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What is the FSB and why is it so Feared? Teacherflix 6 Views • 2 years ago

2nd Channel: https://www.youtube.com/@simplehistory2
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Copyright: DO NOT translate and re-upload our content on Youtube or other social media.
The successor to the KGB, the FSB is Russia's latest internal security installment, reorganised to continue protecting its civilians and to stomp out any perceived dissent.

Made up mainly of the Border Guard Service, it specialises in military and foreign counterintelligence, counterterrorism, economic state security, and internet monitoring. But how do they operate, why do members call themselves by their early predecessor name the 'chekists', and why are they still significant today?

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

Narrator:

Jared Sager

“Beslan school siege: Russia 'failed' in 2004 massacre” April 13, 2017. BBC News.
Bruetsch, Nickolas. "The FSB: Sword and Shield of the Federation." August 30, 2021. TheSecurityDistillery
Corera, Gordon. Russians Among Us: Sleeper Cells, Ghost Stories, and the Hunt for Putin’s Spies. New York, New York, 2020.
Dear, I.C.B. and M.R.D Foot, editors. The Oxford Companion to World War II. Oxford: Oxford University Press, 1995.
Editors of Encyclopedia Britannica. “Okhranka,” Encyclopedia Britannica.
“Federal Security Service” GlobalSecurity.
Leigh, Numbers. Defecting from the FSB. Kindle Edition. July 16, 2021.
Pringle, Robert. “KGB” Britannica.
The Russian Government. “Federal Security Service.”
Sinai, Joshua. “The Terrorist Threats Against Russia and its Counterterrorism Response Measures.” Connections Vol. 14, No. 4 (Fall 2015), pp. 95-102.
Sinelschikova, Yekaterina. 'Dog-headed people': What was Ivan the Terrible's ‘Oprichnina Force. August 4, 2017. RussiaBeyond.

Graphs for Kids | Learn all about basic graphs Teacherflix 9 Views • 2 years ago

Do you know what a bar graph is? Or have you ever heard a pie chart? In Graphs for Kids, you and your kids will learn all about four basic graphs that people use to share data. You can use many types of graphs to display the same information. Sometimes it just depends on what you like best.

Pictographs use pictures to display data. For instance, if you studied how many students liked a specific field trip, you could create a pictograph to show the numbers. A certain picture would represent each student or a specific number of students. You could use a bar graph to share the same information. Instead of pictures, you would use bars, usually of different colors.

Another type of graph is the line graph. Line graphs are helpful in showing information over a period of time. For example, if you want to measure how tall you are at different ages, you can use a line graph to show your steady increase in height. The final graph you will learn about is actually called a pie chart. This is because it looks like a pie! The sizes of each "slice" depend on your data. If you interview 100 students about their favorite pet, and 50 of them like dogs the most, then half of the pie would represent students who prefer dogs.

We hope you and your student(s) enjoyed learning about these basic graphs! If you want even more information, head over to our website and download one of our many free lesson plans, full of activities, worksheets, and more!

https://learnbright.org/lessons/math/basic-graphs/
https://learnbright.org/lesson....s/math/introduction-

What you will learn in Graphs for Kids:
0:00 Introduction to graphs and how they work
0:33 Pictographs
1:04 How to read pictographs
1:57 Bar graphs and how to read them
3:09 Line graphs and how to read them
4:45 Pie charts and how to read them
5:39 What to do with what you learned

Thank you for watching and learning with us! We’re constantly releasing new content and videos, so click that “Subscribe” button and you’ll get notified.

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*Teachers and Parents! Did you know? In addition to these great videos, we have also created a library of high-quality and engaging lessons for your elementary aged student(s). Visit us and sign up for a free account, and you'll instantly have access to thousands of lesson plans, learning materials, teaching instructions, activities, and assignments that your kids will really enjoy! We hope to see you soon!

Browse our entire collection of Math lesson plans:
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#GraphsForKids
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The Map of Physics Teacherflix 7 Views • 2 years ago

Everything we know about physics - and a few things we don't - in a simple map.

#physics #DomainOfScience

If you are interested in buying a print you can buy it as a poster here:
North America: https://store.dftba.com/produc....ts/map-of-physics-po
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Also you can download a digital version here: https://www.flickr.com/photos/....95869671@N08/3097677

I made the music, which you can find on my Soundcloud if you'd like to get lost in some cosmic jam. https://soundcloud.com/dominicwalliman

Errata and clarifications.

I endeavour to be as accurate as possible in my videos, but I am human and definitely don’t know everything, so there are sometimes mistakes. Also, due to the nature of my videos, there are bound to be oversimplifications. Some of these are intentional because I don’t have time to go into full detail, but sometimes they are unintentional and here is where I clear them up.

1. “Isaac Newton invented calculus.” Actually there is controversy over who invented calculus first Isaac Newton or Gottfried Leibniz. Regardless of who it was I have used Leibniz’s mathematical notation here and so he definitely deserves credit. I did’t know about all this so thanks to those who pointed it out. https://en.wikipedia.org/wiki/....Leibniz%E2%80%93Newt
2. “Maxwell derived the laws of electromagnetism.” This is a simplification as Maxwell’s work was built on the backs of other scientists like Hans Christian Ørsted, André-Marie Ampère and Michael Faraday who discovered induction and saw that electricity and magnetism were part of the same thing. But it was Maxwell who worked out all the maths and brought electricity and magnetism together into a unified theory. https://en.wikipedia.org/wiki/....Electromagnetism#His
3. “Entropy is a measure of order and disorder”. This is also a simplification and this does a good job of explaining it better https://en.wikipedia.org/wiki/Entropy
4. Einstein and Quantum physics: I made it sound like quantum physics was built by people other than Einstein, but this couldn’t be further from the truth. Einstein got a Nobel prize for his work on the photoelectric effect which was a key result to show the particle-like nature of light. Funnily enough he never got a nobel prize for his work on Relativity!

Also, if you enjoyed this video, you will probably like my science books, available in all good books shops around the work and is printed in 16 languages. Links are below or just search for Professor Astro Cat. They are fun children's books aimed at the age range 7-12. But they are also a hit with adults who want good explanations of science. The books have won awards and the app won a Webby.

Frontiers of Space: http://nobrow.net/shop/profess....or-astro-cats-fronti
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Solar System App: http://www.minilabstudios.com/....apps/professor-astro

Find me on twitter, instagram, and my website:
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Volume of a sphere | Perimeter, area, and volume | Geometry | Khan Academy Teacherflix 3 Views • 2 years ago

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

Volume of a Sphere

Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/geometry/basic-geometry/volume_tutorial/e/volume-word-problems-with-cones--cylinders--and-spheres?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry

Watch the next lesson: https://www.khanacademy.org/math/geometry/basic-geometry/cross-sections/v/vertical-slice-of-rectangular-pyramid?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry

Missed the previous lesson?
https://www.khanacademy.org/math/geometry/basic-geometry/volume_tutorial/v/volume-cone-example?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry

Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That's a lot. To summarize: it's difficult to imagine any area of math that is more widely used than geometry.

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 Geometry channel:
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Defined and undefined matrix operations | Matrices | Precalculus | Khan Academy Teacherflix 5 Views • 2 years ago

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