So… baby teeth are pretty terrifying, huh?
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Teeth. We’ve all got ‘em (most of us, anyway). But how do they grow? Teeth are made from some biological nanotechnology that will blow your mind. They are strong enough to last hundreds of millions of years. Oh, and if you’ve ever wondered how adult teeth replace your baby teeth, get ready to see something terrifying.

Special thanks to Matthew Brown, Ph.D. and the University of Texas Vertebrate Paleontology Collection

Watch the tasty new series “Tacos of Texas” https://www.youtube.com/channe....l/UCdzQ_ilHPH3rQtgzo

REFERENCES:

Dr. Gareth J. Fraser, Department of Biology, University of Florida
Dr. Andrew Gillis, Department of Zoology, University of Cambridge

S.J. AlQahtani Et al. (2010) Brief Communication: The London Atlas of Human Tooth Development and Eruption. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 142:481–490

Teruel Jde D Et al. (2015) Comparison of chemical composition of enamel and dentine in human, bovine, porcine and bovine teeth. Archives of Oral Biology Volume 60, Issue 5 768-775

Hill, M.A. (2018) Embryology Timeline human development. https://embryology.med.unsw.ed....u.au/embryology/inde



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Today we're going to talk about a fundamental part of all modern computers. The thing that basically everything else uses - the Arithmetic and Logic Unit (or the ALU). The ALU may not have to most exciting name, but it is the mathematical brain of a computer and is responsible for all the calculations your computer does! And it's actually not that complicated. So today we're going to use the binary and logic gates we learned in previous episodes to build one from scratch, and then we'll use our newly minted ALU when we construct the heart of a computer, the CPU, in episode 7.

*CORRECTION*

We got our wires crossed with the Intel 4004, which we discuss later. The 74181 was introduced by Texas Instruments in 1970 but appeared in technical manuals around 1969. The design of the 74181, like most of the 74xx/74xxx series, was an open design which was manufactured by many other companies - Fairchild was one such manufacturer. They produced a chip, the Fairchild 9341, which was pin-for-pin compatible with the 74181.

Fairchild was the first to prototype an ALU, building the Fairchild 4711 in 1968 - a one-off device not optimized for scale manufacturing. In 1969, Signetics came out with the 8260, which they marketed in a very limited sense (it was attached, AFAICT, to one particular computer, the Data General SUPERNOVA). TI follows afterwards (March 1970) with the 74181, coupled with the 9341 from Fairchild. The 74181 became the standard number for this part, and was available from many manufacturers (back in those days, chip makers cross-licensed designs all over the place in order to provide assurance that their part could be sourced from multiple manufacturers).

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Discover what the four types of sentences are with Oliver, Chloe, Bella, and Elvis, as they take you around the petting zoo. The declarative Oliver never stops making simple statements and doling out information, while the interrogative Chloe has a never-ending list of questions. The imperative Bella can’t stop commanding or requesting, and the Exclamatory Elvis is a hoot with his excited utterances. With loads of examples briskly hopping in from every nook and cranny of the petting zoo in this video, identifying the types of sentences or differentiating between them will no longer be a Herculean task for kids. Learn to use appropriate punctuation marks: a period for declarative sentences, a question mark for interrogative sentences, and an exclamation point for exclamatory sentences. Get on board right away, ‘coz there’s so much to do at the petting zoo!
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PREMIERES! 👉 https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
THE EVOLUTION OF HUMAN BEINGS https://www.youtube.com/playli....st?list=PLLF_mZmNqOn

Learn about human evolution from australopithecus to homo sapiens sapiens!

To the tune of "The Wheels on the Bus" let's sing with Nina and JJ about how we wash the fire truck! Sing along with all of your CoComelon friends!
Subscribe for new videos every week!
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Lyrics:
VERSE 1
Now is the time to wash the truck.
Wash the truck,
Wash the truck,
Now is the time to wash the truck.
Let’s wash the truck together.

