Hank introduces us to comparative anatomy, which studies the similarities and differences in animal anatomy to support the theory of evolution and the shared ancestry of living things.

References:
Campbell Biology, 9th ed.
CliffsAP Biology, 3rd ed.
Thomas Henry Huxley: http://www.strangescience.net/huxley.htm
Tissues: http://web.jjay.cuny.edu/~acar....pi/NSC/14-anatomy.ht
Divergence time estimates for the early history of animal phyla...
http://www.ncbi.nlm.nih.gov/pm....c/articles/PMC168965

Table of Contents:
1) Comparative Anatomy 0:00
2) Locomotion 1:19
3) Heterotophy 1:41
4) Convergent Evolution 2:40
5) Biolography 3:40
6) Tissues 6:00
a) Epithelial Tissue 6:11
b) Connective Tissue 6:33
c) Muscle Tissue 7:01
d) Nerve Tissue 7:14
7) Organs 7:32
8) Organ Systems 7:39


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

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We learn a lot about our surroundings thanks to sound. But... what is it exactly? Sound, that is. What is sound? And how does it travel? And what is this doppler effect that we've heard so much about? In this episode of Crash Course Physics, Shini goes over some of the basics (and some of the not-so-basics) of the Physics of Sound.

--

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

--

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This chemistry video tutorial focuses on molarity and dilution problems. It shows you how to convert between molarity, grams, moles, and liters.

Stoichiometry Practice Test: https://www.youtube.com/watch?v=mP2Yg8alyR0

Solute, Solvent, & Solution:
https://www.youtube.com/watch?v=MDHlaTHbEgM

Strong & Weak Electrolytes:
https://www.youtube.com/watch?v=2U2DBWWo6nc

Molarity Practice Problems:
https://www.youtube.com/watch?v=o_iETsDSvkg

Ion Concentration In Solutions:
https://www.youtube.com/watch?v=H5S4TRAzXhQ

Dilution Problems:
https://www.youtube.com/watch?v=FPidlCmymVg

___________________________________
Types of Chemical Reactions:
https://www.youtube.com/watch?v=iIJD8RNLpS0

Solubility Rules:
https://www.youtube.com/watch?v=LnGIKtx_udE

Predicting The Products of Reactions:
https://www.youtube.com/watch?v=MYmrWHzT1oI

Activity Series of Metals:
https://www.youtube.com/watch?v=VatDpKMJ-BU

Will This Reaction Occur?
https://www.youtube.com/watch?v=ACSKrg2RBmY

Predicting Products of SR Reactions:
https://www.youtube.com/watch?v=s4OFBa7Uans

___________________________________
Double Replacement Reactions:
https://www.youtube.com/watch?v=d8vWIGf2mGE

Net Ionic Equations:
https://www.youtube.com/watch?v=0jhNouV9TNo

Writing Chemical Equations From Words:
https://www.youtube.com/watch?v=npyvZSBqyc0

Solution Stoichiometry:
https://www.youtube.com/watch?v=Ab3wfKjaWWQ

Molarity & Dilution Problems:
https://www.youtube.com/watch?v=-4E6rOkiw2I

Acid Base Neutralization Reactions:
https://www.youtube.com/watch?v=UfTJrAPjeys

____________________________________
Acid Base Titration Problems:
https://www.youtube.com/watch?v=HJvALCcKYAc

Mixture Problems:
https://www.youtube.com/watch?v=e2FAAMlAJ3c

Calculating Oxidation Numbers:
https://www.youtube.com/watch?v=j0hI-a6EWWo

Oxidation and Reduction Reactions:
https://www.youtube.com/watch?v=dF5lB7gRtcA

Balancing Redox Reactions:
https://www.youtube.com/watch?v=fdbrhQAM9Gw

Ideal Gas Law Problems:
https://www.youtube.com/watch?v=iaZ96KaQ44c

___________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio

This calculus video tutorial provides a basic introduction into the derivatives of trigonometric functions such as sin, cos, tan, sec, csc, and cot. It contains plenty of practice problems.

Derivatives - Fast Review: https://www.youtube.com/watch?v=5yfh5cf4-0w&t=1s

Limit Definition of the Derivative:
https://www.youtube.com/watch?v=-aTLjoDT1GQ

Derivatives - Alternate Limit Definition:
https://www.youtube.com/watch?v=6yzaEpacZkg

Derivatives - The Constant Rule:
https://www.youtube.com/watch?v=cyn6CDnAlcA

Derivatives - The Power Rule:
https://www.youtube.com/watch?v=9Yz-RCdS2Tg

_________________________________
Derivatives - Constant Multiple Rule:
https://www.youtube.com/watch?v=ut-AFj600S0

Derivatives - Polynomial Functions:
https://www.youtube.com/watch?v=8Sv6CNuNwqo

Derivatives - Sine and Cosine:
https://www.youtube.com/watch?v=QYJx-ztCrE4

Derivatives - Trigonometric Functions:
https://www.youtube.com/watch?v=PEqCa0U77mc

