Radio, Cinema, and Television have been staples in news coverage, entertainment, and education for almost 100 years. But... where did they all come from? Who started what and when and why? In this episode, Hank Green talks to us about their birth and a dead elephant.

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In times of war, desperate measures are sometimes needed to be taken and nations would turn to the criminal elements of society to swell the ranks of their Armed Forces. Whether coerced, motivated by patriotism or by a sense of redemption, or something darker, those convicted of crimes have played an important role in warfare even to the current day.

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Created by Daniel Turner (B.A. (Hons) in History, University College London)

Narrator:

Chris Kane
https://vocalforge.com/

Figuring out the volume of a function rotated about the x-axis.
More free lessons at: http://www.khanacademy.org/video?v=R_aqSL-q6_8

Educational video for kids in which they will learn three fundamental concepts for their emotional well-being: self-awareness, self-image, and self-esteem.

We will accompany our protagonist and Smilie in a fun and relatable reflection on what it means to know ourselves, how we see ourselves, and how we feel about who we are. In this video, we will discover:

🧭 What self-awareness is and how it helps us understand our emotions, thoughts, and behaviors
🪞 What self-image is and how it changes over time
💗 What self-esteem is, how we cultivate it, and why it is so important to take care of it

An ideal tool for working on emotional education in the classroom or at home and fostering self-confidence and self-respect.

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simple interest

Hellriegel 1915 (Secret Weapon)

The Standschütze Hellriegel 1915 was an Austro-Hungarian prototype submachine gun developed in 1915. Little is known about this weapon.

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Credit:

Narrator:

Chris Kane

http://ckvox.com/

Animation:
Daniel Turner

Research and script:

Mike Edge

Artwork:
Daniel turner

Images:

From Public Domain

http://www.europeana.eu/portal/en

Music Credit

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

Learn letters A to Z with our ABC song. Make alphabet learning fun for kids, the ABCD song is filled with fun instrumental music. 🥰 The best way to teach children ABC's is by introducing fun elements through educational toddler learning videos. Toddlers, preschoolers, and kindergarteners will love watching 🦁 Lucas and Ruby 🐰 dance to this ABCD song.

Watch our ABC Song in ultra HD 4k. ✏️ The best part of our ABC Alphabet learning video for children is that it teaches your child ABC's without them knowing that they are learning. ✔️ ABC song is an ideal baby video for preschool learning.

⭐ RV AppStudios is thrilled to add our newest ABC dance 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! 🔥

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/ap-calculus-ab/ab


Differential calculus on Khan Academy: Limit introduction, squeeze theorem, and epsilon-delta definition of limits.

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

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We're thinking about the probability of rolling doubles on a pair of dice. Let's create a grid of all possible outcomes.

Watch the next lesson: https://www.khanacademy.org/math/precalculus/prob_comb/independent_events_precalc/v/lebron-asks-about-the-chances-of-making-10-free-throws?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus

Missed the previous lesson?
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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

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This concise tutorial walks you through the process of calculating the dot product of two vectors using GeoGebra. In just a few simple steps, you'll learn how to input vector coordinates, visualize them graphically, and effortlessly find the result. It's perfect for students, math enthusiasts, or anyone curious to explore how GeoGebra can simplify practical and educational tasks.
https://www.stemkb.com/dot-pro....duct-with-geogebra.h

In this video I explain all the basics of particle physics and the standard model of particle physics. Check out Brilliant here: https://brilliant.org/DOS/
Buy the poster here: https://store.dftba.com/collec....tions/domain-of-scie
Digital version here: https://www.flickr.com/photos/95869671@N08

The standard model of particle physics is our fundamental description of the stuff in the universe. It doesn’t answer why anything exists, but does describe what exists and how it behaves, and that’s what we’ll be discovering in this video. We will cover the fermions, which contain the quarks and the leptons, as well as the bosons or force carriers. As well as which of the fundamental forces each of these fundamental particles interact with, along with the Higgs field. We’ll also look at the conservation rules of particle physics, symmetries in physics and the various quantum numbers that rule which particle interactions are valid and which are not.

#particlephysics #standardmodel #DomainOfScience

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--- My Science Books ----
I also write science books for kids called Professor Astro Cat. You can see them all here:
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--- Credits ---
Art, animation, presented by Dominic Walliman

References
[1] good summary
https://physics.info/standard/
[2] CPT symmetry
en.wikipedia.org/wiki/CP_violation
[3] Arvin Ash video
https://youtu.be/gkHmXhhAF2Y
[4] Conservation rules video
https://www.youtube.com/watch?v=dkFr3BGO8Dg
[5] More conservation rules
https://www.youtube.com/watch?v=qbf7y7Uv6d4
[6] Particle conservation laws
https://bit.ly/3pIb05M
[7] Short explanation of spin
https://bit.ly/2R7UIGV
[8] Short video explaining spin
https://youtu.be/cd2Ua9dKEl8
[9] Pauli exclusion principle
https://bit.ly/3mr4bF5
[10] The failure of supersymmetry
https://bit.ly/3uumFHn
[11] A nice summary of CP-symmetry
https://bit.ly/3t5WmqS

--- Chapters ---
00:00 Intro
00:28 What is particle physics?
01:33 The Fundamental Particles
02:13 Spin
3:52 Conservation Laws
5:01 Fermions and Bosons
7:40 Quarks
11:12 Color Charge
14:13 Leptons
16:39 Neutrinos
19:08 Symmetries in Physics
21:56 Conservation Laws With Forces
23:07 Summary So Far
23:36 Bosons
25:48 Gravity
26:52 Mysteries
28:24 The Future
29:08 Sponsor Message
30:12 End Ramble

A short introduction to the chain rule as well as three examples.