VERSE 2
First we take the hose and spray, spray, spray
Spray, spray, spray
Spray, spray, spray
First we take the hose and spray, spray, spray
Let’s wash the truck together
VERSE 3
Next we take the soap and scrub, scrub, scrub
Scrub, scrub, scrub
Scrub, scrub, scrub
Next we take the soap and scrub, scrub, scrub
Let’s wash the truck together.

VERSE 4
Next we take the hose and rinse, rinse, rinse
Rinse, rinse, rinse
Rinse, rinse, rinse
Next we take the hose and rinse, rinse, rinse
Let’s wash the truck together

VERSE 5
Next we take the towels and dry, dry, dry
Dry, dry, dry
Dry, dry, dry
Next we take the towels and dry, dry, dry
Let’s wash the truck together.

VERSE 6
Next we take the wax and polish, polish, polish
Polish, polish, polish
Polish, polish, polish
Next we take the wax and polish, polish, polish
Let’s wash the truck together
VERSE 7
Now we are done, and it’s all clean
It’s all clean
It’s all clean
Now we are done, and it’s all clean
We did it all together.


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https://www.youtube.com/watch?v=4t5WI5RF67Y&list=PLT1rvk7Trkw4QbgqgSEJjJz3HIewomqdS
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About CoComelon:

Where kids can be happy and smart!

CoComelon’s 3D animation and songs create a world that centers on the everyday experiences of young children.
In addition to helping preschoolers learn letters, numbers, animal sounds, colors, and more, the videos impart prosocial life lessons, providing parents with an opportunity to teach and play with their children as they watch together.

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AI Professor App Demo | Build Your Own AI Teacher Website (Students Pay You!

AI Professor is a world’s first AI-powered education app that lets you create human-like AI teachers who can speak, explain, present, and answer questions on any topic—just like a real professor.

Get Access Here: https://warriorplus.com/o2/a/f7c974r/0

Powered by advanced GPT-class language models, AI Professor allows you to build your own AI teacher website where students can learn, study, and ask questions—and pay you to access it.

With AI Professor, everything is 100% done-for-you, making it perfect for:

Read Review Article: https://surl.li/prmsbt

Online course creators

Coaches & educators

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🚀 Key Features of AI Professor:

✔ Create human-like AI teachers
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✔ Teach ANY topic instantly
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✔ Build a complete AI teacher website
✔ Students pay to learn & ask questions
✔ No teaching experience required
✔ 100% done-for-you system

If you’re looking for the best AI teaching app, AI professor software, or a way to monetize AI education, this AI Professor review will show you exactly how it works.

👉 Watch till the end for full demo, features, and bonuses!

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Hashtags:

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Today, we’re going to look at how computers use a stream of 1s and 0s to represent all of our data - from our text messages and photos to music and web pages. We’re going to focus on how these binary values are used to represent numbers and letters and discuss how our need to perform operations on more extensive and more complex matters brought us from our 8-bit video games to beautiful Instagram photos, and from unreadable garbled text in our emails to a universal language encoding scheme.

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Get My NEW AI Pro v2.0 Course 👉 https://alexanderfyoung.com/7-....day-ai-prompt-engine

Get the prompt cheat sheet 👉 https://join.alexanderfyoung.com/chatgptstudying

ChatGPT is incredibly powerful but most people have only just scratched the surface.

ChatGPT has some amazing applications for students studying that will make you more productive when it comes to preparing for exams or getting coursework completed.