Derivatives - Limits:
https://www.youtube.com/watch?v=xGibYZiT5-U

_______________________________________
Equation of the Tangent Line:
https://www.youtube.com/watch?v=5NyeGzbBJQM

Derivatives - Horizontal Tangent Line:
https://www.youtube.com/watch?v=aNfoxbMUOHk

The Equation of The Normal Line:
https://www.youtube.com/watch?v=lEF2mmR3CWU

The Equation of The Secant Line:
https://www.youtube.com/watch?v=680o1GL-LRg

Average and Instantaneous Velocity:
https://www.youtube.com/watch?v=AwxT1xjMP9g

_______________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio

This statistics video tutorial explains when you should use a one tailed test vs a two tailed test when solving problems associated with hypothesis testing. It all depends on the statement associated with the alternative hypothesis. This video also discusses the critical values and significance level associated with hypothesis testing.

Confidence Intervals & Margin of Error:
https://www.youtube.com/watch?v=DT-fPG0Hff8

Find The Z-Score Given Confidence Interval:
https://www.youtube.com/watch?v=sJyZ9vRhP7o

Student's T-Distribution:
https://www.youtube.com/watch?v=MUD390jtgQs

Hypothesis Testing - Null & Alternative:
https://www.youtube.com/watch?v=wiYJWyfdGg4

Type I and Type II Errors:
https://www.youtube.com/watch?v=9yQm9F2_yIk

One Tailed and Two Tailed Tests:
https://www.youtube.com/watch?v=XHPIEp-3yC0

_______________________________________
Test Static For Means & Pop Proportions:
https://www.youtube.com/watch?v=Hag0GW9B6EY

Hypothesis Testing Problems:
https://www.youtube.com/watch?v=zJ8e_wAWUzE

P-Value Method - Hypothesis Testing:
https://www.youtube.com/watch?v=8Aw45HN5lnA

Hypothesis Testing - Proportions:
https://www.youtube.com/watch?v=76VruarGn2Q

Difference of 2 Means - H Testing:
https://www.youtube.com/watch?v=UcZwyzwWU7o

Cohen's D - Pooled Standard Deviation:
https://www.youtube.com/watch?v=GDe4M0xEghs

Hypothesis Testing - 2 Proportions:
https://www.youtube.com/watch?v=pCbNUnZ98oE

__________________________________
Matched or Paired Samples t-Test:
https://www.youtube.com/watch?v=JiQR0lHLe74

Chi Square Test:
https://www.youtube.com/watch?v=HKDqlYSLt68

Chi Square Distribution Test:
https://www.youtube.com/watch?v=O6a76Dnn104

Test of Independence - Chi Square Dist:
https://www.youtube.com/watch?v=y5nxiL6civU

Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio

This Algebra video provides a basic introduction into graphing absolute value functions using transformations and data tables. It explains how to find the domain and range of absolute value functions.

Functions and Graphs Practice Test: https://www.youtube.com/watch?v=kvU9sOzT2mk

Transformations of Functions:
https://www.youtube.com/watch?v=Tmdrjs9xufc

____________________________________________
How To Find The Range of a Function:
https://www.youtube.com/watch?v=Si2vmzUWfJE

Domain and Range - More Examples:
https://www.youtube.com/watch?v=KyOQhC8ctxc

Domain and Range From a Graph:
https://www.youtube.com/watch?v=KirGQOwjBVI

____________________________________________
Domain and Range - Radical Functions:
https://www.youtube.com/watch?v=VM3iMj0BwLE

Domain of Logarithmic Functions:
https://www.youtube.com/watch?v=WfgYJy035k0

Domain and Range - Piecewise Functions:
https://www.youtube.com/watch?v=0ZoSxPg6JSQ

Domain and Range - Inverse Functions:
https://www.youtube.com/watch?v=wP4JjdFbCkY

_____________________________________________
SAT Math Test Prep:
https://www.youtube.com/watch?v=fTGuTEQCsZY

ACT Math Test Prep:
https://www.youtube.com/watch?v=SsA7rZ8kczM

Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Math & Science Videos:
https://www.patreon.com/mathsc....iencetutor/collectio

We’ve talked about many important concepts for engineers, but today we’re going to discuss a hugely important one that you might not even realize is an engineering concept: ethics. We’ll talk about what a Code of Ethics is. We’ll explore engineering ethics and the ethical theories of utilitarianism, rights ethics, and duty ethics. We’ll also take a look at a few different real life examples of ethical problems in engineering.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

Check out Origin of Everything: https://www.youtube.com/channe....l/UCiB8h9jD2Mlxx96ZF

