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What are you waiting for? In this video we are going to know the most interesting facts about the moon, come with us to this adventure and learn all you can.
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Recommended video: The Elephant
https://www.youtube.com/watch?v=qZrXD...
VITAL FUNCTIONS https://youtu.be/SKy_C2cr63M
PREMIERES! 👉 https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
HEART and CIRCULATORY SYSTEM https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
Discover hundreds of never-before-seen resources! Create your free account at https://my.happylearning.tv/ and start learning in the most entertaining way.
What are you waiting for? ♥️♥️ Let's keep our hearts nice and healthy!
The human body is FASCINATING and there's noting more important than the human heart... so let's get to know a little more about it!
💭 What is the most interesting fact you learnt today?
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Recommended video: Fun facts about the human heart
https://youtu.be/bJVcgROEJAo
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The Human Heart
Hello Friends, welcome to a new Happy Learning Video. Today, we’re going to get to know the engine in our body, today we’re going to get to know the human heart.
The heart is the most special muscle which we have. It’s situated a little to the left from the center of our chest, between our lungs and is in an oblique position, positioned diagonally.
We say that it’s very special because it sends blood all over our body. Blood delivers oxygen and nutrients we need to live to all of our cells.
Our heart is a type of pump, like the ones we use to inflate the wheels on our bikes, the only thing is, that instead of pumping air, it pumps blood.
The heart is divided into two parts. The right part and the left part, separated by a cellular wall, so they are not connected internally.
Each one of these parts has two chambers or cavities. The upper cavities are called right and left atrium. And the lower cavities are called right and left ventricle. The heart also has four kind of doors which are called valves. These valves open to let blood in and then they close so this blood can’t go back.
Now we’ve got to know the most important parts of the heart. But… Do you know how it works?
It all commences, in the right atrium, where the deoxygenated blood, meaning it has very little oxygen and nutrients, it enters the heart, then it goes past the first valve up to the right ventricle. Once it is here, the heart sends the blood directly to the lungs. And it’s in this moment, where the blood is oxygenated and is filled with oxygen and nutrients. When it is already oxygenated, it goes back to the heart reaching the left atrium, from where it will pass through the third valve until the last cavity, the left ventricle. Finally, the heart sends this now oxygenated blood through the fourth and last valve towards the rest of the body… and it starts again!!!
To understand how our heart beats, we only need to imagine that our hand is a heart and that when it opens up it fills up with blood, and when it’s closed it pumps that blood outwards.
When blood exits our heart, it flows through our whole body through blood vessels and there are three types: arteries, veins and capillary vessels.
Arteries deliver oxygen and nutrient rich blood to all organs in our body, veins take that blood, low in oxygen, back to the heart and the capillary vessels, which are very small, connect arteries with veins and cells.
Fun Fact! Do you know approximately how much a human heart weighs? Well it’s 450 grams, almost half a kilo.
The truth is that the heart is the engine in our circulatory system and is an incredibly strong muscle, it’s able to beat more than 100 thousand times a day. So cool!!!
We can’t say goodbye without giving you a tip! WE need to take care of our hear and that’s why we need to do physical exercise, we need to eat healthy foods, and please, never ever smoke, it’s the worst thing you can do to hurt your heart.
Goodbye Happy Friends! See you in the next Happy Learning Video!
PREMIERES! 👉 https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
THE RESPIRATORY SYSTEM 🫁 💨 👃🏼| Happy Learning
Welcome back to Happy Learning! In this exciting episode, we'll explore the fascinating world of the human body through sign language. Are you ready to discover how our incredible respiratory system works?
Join us on an educational journey as we learn about the lungs, the trachea, and everything related to our breathing.
Don't miss this opportunity to learn about the human body in a unique and exciting way! Subscribe, like, and share with your friends so everyone can join in the fun of Happy Learning! Let's get started!
Discover hundreds of never-before-seen resources! Create your free account at https://my.happylearning.tv/ and learn in the most entertaining way.