If you want to get the most out of ChatGPT and create original and impactful content you'll want to check out these prompts for learners. So here are 13 ChatGPT prompts for studying so you can study smarter, not harder.
#gpt #studytips #chatgpt

13 ChatGPT Prompts For Studying

Get The Studying Prompts: https://join.alexanderfyoung.com/chatgptstudying

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00:42 - Technique 1
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04:08 - Technique 7
04:45 - Technique 8
05:24 - Technique 9
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07:56 - BONUS Technique 14
08:20 - BONUS Technique 15

//WHO I AM
👨‍⚕️ Dr Alex Young
Hey I'm Alex, I'm a surgeon and the founder and CEO of a few ed-tech companies and I'm obsessed with human performance, learning and productivity. I also write for Entrepreneur and Forbes and invest in early stage companies with a focus on education technology and health technology sectors.
#alexyoung

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How to Learn ANYTHING with ChatGPT AI
How To Study Using ChatGPT
Study Smarter With ChatGPT
Learn Anything FASTER With ChatGPT (13 ChatGPT Study Prompts)

Practice Your Spanish With Chateo - a Spanish-speaking chatbot! | Get a discount off your first 6 months with code CHATEOBOT | Sign up at: https://www.senorjordan.com/chat
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Hola. In this lesson we'll be covering how we use Double Object Pronouns (Direct and Indirect Object Pronouns) in Spanish. Don't forget to check out some of my other videos on this series to practice them!

To practice Double Object Pronouns, click here:
http://www.youtube.com/watch?v=ycOEBy59pEM

To practice Double Object Pronouns more, click here:
http://www.youtube.com/watch?v=oTkpnZ1ypPQ

To practice Double Object Pronouns even more, click here:
http://www.youtube.com/watch?v=MDPdxIvDTgU

To practice Double Object Pronouns yet even more, click here:
https://www.youtube.com/watch?v=fhq0ju_4GHI

¡Gracias por mirar!

The world is full of strange and beautiful natural phenomena - glowing skies, mysterious lights, fireballs from rivers, and clouds that defy explanation. These videos explore the rarest and weirdest things nature creates, from ball lightning and red auroras to endless rains and vanishing shadows. Discover how science tries to explain them and where mystery still wins. Perfect for anyone who loves nature, science, and the unexplained.
Animation is created by Bright Side.
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Check our Bright Side podcast on Spotify and leave a positive review! https://open.spotify.com/show/....0hUkPxD34jRLrMrJux4V
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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.

Educational video for children to learn what senses are and how they work: taste, touch, sight, hearing and smell. The sense of taste allows us to identify and recognize the flavor of food. The sense of touch allows us to detect, identify and distinguish among the qualities of an object and the world around us. Thanks to the sense of sight we are able to see the objects that surround us. The sense of hearing allows us to hear sounds and the sense of smell helps us detect smells. All senses are related to different organs and each one of them helps us to understand the world and enjoy the things we like or identify potential dangers. This is a video compilation of the five senses for kids, perfect for elementary school.

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.

All of our content reinforces educational values, encouraging the use of multiple intelligences and language learning.

If you like our videos, download Smile and Learn now. You’ll discover more than 5.000 activities for children aged 3 to 12 yeards, all designed by educators. We have 250 games and interactive stories and over 280 videos in five languages: English, Spanish, Portuguese, Italian and French. Try a month for free and start the adventure!

Kids vocabulary - Action Verbs - Action Words - Learn English for kids: Fly, sleep, drive, laugh, eat, walk, run, cry, jump

👋 Welcome to our exciting educational journey! In this engaging YouTube video, we present a delightful compilation of 250+ basic verbs in English, specially designed for children. 🌟

Join us as we embark on a colorful learning adventure, where your little ones will discover and practice common verbs in a playful and interactive way. From "jump" to "run," "sing" to "eat," our video is packed with vibrant visuals and cheerful animations that make language learning a joy for kids.

This educational content is carefully crafted to enhance vocabulary, promote language development, and foster a love for learning in young minds. Our approach combines entertainment with education, ensuring that the learning process is both effective and enjoyable.

Watch as your children actively engage with the video, absorbing essential verbs effortlessly while having a blast. Whether they are toddlers or early elementary students, this video caters to a wide age range, making it a perfect addition to any learning routine.

Spark your child's curiosity and ignite a passion for language with our 250+ basic verbs in English video! Press play, subscribe for more educational content, and let the learning fun begin! 🚀📝

Discover hundreds of never-before-seen resources! Create your free account at https://my.happylearning.tv/ and start learning in the most entertaining way.