***

RESOURCES:
http://www.bbc.co.uk/ethics/in....troduction/intro_1.s
https://www.merriam-webster.com/dictionary/ethic
https://www.nspe.org/resources/ethics/code-ethics
https://www.asce.org/question-....of-ethics-articles/a
https://www.asce.org/question-....of-ethics-articles/j
http://www.asce.org/code-of-ethics/
https://plato.stanford.edu/ent....ries/utilitarianism-
https://onlinemasters.ohio.edu..../blog/ultimate-guide
https://www.raeng.org.uk/polic....y/engineering-ethics
https://interestingengineering.....com/understanding-h

***

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:

Sam Buck, Mark Brouwer, Jennifer French Lee, Brandon Westmoreland, dorsey, Indika Siriwardena, James Hughes, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Kathy & Tim Philip, Jirat, Ian Dundore
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In which John Green teaches you about the life and death of one of history's great explorers, Captain James Cook of the British Navy. He charted large swaths of the Pacific ocean, laid claim to Australia and New Zealand, and died a bizarre death in the Sandwich Islands, which are now called the Hawaiian Islands. Exactly how and why Captain Cook was killed in Hawaii is a long-running historical debate. John presents two interpretations of the event and talks about what the differing interpretations say about history. It turns out how the story is told depends on who is doing the storytelling, and people from different backgrounds can interpret events in very different ways. Also, there is a celebration and a mustache involved in this episode, so you definitely don't want to miss it.

Chapters:
Introduction 00:00
Captain James Cook 0:33
An Open Letter to "The White Man's Burden" 2:44
Captain Cook's Controversial Death 3:40
Interpretations of Captain Cook's Death: Makahiki 4:19
Issues with the Ritual Death Story 5:19
How Cook Actually (Probably) Died 6:34
Why Did Cook's Ritual Death Myth Persist? 8:03
Credits 10:00

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

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The Harlem Renaissance produced many remarkable artists, writers, and thinkers. Today we'll talk about one of the most interesting minds of the time, Zora Neale Hurston. Hurston was an anthropologist by training and spent much of her career studying and documenting the lives of Black people in the southern US. She later went on to write several remarkable novels, including Their Eyes Were Watching God, which we discussed in Crash Course Literature. https://www.youtube.com/watch?v=4kF0U8kIMp4&t=1s

Clint's book, How the Word is Passed is available now! https://bookshop.org/a/3859/9780316492935

VIDEO SOURCES

Susan Reverby, Examining Tuskegee: The Infamous Syphilis Study and Its Legacy (Chapel Hill, N.C.: University of North Carolina Press, 2009).
Susan Reverby ed., Tuskegee’s Truth’s: Rethinking the Tuskegee Syphilis Study (Chapel Hill, N.C.: University of North Carolina Press, 2000).
Harriet A. Washington, Medical Apartheid: The Dark History of Medical Experimentation on Black Americans from Colonial Times to the Present (New York: Penguin Random House, 2008).
“Alice Walker ~ Alice Walker Shines Light on Zora Neale Hurston | American Masters | PBS.” 2014. American Masters. January 30, 2014. https://www.pbs.org/wnet/ameri....canmasters/alice-wal
Burke, Marion C. 2012. “Zora Neale Hurston’s ‘Sweat’ and the Black Female Voice: The Perspective of the African-American Woman.” Inquiries Journal 4 (05). http://www.inquiriesjournal.co....m/articles/646/zora-
Hemenway, Robert E. n.d. “UI Press | Robert E. Hemenway | Zora Neale Hurston: A Literary Biography.” Accessed June 23, 2021. https://www.press.uillinois.ed....u/books/catalog/75wf
“John Simon Guggenheim Foundation | Zora Neale Hurston.” n.d. Accessed June 23, 2021. https://www.gf.org/fellows/all....-fellows/zora-Neale-
“Zora Neale Hurston | Biography, Books, Short Stories, & Facts.” n.d. Encyclopedia Britannica. Accessed June 23, 2021. https://www.britannica.com/bio....graphy/Zora-Neale-Hu
Salamone, Frank A. "His Eyes Were Watching Her: Papa Franz Boas, Zora Neale Hurston, and Anthropology." Anthropos 109, no. 1 (2014): 217-24. Accessed July 4, 2021. http://www.jstor.org/stable/43861696.
https://www.c250.columbia.edu/....c250_celebrates/rema
Propaganda and aesthetics : the literary politics of Afro-American magazines in the twentieth century. Johnson, Abby Arthur. / Amherst : University of Massachusetts Press, 1979

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Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Dave Freeman, Hasan Jamal, DL Singfield, Jeremy Mysliwiec, Shannon McCone, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel A Stevens, Vincent, Michael Wang, Stacey Gillespie, Jaime Willis, Alexis B, Burt Humburg, Aziz Y, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ThatAmericanClare, Rizwan Kassim, Sam Ferguson, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Caleb Weeks
__

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You may think you know all about hypnosis from the movies. Zoolander, The Manchurian Candidate, etc... but there's a whole lot more going on. In this episode of Crash Course Psychology, Hank tells us about some of the many altered states of consciousness, including hypnosis.