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Students examine how different balls react when colliding with different surfaces, giving plenty of opportunity for them to see the difference between elastic and inelastic collisions, learn how to calculate momentum, and understand the principle of conservation of momentum.
View the full lesson on TeachEngineering:
https://www.teachengineering.o....rg/activities/view/c
TeachEngineering has over 1,500 FREE lessons and activities. Visit https://www.teachengineering.org/ for more
Music - Water Please - GrandBankss
Concluding a two-part lab activity, students use triple balance beams and graduated cylinders to take measurements and calculate densities of several household liquids and compare them to the densities of irregularly shaped objects (as determined in Part 1). Then they create density columns with the three liquids and four solid items to test their calculations and predictions of the different densities. Once their density columns are complete, students determine the effect of adding detergent to the columns. After this activity, present the associated Density & Miscibility lesson for a discussion about why the column layers do not mix.
View the full lesson on TeachEngineering:
https://www.teachengineering.o....rg/activities/view/w
TeachEngineering has over 1,500 FREE lessons and activities. Visit https://www.teachengineering.org/ for more
Music: Electrodoodle
Why do some objects float while others sink? Students make sense of this phenomenon by engaging in the science and engineering practices of asking questions and defining problems, using models, and designing solutions. Students then apply what they discover to solve everyday situations, such as preventing a car from sinking. In this activity, students build a road out of Jell-O that is sturdy enough to drive a toy car across without getting sinking. Using the full engineering design process, students research and choose available ingredients that will support their car. After research, students investigate which ingredients will help make their Jell-O as strong as possible to protect their car from sinking in the “mud”. They test their prototype to see if the toy car will be able to drive across the Jell-O without sinking. The teams evaluate the process, improve the design, and recreate if needed. Students discuss their design, data, and final results in front of the class.
View the full activity on TeachEngineering: https://www.teachengineering.o....rg/activities/view/u
TeachEngineering has over 1,500 FREE lessons and activities. Visit http://www.TeachEngineering.org for more!
music - Bicycle Reunited
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Letra
La Potranca Margarita a la granja hoy llego
con su cola bien peinada y su piel brillando al sol
Los caballos de reojo cuando la miran pasar
admirando su belleza, no hacen más que preguntar:
¿Quién será? La Potranca Margarita
¿Dónde va? A pasear por el jardín
Ella es la potranca más bonita
Y sin mas ni más, la siguen detrás,
todos juntos a pasear
La Potranca Margarita es hermosa como el sol
tiene largas las pestañas se parece a una flor
Los caballos de la granja cuando la miran pasar
se ponen colorados y vuelven a preguntar:
¿Quién será? La Potranca Margarita
¿Dónde va? A pasear por el jardín
Ella es la potranca más bonita
Y sin mas ni más, la siguen detrás,
todos juntos a pasear
Y sin mas ni más, la siguen detrás,
todos juntos a pasear
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Título Original: La Potranca Margarita
Autor/Compositor: Marceillac, Eduardo Alberto - Rogier, Cecilia María Teresa
Intérprete: Dúo Tiempo de Sol
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*Special thanks to "Andrea" and Guillermo for helping me in this video! ;-)
Here’s a quick Spanish lesson on making sentences in Spanish.
Someone asked me a while back to make a video on simple sentences. I hadn’t thought of how tricky that might be to some. As a learner, I always thought of Spanish as a code. Maybe this code will help you as well!
Basically it involves a subject and a verb. And we can also add some other things to the sentence. In this video we’ll talk about one of those things: indirect objects and give some examples.
Basically if you can answer what the sentence is being done TO or FOR, you have your indirect object.
If you’re confused, you might watch some of my other videos on Indirect Objects.
Please like the video and share with others who could benefit. More Spanish lessons coming.
👍Please share this video with others and like it to help me get the word out on my videos!
And let me know about other troublesome topics you’d like in bite-sized form.