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

Watch more video testimonials and preview our site/app content by subscribing to our YouTube channel: https://YouTube.com/ABCmouse.

© Age of Learning, Inc. All rights reserved.

Student pairs are given 10 minutes to create the biggest box possible using one piece of construction paper. Teams use only scissors and tape to each construct a box and determine how much puffed rice it can hold. Then, to meet the challenge, they improve their designs to create bigger boxes. They plot the class data, comparing measured to calculated volumes for each box, seeing the mathematical relationship. They discuss how the concepts of volume and design iteration are important for engineers. Making 3-D shapes also supports the development of spatial visualization skills. This activity and its associated lesson and activity all employ volume and geometry to cultivate seeing patterns and understanding scale models, practices used in engineering design to analyze the effectiveness of proposed design solutions.

View the full activity at TeachEngineering: https://www.teachengineering.o....rg/activities/view/c

TeachEngineering has over 1,500 FREE lessons and activities. Visit http://www.TeachEngineering.org for more!

Music: Milos - Eveningland

🚀 Become an AI Master – All-in-one ChatGPT Learning https://aimaster.me/pro

In this video I explore how Sam Altman’s hints about GPT-4.5 and GPT-5 are reshaping the AI landscape. You’ll discover the key differences between GPT-4.5 and GPT-5, learn why OpenAI’s next release could unify “fast” and “thoughtful” AI models, and find out how chain-of-thought reasoning could change everything from creative writing to complex problem-solving. I also discuss the biggest challenges OpenAI has faced during GPT-5’s development—from massive data requirements to persistent engineering snags—and why this model might feel closer to AGI than any chatbot yet.

Chapters:
0:00 - Introduction
0:24 - Timeline
3:20 - Release date
3:38 - Why the Wait?
5:01 - More problems
7:25 - The Big & The Bigger
8:41 - A solution
9:38 - New Architecture
11:32 - Deeply Multimodal Interaction
12:34 - Built-in Operator & Scheduling Features
13:23 - Personalization & Persistent Memory
14:11 - Larger Context Windows
14:56 - Visual Planning & Collaboration (Canvas)
16:13 - Will GPT-5 Feel Like AGI?
17:31 - Why GPT-5 Matters
18:35 - It's Almost Here

This week Craig continues our conversation on presidential powers by looking at those NOT found in the Constitution - implied or inherent powers. We’ll talk about how the President uses their power to negotiate executive agreements, recommend legislative initiatives, instate executive orders, impound funds, and claim executive privilege in order to get things done. Implied powers are kind of tough to tack down, as they aren’t really powers until they’re asserted, but once they are, most subsequent Presidents chose not to give them up. So we’ll try to cover those we’ve seen so far and talk a little bit about reactions to these sometimes controversial actions from the other branches of Congress.

Support is provided by Voqal: http://www.voqal.org
This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse

Chapters:
Introduction: Informal Powers of the President 00:00
Informal powers of the President 0:50
Inherent power to use troops 1:20
War Powers Resolution 2:23
Executive agreements vs. treaties 2:42
CEO of the U.S. 3:31
Legislative Initiative 4:18
Executive orders 5:20
Impounding funds 6:02
Executive privilege 6:20
The importance of presidential precedent 6:56
Credits 7:21

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

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HOW TO LEARN & Master AI in 2026 ? (Complete Powerful 7-step ROADMAP) #ai #artificialintelligence #howtolearnai #learnai #masterai #aiexplained #aiforbeginners #ai2026 #tejasai #2026

Join Our Discord Server :- https://discord.gg/2abyjxr4v6

🚀 The COMPLETE AI Learning Roadmap for 2026 - From Zero to AI Expert

Stop wasting time on scattered tutorials and incomplete courses. Everyone tells you to "understand AI" and "use tools," but nobody shows you the EXACT step-by-step roadmap to actually master AI from scratch.

