Top videos

Teacherflix
143 Views · 2 years ago

Welcome to How to Add, Subtract, Multiply, and Divide Mixed Numbers with Mr. J! Need help with adding, subtracting, multiplying, and dividing mixed numbers? You're in the right place!

Whether you're just starting out, or need a quick refresher, this is the video for you if you're looking for help with how to add, subtract, multiply, and divide mixed numbers. Mr. J will go through an adding mixed numbers example, a subtracting mixed numbers example, a multiplying mixed numbers example, and a dividing mixed numbers example.

More Mixed Number Videos:
✅ Adding Mixed Numbers with Unlike Denominators: https://youtu.be/jSd9PMlozQk
✅ Subtracting Mixed Numbers with Unlike Denominators: https://youtu.be/ORyhjp3-HYI
✅ Dividing Mixed Numbers: https://youtu.be/cARsEw-s8Fg
✅ Multiplying Mixed Numbers: https://youtu.be/gMJBu8BXhgU
✅ Multiplying and Dividing Mixed Numbers: https://youtu.be/q2nLRHjwZ5k
✅ Add and Subtract Mixed Numbers: https://youtu.be/h7Vs7uUPZrE
✅ Mixed Numbers to Improper Fractions | Improper Fractions to Mixed Numbers: https://youtu.be/6vOC3xPnjpA

About Math with Mr. J: This channel offers instructional videos that are directly aligned with math standards. Teachers, parents/guardians, and students from around the world have used this channel to help with math content in many different ways. All material is absolutely free.

Click Here to Subscribe to the Greatest Math Channel On Earth: https://goo.gl/XHTrfY

Follow Mr. J on Twitter: @MrJMath5

Email: math5.mrj@gmail.com

Music: https://www.bensound.com/royalty-free-music

Hopefully this video is what you're looking for when it comes to adding, subtracting, multiplying, and dividing mixed numbers.

Have a great rest of your day and thanks again for watching! ✌️✌️✌️

Teacherflix
8 Views · 2 years ago

Now that we’re done with the planets, asteroid belt, and comets, we’re heading to the outskirts of the solar system. Out past Neptune are vast reservoirs of icy bodies that can become comets if they get poked into the inner solar system. The Kuiper Belt is a donut shape aligned with the plane of the solar system; the scattered disk is more eccentric and is the source of short-period comets, and the Oort Cloud which surrounds the solar system out to great distances is the source of long-period comets. These bodies all probably formed closer to the Sun and got flung out to the solar system’s suburbs by gravitational interactions with the outer planets.

Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/product....s/crashcourse-astron

--

Chapters:
Introduction: Where Do Comets Come From? 00:00
Kuiper Belt, Scattered Disk, and Oort Cloud 2:52
Long-Period Comets come from the Oort Cloud 4:03
Short-Period Comets come from the Scattered Disk 4:27
Pluto, Plutinos, and other Kuiper Belt Objects 4:47
Oort Cloud Objects 8:25
Review 10:38
--

PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Follow Phil on Twitter: https://twitter.com/badastronomer

Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Tumblr - http://thecrashcourse.tumblr.com
Support CrashCourse on Patreon: http://www.patreon.com/crashcourse