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¡Bienvenidos a una nueva clase de español para principiantes!
En este video, aprenderemos a presentarnos, decir de dónde somos, deletrear palabras y mantener diálogos simples en español.
👉 Ideal para quienes están dando sus primeros pasos en el idioma.
Hemos organizado el contenido en tres partes principales:
✨ 1. Presentarse y hablar de tu país
Aprende a decir tu nombre y tu país de origen:
Ejemplo: "Hola, me llamo Arti Suharto. Soy de Indonesia."
Expresiones clave:
"¿Cómo te llamas?"
"¿De dónde eres?"
"Me llamo..."
"Soy de..."
Tiempos verbales:
Presente de indicativo ("me llamo", "soy", "vivo", "hablo").
✨ 2. Deletrear en español
Sonidos y letras especiales:
LL, Ñ, Z, C, S, G, J, CH, B, V, H.
Pronunciaciones típicas con ejemplos de países.
Ejercicios de deletreo:
Cómo escribir ciudades como Madrid, Tokio o Buenos Aires.
Ejemplo: "¿Cómo se escribe Londres? L - O - N - D - R - E - S."
✨ 3. Diálogos básicos para el día a día
Conversaciones reales entre estudiantes:
Presentaciones formales e informales.
Preguntar por la lengua materna y lugar de residencia.
Ejemplo de preguntas útiles:
"¿Hablas inglés?"
"¿Dónde vives?"
Gramática y expresiones importantes:
Negaciones: "No, no soy de Croacia."
Preguntas con "¿Qué idioma se habla en...?"
🎯 Objetivos del video:
Construir confianza para presentarte en español.
Mejorar la pronunciación de letras difíciles.
Practicar la estructura básica de preguntas y respuestas.
✅ Consejo:
Repite las frases en voz alta y, si quieres, practica escribiéndolas en los comentarios para afianzar lo aprendido.
Si quieres seguir aprendiendo español de forma fácil y divertida, suscríbete al canal y no te pierdas los nuevos videos que subimos cada semana.
🤩 Help your kids learn the alphabet from A to Z with this fun educational video starring Lucas & Friends! 🦁 Teaching toddlers, preschoolers, and kindergarteners their ABCs couldn't be easier. Just press play and let the learning begin! 🚀
Teaching the alphabet to kids can be a challenge. There are so many letters between A and Z, and they seem so abstract to young children. 📖 This ABCD learning video makes the process easier by showing pictures of objects that represent each letter while saying the letter outloud. Lucas, Ruby, Lilly, and Brody dance while showing off each letter in order, teaching kids their ABCs with ease! ✔️
What makes this alphabet learning video even more amazing is that your child will learn to recognize the English ABCs in both uppercase and lowercase. ✏️ It's super easy to remember, too, since all letters are shown with colorful pictures! With beautiful pictures and animated lessons, children around the world will love learning the alphabet (A-Z). Be sure to watch the video in ultra HD 4k for the best audio and visual quality possible. Now gather up the kids and get ready to learn! 🎯
⦿ Learn Alphabet A to Z:
00:00 Lucas & Friends introduction
0:39 A for APPLE
1:14 B for BALL
1:46 C for CAT
2:17 D for DOG
2:52 E for EAGLE
3:29 F for FROG
4:01 G for GOAT
4:33 H for HAT
5:03 I for INK
5:37 J for JUICE
6:15 K for KING
6:46 L for LION
7:24 M for MONKEY
8:01 N for NEST
8:36 O for OWL
9:10 P for PIG
9:41 Q for QUAIL
10:18 R for RAT
10:49 S for SUN
11:24 T for TRAIN
12:02 U for UNICORN
12:41 V for VIOLIN
13:19 W for WHALE
13:55 X for X-RAY
14:29 Y for YACHT
15:09 Z for ZEBRA
⭐ Hope you enjoy the fun baby & toddler learning video to learn new words and improve vocabulary. If our video entertains your child and makes them happy, please hit the LIKE button. SHARE it with your friends and family members so that more and more kids can sing and have fun. 👍 SUBSCRIBE to our channel to watch our other nursery rhymes, kids songs, and educational videos for children and parents. 🔔 And make sure you turn on the bell icon to get notified as soon as our new videos come up. 🔥
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🌟 More fun educational songs for kids by RV AppStudios:
🖍️ ABCD Drawing & Coloring - https://youtu.be/Ql3Dok_1E3w
📖 Alphabet ABC Flashcards - https://youtu.be/FzAACRBg_Qc
✏️ ABC Learning For Toddlers - https://youtu.be/6aCic6WDYl0
🧮 Learn Number Counting 1-20 - https://youtu.be/ZJ8xsVyeQqU
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#ABCD #Kindergarten #LearningVideos
The Lisa mission will be really cool, I look at all the reasons why.