Today, I'm breaking down the complete 7-step roadmap that people sell for hundreds of dollars—absolutely FREE. This is the same path I'm using to learn AI, and it's proven, effective, and gives you a clear direction in the world's most powerful technology.

What You'll Learn:
✅ The exact 7-step roadmap to master AI systematically
✅ Why basics matter more than jumping into ChatGPT immediately
✅ Python essentials for AI (without becoming a coding expert)
✅ Machine Learning fundamentals explained in simple terms
✅ Deep Learning and Neural Networks demystified
✅ How to build real AI projects that showcase your skills
✅ Mastering Generative AI, LLMs, and modern tools
✅ Choosing your specialization and building a killer portfolio

🎯 The 7-Step AI Learning Roadmap:

Step 1: Master the Basics
Stop jumping around until your fundamentals are crystal clear. Understand what AI, Machine Learning, Neural Networks, Gen AI, Agentic AI, and LLMs actually mean—not just the buzzwords, but how they work and their real-world applications. A weak foundation = a collapsing empire.

Step 2: Learn Python - AI's Main Language
You don't need to become a Python expert. Just master the essentials: variables, if/else, loops, functions, lists, dictionaries, NumPy, and pandas. Think of Python as your paintbrush—simple to learn, powerful to use. Spend 2-3 weeks coding daily.

Step 3: Dive Into Machine Learning
This is where real AI learning begins. Understand supervised vs unsupervised learning, linear regression, classification, clustering, overfitting, and evaluation metrics. Work with real datasets—predict house prices, classify data, analyze patterns. Get your hands dirty.

Step 4: Deep Learning & Neural Networks
The advanced version of ML. Learn about neural networks, layers, CNNs, transformers, backpropagation, and training loops. Master PyTorch or TensorFlow. Build image classifiers and text models. This is where computers learn to see, hear, and understand like humans.

Step 5: Build Real Projects
Theory means nothing without practice. Build image classifiers, voice-to-text models, sentiment analyzers, fake news detectors, and recommendation systems. Projects transform knowledge into skill. Document everything—your portfolio is your proof.

Step 6: Master Gen AI, Tools & LLMs
Connect everything to modern Generative AI. Learn prompt engineering, embeddings, and how LLMs work. Use ChatGPT, Midjourney, Runway, and ElevenLabs. Build chatbots, PDF Q&A bots, and content generators using APIs. Join the cutting edge.

Step 7: Specialize & Build Your Portfolio
Pick your track: AI/ML Engineer, Data Scientist, or Gen AI Expert. Become irreplaceable in your niche. Build 5-10 projects showcasing your specialization. Share on GitHub, write blogs, create tutorials. Build in public.

💡 Key Takeaway:
AI isn't complicated—it just needs a clear roadmap. This journey takes months of consistent effort, not genius. You'll never feel "ready," but you don't need to know everything to create value. The time to start is NOW.

🔥 Why This Matters:
→ AI is transforming every industry—healthcare, finance, entertainment, education
→ 70% of AI professionals don't have CS backgrounds—they learned strategically
→ AI literacy will be as common as computer literacy soon
→ The opportunities today are unprecedented—but they won't last forever
→ Start messy, start imperfect, but START TODAY

👉 Ready to Transform Your Future?
Don't wait for the perfect starting point. The AI revolution is happening NOW. Start with one step, one project, one small action. Your future self is counting on you.

"AI isn't about being a genius. It's about consistency, patience, and showing up every single day."
Start your AI mastery journey today! 🚀

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- Tejas AI

Today Hank talks about your central nervous system. In this episode, we'll explore how your brain develops and how important location is for each of your brain's many functions.