--

PHOTOS/VIDEOS
HD Long Exposure Star Timelapse https://vimeo.com/34172172 [credit: Jeffrey Beach, Beachfront B-Roll]
Fine Structure in the Comet’s Jets http://blogs.esa.int/rosetta/2....015/01/16/fine-struc http://en.wikipedia.org/wiki/P....rotoplanetary_disk#m [credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA]
Artist's impression of a protoplanetary disk. [credit: ESO/L. Calçada - ESO]
Creating Gas Giants http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1 [credit: NASA's Goddard Space Flight Center]
What is a Sungrazing Comet? http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1 [credit: NASA's Goddard Space Flight Center]
Pluto/Neptune Orbit http://www2.jpl.nasa.gov/files..../images/browse/pluto [credit: NASA]
1992 QB1 http://solarsystem.nasa.gov/mu....ltimedia/gallery/199 [credit: ESO]
Eris http://apod.nasa.gov/apod/ap060918.html [credit: W. M. Keck Observatory]
Moons of Pluto http://en.wikipedia.org/wiki/K....erberos_(moon)#/medi [credit: NASA, ESA, and M. Showalter (SETI institute)]
New Horizons Approach http://pluto.jhuapl.edu/common..../content/animations/ [credit: JHUAPL]
Moon http://svs.gsfc.nasa.gov/vis/a....000000/a003800/a0038 [credit: NASA/Goddard Space Flight Center Scientific Visualization Studio]
Pluto http://solarsystem.nasa.gov/multimedia/display.cfm?Category=Planets&IM_ID=20073 [credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute]
Sedna’s Orbit http://commons.wikimedia.org/w....iki/File:Sedna-PIA05 [credit: NASA]
Artist’s Conception of Kuiper Belt http://en.wikipedia.org/wiki/F....ile:14-281-KuiperBel [credit: NASA, Wikimedia Commons]
Kuiper Belt World (video) http://planetquest.jpl.nasa.gov/video/41 [credit: NASA Kepler Mission/Dana Berry]
Pluto Discovery Plates http://azmemory.azlibrary.gov/....cdm/singleitem/colle [credit: Clyde Tombaugh, Lowell Observatory]

Teacherflix
4 Views · 2 years ago

We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you'd like us to cover any additional topics, please let us know. For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Teacherflix
57 Views · 2 years ago

This long division math youtube video tutorial explains how to divide big numbers the easy way. It explains how to perform long division with 2-digit divisors with remainders. This video contains plenty of examples and practice problems. It's useful for beginners and for kids in 4th grade or 3rd grade. My recommendation is to make a list of the multiples of the divisor from 1 to 10 and use it perform the long division problem. The video will explain everything.

Basic Addition:
https://www.youtube.com/watch?v=2WxfQIElJuw

Basic Subtraction:
https://www.youtube.com/watch?v=3fYgZgbOJmM

Addition and Subtraction - Number Lines:
https://www.youtube.com/watch?v=wNhbz1EUPrc

Long Multiplication:
https://www.youtube.com/watch?v=GKetIwxaenA

Lattice Multiplication:
https://www.youtube.com/watch?v=ZDmNdjiYAIw

Area Model Multiplication:
https://www.youtube.com/watch?v=UV0ky5fESI0
____________________________________
Basic Division:
https://www.youtube.com/watch?v=yAJxHO7CLh4

Long Division:
https://www.youtube.com/watch?v=GiiuZ8sfw00

Short Division:
https://www.youtube.com/watch?v=uKsSB8zIR9M

Mental Math Tricks:
https://www.youtube.com/watch?v=nTn9gVqRfKY

Exponentiation and Tetration:
https://www.youtube.com/watch?v=S3s9cWWnZj0
_____________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/

Teacherflix
18 Views · 2 years ago

Myelin sheaths, nodes of Ranvier, and saltatory conduction in neurons. Created by Sal Khan.

Watch the next lesson: https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/nervous-system-introduction/v/synapse-structure?utm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine

Missed the previous lesson? https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/nervous-system-introduction/v/electrotonic-action-potential?utm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine

Health & Medicine on Khan Academy: No organ quite symbolizes love like the heart. One reason may be that your heart helps you live, by moving ~5 liters (1.3 gallons) of blood through almost 100,000 kilometers (62,000 miles) of blood vessels every single minute! It has to do this all day, everyday, without ever taking a vacation! Now that is true love. Learn about how the heart works, how blood flows through the heart, where the blood goes after it leaves the heart, and what your heart is doing when it makes the sound “Lub Dub.”