Patreon: https://www.patreon.com/domainofscience
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The European Space Agency Mission LISA (Laser Interferometer Space Antennae) will launch in 2034 and will revolutionize the way we do astronomy. With a 2.5 million kilometre arm length it will be able to see kinds of gravitational waves that are impossible to see using Earth based detectors. Cool things it will see are collisions of super-massive black holes, orbiting white dwarf stars and measurements that will calibrate distance measures like sephid variable stars and supernovae, and it will be a new independent way of measuring the Hubble constant.
#gravitationalwaves #space #DomainOfScience
Thanks to the European Space Agency for letting me use their videos. More info about the cool work ESA are doing here: http://www.esa.int/ESA
Thumbnail image credit: NASA Goddard Space Flight Center https://www.nasa.gov/goddard
Video: https://youtu.be/uDhDZi9Qxhk
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An introduction video to the field of Ultra-cold Atom Physics filmed at the MUARC summer school in 2010.
This video introduces the concepts involved in cooling down atoms to such low temperatures that their quantum mechanical properties can be observed and manipulated.
If you ran evolution all over again, would you get humans? How repeatable is #evolution? This video is sponsored by @BountyBrand. #biology #science #QPU #HygieneBeginswithBounty #BountyPartner
Special thanks to Prof. Richard Lenski and team for showing me around the lab — it is an honor to be able to witness and document such a historic science experiment.
Thanks to Dr Zachary Blount for the help with research and setting up the competition time-lapse, Dr Nkrumah Grant for microscope images of the long-term line cells @NkrumahGrant
Devin Lake, Kate Bellgowan, and Dr. Minako Izutsu for being part of this video. Long Live the LTEE!
LTEE website — http://myxo.css.msu.edu/ecoli/index.html
Intro footage courtesy of the Kishony Lab — https://kishony.technion.ac.il
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References:
Lenski, R. E., & Travisano, M. (1994). Dynamics of adaptation and diversification: a 10,000-generation experiment with bacterial populations. Proceedings of the National Academy of Sciences, 91(15), 6808-6814. — https://ve42.co/Lenski1994
Lenski, R. E., Rose, M. R., Simpson, S. C., & Tadler, S. C. (1991). Long-term experimental evolution in Escherichia coli. I. Adaptation and divergence during 2,000 generations. The American Naturalist, 138(6), 1315-1341. — https://ve42.co/Lenski1991
Good, B. H., McDonald, M. J., Barrick, J. E., Lenski, R. E., & Desai, M. M. (2017). The dynamics of molecular evolution over 60,000 generations. Nature, 551(7678), 45-50. — https://ve42.co/Good2017
Blount, Z. D., Borland, C. Z., & Lenski, R. E. (2008). Historical contingency and the evolution of a key innovation in an experimental population of Escherichia coli. Proceedings of the National Academy of Sciences, 105(23), 7899-7906. — https://ve42.co/Blount2008
Blount, Z. D., Lenski, R. E., & Losos, J. B. (2018). Contingency and determinism in evolution: Replaying life’s tape. Science, 362(6415). — https://ve42.co/Blount2018
Wiser, M. J., Ribeck, N., & Lenski, R. E. (2013). Long-term dynamics of adaptation in asexual populations. Science, 342(6164), 1364-1367. — https://ve42.co/Wiser2013
N, Scharping. (2019). How a 30-Year Experiment Has Fundamentally Changed Our View of How Evolution Works. Discover — https://ve42.co/Scharping
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Research and Writing by by Derek Muller, Petr Lebedev and Casey Rentz