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
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Chapters:
Introduction: Broca's Aphasia 00:00
Central Nervous System Structure & Function 1:48
Brain Development: Neural Tube 3:27
Brain Development: 3 Primary Vesicles 3:47
Brain Development: 5 Secondary Vesicles 4:04
Brain Development: Major Adult Brain Regions 4:18
Brain Development: Cerebellum & Brain Stem 4:42
Brain Development: Reptilian Brain 5:45
Brain Development: Cerebral Hemispheres 6:35
The Brain's Lobes 7:35
Review 9:14
Credits 9:48

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Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever:

Creatrix Tiara
Dr. Sarah Hinzman
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Ariana Flewelling (@EdTechAri)

Did you know that centrifugal force isn't really a thing? I mean, it's a thing, it's just not real. In fact, physicists call it a "fictitious force." Mind blown yet? To explore this idea further, this week Shini sits down with us to discuss centripetal force, centrifugal force, and a few other bits of physics to help us understand uniform circular motion.


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

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


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MORE HISTORY https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
LONG VIDEOS https://www.youtube.com/playli....st?list=PLLF_mZmNqOn

🏛️📜 Explore the great civilizations of Ancient History! In this educational video for primary school children, you'll travel through time to discover how the Egyptians, Greeks, and Romans lived. Learn about their inventions, lifestyles, cultures, and the legacy they left behind. 🏺⚖️⛵

History in Primary School allows children to learn about and understand the past in order to make sense of the present and build the future. From Prehistory, Ancient Egypt, and the Roman Empire, to the Middle Ages, great discoveries, and revolutions — each video is designed to make learning dynamic and exciting.

They will learn how societies have evolved, how inventions and advancements have transformed the world, and why understanding history helps us make better decisions.

📖 SUBJECT PLAYLISTS
🦖⛰️🐅 NATURAL SCIENCES for Primary School: https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
👨‍🏫 SOCIAL SCIENCES for Primary School: https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
➕✖️ MATH for Primary School Children: https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
🤴🏰 HISTORY for Primary School Children: https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
🌍⛰️ GEOGRAPHY for Primary School Children: https://www.youtube.com/playli....st?list=PLLF_mZmNqOn
🤝😊 Values and Emotions for Primary School Children: https://www.youtube.com/playli....st?list=PLLF_mZmNqOn v=KkCIIQyevjo&list=PL_Y3qbepMRoY7gwuwniiq11oMo6Ofe724

🌍 THE HAPPY LEARNING UNIVERSE

✅ Learn more about Happy Learning and our educational platform: https://happylearning.tv/en/

✅ Discover our social mission: https://happylearning.tv/en/nemesio-diez-foundation/

✅ Download the Happy Learning App:
- iOS: https://apps.apple.com/es/app/....happy-learning-tv/id
- Android: https://play.google.com/store/apps/details?id=tv.happylearning.canal&pli=1

🎓 ABOUT HAPPY LEARNING
Happy Learning is a social enterprise created by the Nemesio Diez Foundation, working to improve people's quality of life through education, health, sports and culture.

As a social company, our mission is to educate all children in the world in values and knowledge, to promote their holistic development and their commitment to society and the planet.

We offer educational resources to families, schools, hospitals and NGOs to ensure that children everywhere have access to a high-quality, comprehensive education.

At Happy Learning, we turn learning into an exciting adventure for primary school children. 🚀
We offer over 2,000 educational resources that combine fun and learning through animated videos, reading materials, interactive games and real-world activities.

📺 HAPPY LEARNING YOUTUBE CHANNEL

Welcome to Happy Learning! 🚀📚
The educational channel where learning is an adventure. Our goal is to spark curiosity and a love for knowledge in primary school children through fun and dynamic educational videos.

Discover the fascinating world of science with videos on Dinosaurs, the Solar System, Invertebrate Animals, Arachnids and much more. Travel back in time with history videos covering Prehistory, the Discovery of America or Ancient Egypt. Learn geography with content about The Earth and Its Movements, the Water Cycle and Parts of the Earth. Strengthen math skills with videos on Multiplication, Subtraction and Matter and Its Properties, and improve Spanish language understanding with lessons on Nouns, Sentences and Subject and Predicate.

Happy Learning transforms education into an exciting experience through animated videos, clear explanations and interactive activities. Perfect for children, parents and teachers seeking high-quality educational content.
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