About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to Khan Academy’s Health & Medicine channel: https://www.youtube.com/channe....l/UC1RAowgA3q8Gl7exS
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us

Teacherflix
61 Views · 2 years ago

Mini Lesson Demonstration for Teachers of Newcomer Students:

This is a quick intro/spiral review of fact families and math vocabulary words: plus, minus, and equal. It also includes shapes and left/right. As always, read the paragraph out loud with your Newcomers several times.

Hope you enjoyed the lesson! Don't forget to click the bell button, give the video a like and comment below.

Thanks for all the support!

SUBSCRIBE to Ms. Newcomer Teacher ⇒ https://www.youtube.com/channe....l/UCOZSs3y7S0QbKYT4Z

________________________________
MUSIC:
Wanderlust by Declan DP: https://soundcloud.com/declandp/wande...
Attribution 3.0 Unported (CC BY 3.0)
https://creativecommons.org/licenses/...
Music provided by Free Vibes: https://goo.gl/NkGhTg

Teacherflix
17 Views · 9 months ago

This is a full lesson video on run-on sentences for children! Learn what run-on sentences are and how to fix them!

This video was originally uploaded as a shortened version of my Run-on Sentences for Kids video.

Thanks for watching! I hope you have an AMAZING day!

Daniel
"Homeschool Pop"

Teacherflix
12 Views · 9 months ago

Does light take all possible paths at the same time? 🌏 Get exclusive NordVPN deal here ➵ https://NordVPN.com/veritasium It’s risk free with Nord’s 30 day money-back guarantee!✌

A massive thank you to Dr. Andrew Mitchell for all his help and expertise. If you want to delve further into this topic then we highly recommend his lecture on Classical physics derived from quantum mechanics: https://www.youtube.com/watch?v=2iuLwWDYC4U&t=1s

We’re incredibly grateful to Prof. David Kaiser, Prof. Steven Strogatz, Prof. Geraint F. Lewis, Elba Alonso-Monsalve, Prof. Christopher S. Baird, Prof. Anthony Bloch, and Prof. Stephen Bartlett for their invaluable contributions to this video.

A special thanks to Mahesh Shenoy from FloatHeadPhysics for his help with this video. Check out his excellent intuitive video on the UV Catastrophe here (Sep 2024): https://www.youtube.com/watch?v=ALEDjjAVZSY

Sign up to the Veritasium newsletter for weekly science updates - https://ve42.co/Newsletter

▀▀▀
0:00 What path does light travel?
2:40 Black Body Radiation
6:47 How did Planck solve the ultraviolet catastrophe?
9:42 The Quantum of Action
13:25 De Broglie’s Hypothesis
15:16 The Double Slit Experiment
20:00 How Feynman Did Quantum Mechanics
25:01 Proof That Light Takes Every Path
31:16 The Theory of Everything

▀▀▀
Sign up to our Patreon to watch the Q&A for free: https://www.patreon.com/c/veritasium

Try Snatoms! A molecular modelling kit I invented where the atoms snap together.
https://ve42.co/SnatomsV