Animation by Ivy Tello
Filmed by Derek Muller, Emily Zhang and Raquel Nuno
Edited by Derek Muller
Music by Jonny Hyman and from Epidemic Sound https://epidemicsound.com
Additional video supplied by Getty Images
Thumbnail image courtesy of the Kishony Lab
Produced by Casey Rentz
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A strange metallic sphere with mysterious symbols recently fell in Colombia, leaving locals and scientists baffled. Was it space debris, a secret experiment, or something not of this world? This compilation dives into the greatest mysteries of our planet and beyond: from ancient artifacts and bizarre discoveries to unexplained natural phenomena and cosmic secrets. You’ll find stories about the Nazca Lines, the Black Knight satellite, strange lights in the sky, mysterious craters, ancient flying machines, and much more. Each video explores secrets that science still struggles to explain.
Animation is created by Bright Side.
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This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.
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Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
Discover how Deepseek-R1 is reshaping the AI coding landscape! This open-source marvel challenges the dominance of O1 and Sonnet 3.5, offering unmatched performance, flexibility, and affordability. Whether you're a developer or an enthusiast, this video will guide you through everything from accessing Deepseek-R1 for free to setting it up as a coding assistant with Roo-Cline.
Deepseek-R1 is more than just an open-source coding tool; it's a game-changer. From its cost-efficiency to its performance benchmarks, this video covers it all.
🔗 Timestamps:
00:00 - Introduction to Deepseek R1
00:42 - How to Access Deepseek R1 for Free
01:00 - Deepseek R1 APIs
01:33 - Benchmark Results: Deepseek R1 vs. O1 & Sonnet 3.5
02:55 - Setting Up Deepseek R1 as a Coding Assistant with Roo-Cline
03:38 - First Coding Test with Deepseek R1
05:49 - Pricing Comparison: Deepseek R1 vs. Sonnet 3.5
06:55 - Running Deepseek R1 Locally
08:00 - UI Coding with Deepseek R1
10:16 - Slow Response Times? Let’s Test!
11:17 - Results of UI Coding with Deepseek R1
11:31 - Deepseek R1’s Innovative "Ask Mode"
13:40 - System Requirements for Deepseek R1
14:00 - Deepseek R1 and the Open-Source Revolution
14:45 - Pricing Showdown: OpenAI O1 vs. Deepseek R1
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When school districts have access to technology built for the modern classroom, educators can reach students in new ways, fostering better teaching and increasing productivity, communication and collaboration.
Learn more: https://cdw.social/getthemostebook
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Together, CDW Education and Google Workspace for Education provide districts with the tools necessary to empower teachers and administrators to promote deeper learning and equip students to become more engaged at school, at home and on the go. Building a better classroom for tomorrow begins with Google Workspace for Education. Get started with the CDW K-12 Blueprint for Success e-book and transform the way you leverage educational technology today.
Download the K-12 Blueprint for Success: https://cdw.social/getthemostebook
#GoogleForEducation #EdTech #K12Education #K12IT
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How To Fast Track Your Reading Endorsement in Florida: Reading K-12 Test
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This is a recording of a recent webinar with did with over 500 teachers on the Subject Area Exam for Reading K-12 in the state of Florida.