Two examples include functions that only contain two nested functions. The final example goes over how to use the chain rule when a function contains three or more nested functions.

#ChainRule
#Derivatives
#ChainRuleExamples
#DerivativeExamples
#JoeCMath

0:00 Introduction
0:34 Example 1
1:28 Example 2
2:27 How to handle a function with multiple layers
4:42 Joe likes when you subscribe!

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/ma....th/linear-algebra/ve

Parametric Representations of Lines in R2 and R3

Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/linear_combinations/v/linear-combinations-and-span?utm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra

Missed the previous lesson?
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Linear Algebra on Khan Academy: Have you ever wondered what the difference is between speed and velocity? Ever try to visualize in four dimensions or six or seven? Linear algebra describes things in two dimensions, but many of the concepts can be extended into three, four or more. Linear algebra implies two dimensional reasoning, however, the concepts covered in linear algebra provide the basis for multi-dimensional representations of mathematical reasoning. Matrices, vectors, vector spaces, transformations, eigenvectors/values all help us to visualize and understand multi dimensional concepts. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.

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 Linear Algebra channel:: https://www.youtube.com/channe....l/UCGYSKl6e3HM0PP7QR
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#practicereadingenglish #teacherayaonlinetutor #shortstory
This reading lesson will help kids develop their reading skills. Kids are expected to become fast readers and comprehend different English words throughout this reading lesson.
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Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/vectors/e/scaling_vectors?utm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra

Watch the next lesson: https://www.khanacademy.org/math/linear-algebra/vectors_and_spaces/vectors/v/real-coordinate-spaces?utm_source=YT&utm_medium=Desc&utm_campaign=LinearAlgebra

Linear Algebra on Khan Academy: Have you ever wondered what the difference is between speed and velocity? Ever try to visualize in four dimensions or six or seven? Linear algebra describes things in two dimensions, but many of the concepts can be extended into three, four or more. Linear algebra implies two dimensional reasoning, however, the concepts covered in linear algebra provide the basis for multi-dimensional representations of mathematical reasoning. Matrices, vectors, vector spaces, transformations, eigenvectors/values all help us to visualize and understand multi dimensional concepts. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.

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 Linear Algebra channel:: https://www.youtube.com/channe....l/UCGYSKl6e3HM0PP7QR
Subscribe to KhanAcademy: https://www.youtube.com/subscr....iption_center?add_us

Ever wonder why we aren’t exact clones of our parents, or why siblings aren’t exactly alike? The reason traces back to meiosis. In this episode of Crash Course Biology, we’ll discover how egg and sperm cells get made and learn why you’re a totally unique remix of your parents’ DNA.

Introduction: Why Are We All Unique? 0:00
Gametes 1:33
Meiosis 4:09
The Phases of Meiosis 4:44
Nondisjunction 7:14
Why We Aren't Clones 8:18
Meiosis & Genetic Diversity 9:49
Review & Credits 11:32

This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit https://BioInteractive.org/CrashCourse for more information.

Check out our Biology playlist here: https://www.youtube.com/playli....st?list=PL8dPuuaLjXt

Watch this series in Spanish on our Crash Course en Español channel here: https://www.youtube.com/playli....st?list=PLkcbA0DkuFj

Sources: https://docs.google.com/docume....nt/d/1GLDtAXE6ekg4Ch

***
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In this lesson, we will explore the Side Angle Side (SAS) and Angle Side Angle (ASA) triangle congruence theorems.

Tags: triangle sas,triangle asa,proving triangles congruent proofs,proving triangles congruent sss sas,proving triangles congruent by sss sas asa and aas,proving triangles congruent sas,triangle proofs sss sas asa aas,triangle proofs khan academy,triangle proofs explained,triangle proofs reasons,side angle side geometry,side angle side triangle,side angle side theorem,angle side angle,side angle side,angle side angle congruence,angle side angle theorem proof

#MashupMath​

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In this video your students and kids will learn how animals are classified into different groups. Classification breaks very large groups down into smaller groups. This makes them easier to be studied. Scientists classify animals, plants and insects based on things they have in common. Just like kids would do with their toys!

Taxonomy means to classify living things. Scientists and biologists use a taxonomy chart to classify all the organisms on Earth. This chart includes the following groups: Domain, Kingdom, Phylum, Class, Order, Family, Genus and Species. Throughout the video we will learn about the different taxonomies, how animals are classified and spend a little more time on vertebrates and invertebrates. By the end you kid will have a more solid understanding of what makes animals different and may be able to classify them into their proper taxonomies.

Would you like even more Animal Classification Learning resources? Download our free comprehensive lesson plans here: https://learnbright.org/?s=animal+classification here you'll find access to lots more content, worksheets, learning activities and more.

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Learn about what reflexive pronouns are and how to use them.

We hope you are enjoying this video! For more in-depth learning, check out Miacademy.co (https://www.parents.miacademy.co/), an online learning platform with lessons and practice games that go along with our videos. Use coupon code VIDEOSPECIAL for a discount. Good for homeschoolers, Parents, Teachers, or anyone with kids in grades K-8.

Miacademy also offers many hands-on learning activities including a business simulation, writing in the Miacademy weekly, and creating artwork. Teaching social skills is also one of the key values at Miacademy. On the site, kids can interact safely in a moderated environment and share their artwork, videos, and ideas with each other.