▀▀▀
References:
Armin Hermann (Nov 1974). The Genesis of Quantum Theory (1899-1913). - https://ve42.co/genquanttheor
Richard P. Feynman (1985). QED The Strange Theory of Light and Matter. - https://ve42.co/qed
A fantastic book on the history of the Principle of Least Action: Rojo, A. and Bloch, A. The
Principle of Least Action: History and Physics. - https://ve42.co/Bloch2018
Coopersmith, J. (2017). The lazy universe: an introduction to the principle of least action. Oxford University Press. - https://ve42.co/LazyU
PBS Space Time. (Nov 2021) - https://www.youtube.com/watch?v=Q_CQDSlmboA
Sabine Hossenfelder. (May 2022) - https://www.youtube.com/watch?v=A0da8TEeaeE
Max Planck (1901). On the Law of Distribution of Energy in the Normal Spectrum. Annalen der Physik - https://ve42.co/lawdistenergy
Paul Ehrenfest (1911). Welche Züge der Lichtquantenhypothese spielen in der Theorie der Wärmestrahlung eine wesentliche Rolle?. Wiley Online Library - https://ve42.co/quantthermrad
Nils-Erik Bomark and Reidun Renstrøm (Aug 2023). The Ultraviolet myth. Proceedings of Science - https://ve42.co/uvmyth
Planck's law. In Wikipedia - https://ve42.co/planckslaw
PBS Space Time. (Jul 2017). - https://www.youtube.com/watch?v=vSFRN-ymfgE&t=10s
Einstein and The Photoelectric Effect. (Jan 2005) via APS News - https://ve42.co/einsteinphotoelec
Louis de Broglie (1924). On the Theory of Quanta. - https://ve42.co/theoryquanta
Larry Sorensen (2012). Path Integrals 1. University of Washington - https://ve42.co/pathintegrals
Feynman’s Method of “A Particle Exploring All Possible Paths”. (Mar 2018) via Pure Dhamma - https://ve42.co/allposspaths

Additional References - https://ve42.co/AdditionalReferences-PoLA2

Images & Video:
Nobistor Altona 1880 via NDR - https://ve42.co/streetlight
Edison incandescent lights by William J. Hammer via Wikimedia Commons - https://ve42.co/edinclights
The full expanded form of the Standard Model Lagrangian by Chen Ning Yang et al. via Wikipedia - https://ve42.co/stmodellang
Muon Ray. (2011). https://www.youtube.com/watch?v=-QUj2ZRUa7c
Muon Ray. (2011). https://www.youtube.com/watch?v=1C7abO7LtV0
Bohrs Atomic Model via EEEGUIDE.COM - https://ve42.co/bohrmodel

▀▀▀
Special thanks to our Patreon supporters:
Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, Anton Ragin, Autodidactic Studios, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Dave Kircher, David Johnston, David Tseng, Evgeny Skvortsov, Garrett Mueller, Gnare, gpoly, Greg Scopel, Juan Benet, Keith England, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Matthias Wrobel, Meekay, meg noah, Michael Krugman, Orlando Bassotto, Paul Peijzel, qiaohui wei, Richard Sundvall, Sam Lutfi, Tj Steyn, TTST, Ubiquity Ventures, wolfee

▀▀▀
Directed by Casper Mebius
Written by Casper Mebius and Derek Muller
Edited by Trenton Oliver and Peter Nelson
Animated by Fabio Albertelli, Mike Radjabov, Ivy Tello, Andrew Neet and Emma Wright
Illustrations by Jakub Misiek, Tommy A. Steven and Cainejan Esperanza
Filmed by Derek Muller and Casper Mebius
Produced by Casper Mebius, Derek Muller, Rob Beasley Spence, Gabe Strong, Geeta Thakur, Emilia Gyles, Zoe Heron, Emily Zhang and Tori Brittain

Thumbnail contributions by Ignat Berbeci, Ben Powell, Jakub Misiek, Ren Hurley, and Peter Sheppard

Additional video/photos supplied by Getty Images and Storyblocks
Music from Epidemic Sound

Teacherflix
6 Views · 9 months ago

Visit https://www.abcmouse.com/learn/youtube to find out more about our award-winning online learning program for children 2–8!

Watch more songs, stories, and more by subscribing to our YouTube channel: https://YouTube.com/ABCmouse.

© Age of Learning, Inc. All rights reserved.

Teacherflix
27 Views · 5 months ago

✨ Important Links✨
➡️ January Training: https://zinny-studio.kit.com/12892a3147
➡️ Join Accelerate: https://www.skool.com/accelerate-by-zinny-studio

This video shows how to use a free tool from Google to understand what makes successful YouTube channels tick, helping with your youtube growth. Learn to analyze content structures and storytelling patterns to generate original youtube ideas and outlines. We'll cover how to write a video script quickly, and create the video. Making your content creation process more efficient and boosting your overall productivity.