Clear Up The Confusion & Pass Your Reading K-12 Test:
Oh....And Get Your Reading Endorsement
Join us for this free 90 minute webinar where we will show you how to pass your Subject Area Exam: Reading K-12 on your next attempt! This test can be confusing and we've got your back. We've been in your shoes and know how to get it passed quickly. Join us for this free webinar and learn the knowledge, skill and attitude needed to pass on your 1st attempt and get your Reading Endorsement (or next attempt if you have wasted your time and money on useless resources)!
Why take a series of reading classes if ALL YOU HAVE TO DO is pass this test to get your Reading Endorsement? Yep! That's the new option.
@TheLearningLiaisons
#whenYouPass #Reading #Florida
https://youtu.be/duE1sJePtMg
K 12 English Composing clear and coherent sentences using appropriate grammatical structure. Video lesson that can be used for reference based from deped's tg,cg and lm.
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/in-in-class-7th-m
Introduction to scientific notation. An in-depth discussion about why and how scientific notation is used.
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/e/scientific_notation_intuition?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/v/scientific-notation?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Missed the previous lesson?
https://www.khanacademy.org/math/pre-algebra/exponents-radicals/negative-exponents-tutorial/v/zero-negative-and-fractional-exponents?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!
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 KhanAcademy’s Pre-Algebra channel:: https://www.youtube.com/channe....l/UCIMlYkATtXOFswVoC
Subscribe to KhanAcademy: https://www.youtube.com/subscr....iption_center?add_us
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/hu....manities/world-histo
The attempted unification of church doctrine by Constantine through the Council of Nicaea. Especially resolving the Arian Controversy (based on the views of Arius of Alexandria). The Nicene Creed. Seeds of eventual schism in the church.
Missed the previous lesson? Watch here: https://www.khanacademy.org/hu....manities/world-histo
World History on Khan Academy: From the earliest civilizations to the modern world, geography, religion, trade, and politics have bound peoples and nations together — and torn them apart. Take a journey through time and space and discover the fascinating history behind the complex world we inhabit today.
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 KhanAcademy: https://www.youtube.com/subscr....iption_center?add_us
Structural isomers, stereoisomers, geometric isomers, cis-trans isomers, and enantiomers.
Watch the next lesson: https://www.khanacademy.org/science/biology/properties-of-carbon/hydrocarbon-structures-and-functional-groups/v/functional-groups?utm_source=YT&utm_medium=Desc&utm_campaign=biology
Missed the previous lesson? https://www.khanacademy.org/science/biology/properties-of-carbon/hydrocarbon-structures-and-functional-groups/v/hydrocarbon-overview?utm_source=YT&utm_medium=Desc&utm_campaign=biology
Biology on Khan Academy: Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascinating and intricate systems that make life possible. Dive in to learn more about the many branches of biology and why they are exciting and important. Covers topics seen in a high school or first-year college biology course.
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 Biology channel: https://www.youtube.com/channe....l/UC82qE46vcTn7lP4tK
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/precalculus/x9e81
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/precalculus/precalc-matrices/matrix_multiplication/e/defined_and_undefined_matrix_operations?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus
Watch the next lesson: https://www.khanacademy.org/math/precalculus/precalc-matrices/matrix_multiplication/v/matrix-multiplication-intro?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus
Missed the previous lesson?
https://www.khanacademy.org/math/precalculus/precalc-matrices/matrix_multiplication/v/multiplying-a-matrix-by-a-column-vector?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus
Precalculus on Khan Academy: You may think that precalculus is simply the course you take before calculus. You would be right, of course, but that definition doesn't mean anything unless you have some knowledge of what calculus is. Let's keep it simple, shall we? Calculus is a conceptual framework which provides systematic techniques for solving problems. These problems are appropriately applicable to analytic geometry and algebra. Therefore....precalculus gives you the background for the mathematical concepts, problems, issues and techniques that appear in calculus, including trigonometry, functions, complex numbers, vectors, matrices, and others. There you have it ladies and gentlemen....an introduction to precalculus!
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 Precalculus channel:
https://www.youtube.com/channe....l/UCBeHztHRWuVvnlwm2
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us