Time videos on our Circle Time Playlist! http://khan.co/KhanKids-CircleTimePlaylist.

Questions or ideas for Circle Time? Reach our team at khankids@khanacademy.org.

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/sc....ience/ap-biology/her

How homologous chromosomes separate into two sets. Prophase I, metaphase I, anaphase I, and telophase I.

Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cellular-division/v/phases-of-meiosis-ii?utm_source=YT&utm_medium=Desc&utm_campaign=mcat

Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cellular-division/v/comparing-mitosis-and-meiosis?utm_source=YT&utm_medium=Desc&utm_campaign=mcat

MCAT on Khan Academy: Go ahead and practice some passage-based questions!

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channe....l/UCDkK5wqSuwDlJ3_nl
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us

This general chemistry video tutorial focuses on avogadro's number and how it's used to convert moles to atoms. This video also shows you how to calculate the molar mass of a compound and how to convert from grams to moles. This video contains plenty of examples, notes, and practice problems that you help you complete your next worksheet assignment.

Introduction to Moles:
https://www.youtube.com/watch?v=EowJsC7phzw

How To Calculate The Molar Mass:
https://www.youtube.com/watch?v=c_zHROisdP4

How To Convert Grams to Moles:
https://www.youtube.com/watch?v=irYPta9G_sw

How To Convert Moles to Grams:
https://www.youtube.com/watch?v=Bj3fr5pEn7U

Moles to Atoms Conversion:
https://www.youtube.com/watch?v=mpHQZ1PrkUI

Grams to Molecules Conversion:
https://www.youtube.com/watch?v=Ch16s4kYH1Q

_________________________________
Grams to Atoms:
https://www.youtube.com/watch?v=RFCtPjZ4Vzk

Moles, Atoms, & Grams Conversions:
https://www.youtube.com/watch?v=i1EPgeu_fJ8

How To Balance Chemical Equations:
https://www.youtube.com/watch?v=iUARzSxcKzk

Stoichiometry - Basic Introduction:
https://www.youtube.com/watch?v=7Cfq0ilw7ps

Avogadro's Number:
https://www.youtube.com/watch?v=74-X94OP2XI

_________________________________
Limiting Reactant Problems:
https://www.youtube.com/watch?v=IWtkhAv4RTo

Excess Reactant Problems:
https://www.youtube.com/watch?v=-7UloVZFG00

Theoretical & Percent Yield:
https://www.youtube.com/watch?v=hhEfqa_x7RQ

Percent Yield - More Examples:
https://www.youtube.com/watch?v=w1njGAkc8og

Percent Error:
https://www.youtube.com/watch?v=JbEo46uV6d4

_________________________________
Percent Composition By Mass:
https://www.youtube.com/watch?v=bGmbyztdCHE

Empirical Formula Problems:
https://www.youtube.com/watch?v=JeSSucG-CVw

Empirical Formula - Hydrated Compounds:
https://www.youtube.com/watch?v=gl_QAO5y9Ig

Combustion Analysis:
https://www.youtube.com/watch?v=uvR7zNJ1KoI

Stoichiometry Practice Test:
https://www.youtube.com/watch?v=mP2Yg8alyR0

_______________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio

View full lesson: http://ed.ted.com/lessons/wher....e-did-english-come-f

When we talk about ‘English’, we often think of it as a single language. But what do the dialects spoken in dozens of countries around the world have in common with each other, or with the writings of Chaucer? Claire Bowern traces the language from the present day back to its ancient roots, showing how English has evolved through generations of speakers.

Lesson by Claire Bowern, animation by Patrick Smith.

This physics video tutorial explains how to solve any circuit problem with capacitors in series and parallel combinations. This video explains how to calculate the electric charge and voltage on every capacitor in a series and parallel circuit. In a series circuit, the capacitors have the same charge and the voltages are additive following kirchoff's voltage law. In a parallel circuit, all of the capacitors have the same voltage but their charges are additive. This tutorial contains plenty of examples and practice problems.

Capacitors - Basic Introduction:
https://www.youtube.com/watch?v=BimpNou0orc

How To Solve DC Circuits:
https://www.youtube.com/watch?v=eFlJy0cPbsY

KCL and KVL Circuit Analysis:
https://www.youtube.com/watch?v=2Zu3ppq3n8I

Equivalent Capacitance:
https://www.youtube.com/watch?v=PPhSmZ6w9WY

Capacitors In Series and Parallel:
https://www.youtube.com/watch?v=zaT4JorVUz0

__________________________
More Example Problems:
https://www.youtube.com/watch?v=a-gPuw6JsxQ

Electron Flow In Capacitors:
https://www.youtube.com/watch?v=iQZknlJjaj4

RC Circuit Physics Problems:
https://www.youtube.com/watch?v=PLQrPqYlPmI

Voltmeters and Ammeters:
https://www.youtube.com/watch?v=NLPSHwDUYrY

Wheatstone Bridge Circuit:
https://www.youtube.com/watch?v=jFvVtB10B1I

______________________________
Basic Electronics For Beginners:
https://www.youtube.com/watch?v=uXr4lXYjXuU

Magnetic Force on a Wire:
https://www.youtube.com/watch?v=nv28Cp-ILJ0

Magnetic Force on a Moving Charge:
https://www.youtube.com/watch?v=7MBawzone30

The Homopolar Motor:
https://www.youtube.com/watch?v=6Oj4qvCR6ow

Physics PDF Worksheets:
https://www.video-tutor.net/ph....ysics-basic-introduc