✨ Tools I use✨
➡️ Notebooklm: https://notebooklm.google.com/
➡️ ElevenLabs: https://bit.ly/3RVEApb
➡️ Get our 30-day trial of vidIQ for only $1: https://vidiq.com/thezinnystudio
➡️Higgsfield: https://goto.higgsfield.ai/nXQQDo ( Use ZINNY_10 for 10% off)
➡️ Dzine AI: https://www.dzine.ai/?via=zinny


✨Videos to Watch Next✨
➡️How Much Youtube Paid Me:https://www.youtube.com/watch?v=qEAzfynLbqs
➡️ How To Start a Faceless Youtube Channel With AI (Full Course): https://youtu.be/m61Ww273U18
➡️Create AI Talking Avatar:https://www.youtube.com/watch?v=4nYMU-V6avY&list=PLgJT3CexzMMLr6fVgNBaAhS0nTDT4tAQJ&index=1
➡️How To Create Faceless AI Animation Videos (FULL COURSE) : https://www.youtube.com/watch?v=L5EEA9lJZc0

✨ Important Links✨
➡️ For business inquiries: partnerships@zinnystudio.com

I am affiliates for some of the brands mentioned on the channel. I earn from qualifying purchases. I only recommend products I actually use, love, and think you would benefit from. These affiliate links allow me to continue to post free content on YouTube.

Thank you for watching! If you have any questions please feel free to reach out or leave a comment in the comment section.

✨Disclaimer✨
Note that I am not a financial or career advisor. The content on this channel is for learning purposes only. My results are due to hard work, dedication, and in-depth research, and your results may vary. Information in my videos is accurate as of the recording date, but its accuracy cannot be guaranteed at a later time.

#facelessyoutubechannel #youtubeautomation #aivideogenerator #aigeneratedvideos #notebooklm

Teacherflix
14 Views · 3 months ago

Gemini, Google’s incredible AI tool, is changing FAST! Here’s everything you need to know to use Gemini in the classroom.

Want to become a Gemini Certified Educator? Download my FREE study guide to help you prepare: chrm.tech/gemini-exam

Table of Contents:
0:00 Intro
0:42 Use your school account!
1:42 Creating images
2:11 Creating video (premium)
3:08 Using canvas in Gemini
4:20 Deep research with Gemini
6:23 Creating audio summaries with Gemini
6:56 Guided learning with Gemini
8:27 Gemini Gems
9:40 Gems in Google Classroom
10:18 Gemini Educator Certification

Additional Resources:
* Gemini Study Guide: chrm.tech/gemini-exam
* Is Gemini advanced worth it for educators: https://youtu.be/bPwAB2uUtaU
* Advanced Gemini features for educators: https://www.chrmbook.com/advanced-gemini-features/
* Lesson planning with Gemini Gems: https://www.chrmbook.com/ai-lesson-planning-gems/
-------------
John R. Sowash is a former HS biology teacher and principal who helps teachers use technology to improve instruction. You can pick up a copy of his book, read his blog, or invite him to come and visit your school.
✏️ Blog: http://Chrmbook.com
📕 Podcast: http://Chrmbook.com/podcast
🎙️ Book: http//:Chrmbook.com/book
🤝 Speaking and Consulting: http://SowashVentures.com/contact

Teacherflix
7 Views · 1 month ago

Up until now, you’ve been writing custom code to give AI access to your data. But that might not be needed for much longer.

Anthropic’s newly introduced solution, MCP (Model Context Protocol), is set to change the game for good.

MCP acts as a universal bridge between your data and AI, offering a plug-and-play approach that eliminates the need for custom integrations. Whether it’s your databases, APIs, or documents, MCP standardizes how AI models interact with your specific datasets.

If this innovation gets the adoption it deserves, we’ll soon be able to have AI seamlessly interact with our data—with no custom coding required.

Learn more about MCP and its potential to simplify AI integrations:
👉 Anthropic’s Official MCP Announcement: https://www.anthropic.com/news..../model-context-proto

👉 More on MCP: https://modelcontextprotocol.io/quickstart

#AIIntegration #AnthropicMCP #FutureOfAI #AIExplained #aiwithsupreet #mcp #anthropic #claude

Teacherflix
5 Views · 2 years ago

This fast math trick can be used to divide any number by 5, 25 or 125 instantly and easily.

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

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

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

Teacherflix
5 Views · 2 years ago

This easy visual proof shows that the area of a circle is πr2.


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

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

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

Teacherflix
11 Views · 2 years ago

In physics, work is equal to force times a distance. The force and the movement must be in the same direction.
Basic Work Problems
https://www.youtube.com/watch?v=YSgSfFtvWN0&t=1s

Transcript
http://www.moomoomathblog.com/....2022/01/what-is-work

Teacherflix
18 Views · 9 months ago

⁣This is a short video that demonstrates a simple and quick mental math trick for multiplying two-digit numbers with identical digits by a single-digit number (e.g., 55 x 3 or 22 x 6).
The method is as follows:
Multiply the repeating digit by the other number in the problem. For example, for 55 x 3, you calculate 5 x 3 = 15.
To find the result, write the number from step 1 twice, like 15 15.
Take the first digit of the first number (1) and place it at the beginning of your answer.
Add the second digit of the first number (5) to the first digit of the second number (1). This gives you the middle digit of your answer (5 + 1 = 6).
Take the second digit of the second number (5) and place it at the end of your answer.
This process quickly gives you the final answer: 165.
The video shows this method with the following examples:
55 x 3 = 165
22 x 6 = 132
77 x 5 = 385
33 x 7 = 231
99 x 4 = 396
44 x 8 = ? (The video does not show the final answer for this problem).

Teacherflix
6 Views · 9 months ago

Thirteen wants to join the Subtraction Somersault Team but only knows how to take away Three. At Ten’s Place gym, Ten explains how to take numbers away using two methods. By bridging the ten, Thirteen learns how to subtract his numbers and learn a new skill.

For more, download the official Numberblocks apps;
Meet the Numberblocks - https://onelink.to/spzumk
Numberblocks Card Fun - https://onelink.to/wz9er9
Numberblocks World - https://onelink.to/8fzh7d
Numberblocks Hide and Seek - https://onelink.to/dy7jjp
NB Bedtime Stories - https://onelink.to/3w7nmk

Official website;
https://www.learningblocks.tv/numberblocks/home

As seen on CBeebies! Watch Numberblocks full episodes on BBC iPlayer: https://bbc.in/2ZHvNtl
Subscribe for more Numberblocks: https://goo.gl/rF32S8
Visit the Numberblocks on;
Twitter: @numberblocks
Facebook: facebook.com/numberblocks/
Instagram: @numberblocks

We are the Numberblocks! Little blocks with big ideas, having a ton of number fun. Learn how to add, subtract and count the fun and educational way! In this educational CBeebies cartoon for kids, children can learn how to count with basic maths sums, using addition and subtraction with singular blocks that join together to make increasingly bigger numbers.

#Numberblocks #LearnToCount #season8

Teacherflix
6 Views · 9 months ago

The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram.
Support Veritasium on Patreon: http://bit.ly/VePatreon

A kilogram isn't what it used to be. Literally. The original name for it was the 'grave', proposed in 1793 but it fell victim to the French Revolution like its creator, Lavoisier. So begins the tale of the most unusual SI unit. The kilogram is the only base unit with a prefix in its name, and the only one still defined by a physical artifact, the international prototype kilogram or IPK.

But the problem with this definition has long been apparent. The IPK doesn't seem to maintain its mass compared to 40 similar cylinders minted at the same time. The goal is therefore to eliminate the kilogram's dependence on a physical object. Two main approaches are being considered to achieve this end: the Avogadro Project and the Watt Balance.

The Avogadro project aims to redefine Avogadro's constant (currently defined by the kilogram -- the number of atoms in 12 g of carbon-12) and reverse the relationship so that the kilogram is precisely specified by Avogadro's constant. This method required creating the most perfect sphere on Earth. It is made out of a single crystal of silicon 28 atoms. By carefully measuring the diameter, the volume can be precisely specified. Since the atom spacing of silicon is well known, the number of atoms in a sphere can be accurately calculated. This allows for a very precise determination of Avogadro's constant.

Special thanks to Katie Green, Dr. David Farrant, the CSIRO, and the National Measurment Institute for their help. Thanks also to Nessy Hill for filming and reviewing earlier drafts of this video.

There is debate as to whether this is truly the roundest object ever created. The Gravity Probe-B rotors are also spherical with very low tolerances such that they may in fact be rounder.

Music by Kevin McLeod (incompetech.com) Decision, Danse Macabre, Scissors

Teacherflix
5 Views · 9 months ago

SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub
We’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart
↓↓↓ More info and sources below ↓↓↓

Embarrassment. Awkwardness. Cringe. No matter what you call it. it’s one of the most unique human emotions, and one that’s particularly hard to figure out. But if a feeling exists and has lasted through evolution, then it probably has a purpose!

References: https://sites.google.com/view/....references-thescienc

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Teacherflix
7 Views · 9 months ago

✏️ Learn all about Wild Animals from A-Z with these fun and interactive nursery rhyme songs! 🥰 Watch your toddlers, preschoolers and kindergarteners learn about wild animals all around the world and get to practice their ABCs with fun songs that inspire kids to learn. ✨ Spark curiosity and pretend to play, all through song! 🤩

😊 Play along with Ruby and Lucas as your little one learns their ABCs while also learning about wild animals from A to Z. 🔸 Soon your whole family will be singing along with these fun videos in ultra HD 4k from RV AppStudios. ✔️ If you like educational kids videos like these make sure to follow our channel and turn on the notification bell so you don’t miss a video!

⦿ Learn alphabets with their animals name:
🐊 Alligator
🐻 Bear
◾ Cheetah
🦌 Deer
🐘 Elephant
🦊 Fox
🦒 Giraffe
🦛 Hippopotamus
◾ Iguana
🐆 Jaguar
🐨 Koala
🦁 Lion
🐒 Monkey
◾ Numbat
◾ Ostrich
🐼 Panda
◾ Quokka
🦏 Rhinoceros
🦨 Skunk
🐅 Tiger
◾ Umbrella Cockatoo
◾ Vulture
🐺 Wolf
◾ Xenopus
◾ Yak
🦓 Zebra

⭐ RV AppStudios is thrilled to add our newest song for kids to our collection, and one we're sure your kids will love singing along-to! 👍 As always, be sure to LIKE and SHARE this kids song to show more families that it can be easy and fun to learn 🔔 And don't forget to SUBSCRIBE for more free animated sing-along songs and nursery rhymes for kids by RV Kids! 🔥

📢 Coloring pages for kids and much more - https://www.rvappstudios.com

🎯 Try our FREE Educational Apps for Babies & Toddlers:
🟡 Google Play: https://play.google.com/store/....apps/dev?id=74300059
🟣 iOS: https://apps.apple.com/develop....er/rv-appstudios-llc
🟢 RV AppStudios: https://www.rvappstudios.com/kidsapp.html

🌟 Fun educational videos for toddlers by RV AppStudios:
🌻 Learn Farm Animals Names and Sounds - https://youtu.be/mtP11p1xuCY
🐱 Animals Sounds & Baby Names - https://youtu.be/4jeHK_9NiXI
✏️ Alphabet Learning Videos For Toddlers - https://youtu.be/X-ktkw8LY70
📖 ABC Flashcards for Toddlers - https://youtu.be/p-kAI-qOeJA

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#WildAnimals #KidsLearning #Alphabet




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