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych

--
Chapters:
Introduction: Hypnosis & Altered States of Consciousness 00:00
Facts & Fallacies About Hypnosis 2:00
How does hypnosis work? 3:05
Drug Tolerance & Neuroadaptation 4:49
Psychoactive Drugs 5:51
Depressants 6:28
Stimulants 7:35
Hallucinogens/Psychedelics 9:04
Non-Drug Induced Hallucinations 9:33
Review & Credits 10:32
--

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This geometry video tutorial provides a basic introduction into triangle congruence theorems. It explains how to prove if two triangles are congruent using the SSS, SAS, ASA, and AAS postulate using two column proofs. Here is a list of topics contained in the statements and reasons of the two column proofs: Definition of midpoints, reflexive property, congruent angles, perpendicular lines, right angles, vertical angles, supplements of congruent angles, angle bisectors, triangles in circles, overlapping triangles, addition property of equality, segment addition, definition of congruent segments, and segment trisectors. This video contains plenty of examples and practice problems.

2 Column Proofs of Congruent Segments:
https://www.youtube.com/watch?v=cboityRIf4Q

2 Column Proofs of Angles:
https://www.youtube.com/watch?v=kXcG6oYh3i8

Triangle Congruence - SSS, SAS, ASA:
https://www.youtube.com/watch?v=jWHOF6cFbpw

CPCTC - 2 Column Proofs With Triangles:
https://www.youtube.com/watch?v=eq1frp_ZyP8

Median of a Triangle Formula:
https://www.youtube.com/watch?v=_JdkDR4R8E4

Altitude of a Triangle - Orthocenter:
https://www.youtube.com/watch?v=oJyTKVcE4iM

_____________________________________
Triangles, Medians, & Altitudes - Proofs:
https://www.youtube.com/watch?v=ZJ_gqFidInk

2 Column Proofs - Isosceles Triangles:
https://www.youtube.com/watch?v=6Yx923Ocoh4

Angle Side Theorem - 2 Column Proofs:
https://www.youtube.com/watch?v=mwcH3nhXtPQ

Hypotenuse Leg Theorem - HL Postulate:
https://www.youtube.com/watch?v=DKSTjS0n3mY

Detour Proofs - Double Triangle Congruence:
https://www.youtube.com/watch?v=1HOrB5yvEl0

Missing Diagrams - 2 Column Proofs:
https://www.youtube.com/watch?v=IaqzuGweGZ8

_______________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
https://www.patreon.com/MathSc....ienceTutor/collectio

🌟 Step into the latest toddler learning video of Lucas & Friends as they set off on an adventure brimming with joy, learning, and memorable moments. Learning along with this fun kids song and activities is perfect for children of all ages, including babies to learn through play! 🎉

💖 The heartwarming interactions between Lucas and his daddy, as they share in fun activities and express their love through sweet exchanges, including the first words "dad, dada, daddy" and sign language for daddy! ✨ Lucas turns to his mother, learning the precious first words "mom, mama, mommy" through touching moments, including an 'I Love You Mommy' rhyme. 🎶

Leading the way, Lucas and his friends learn to dance, play a name game, and enjoy a fun babies learn to talk game that teaches kids about 'Sharing is caring'! 🤗 Babies also learn the alphabet from A to Z phonics with this fun educational video starring Lucas & Friends! 🦁

⦿ Fun songs and baby learning activities such as:
00:00 Lucas & Ruby making sweet gestures like saying Hi, Hello, and waving their hands 👋
00:50 Daddy song and sign language for Daddy 🧔
01:46 First words for baby: Mommy 👩
06:24 Baby giving high fives to dad 🖐️
07:26 Sign language for "I Love You, Daddy" ❤️
08:12 Action words for kids and the happy song 😊
10:18 Baby learning to say their name 🗣️
12:12 Sign language for babies "I Love You, Mommy" ❤️
13:45 Rolling hands dance move for toddlers 🤗
16:03 Baby learning how to make friends 🤝
18:46 First words baby with Lucas & Friends: Daddy 👨
19:50 Babies learn to talk and repeat game 🎲
22:53 Animal names and sounds for babies 🐕
25:05 Kids playing hide and seek game 🙈
26:52 ABC phonics song for toddlers 🅰️

📢 Join Lucas and his friends on this educational journey where baby learn to speak their first words, gestures, understand the essence of mommy-daddy interactions, the joy of sharing, and the significance of discipline through fun baby learning videos, dance, and music. 🚀 Explore engaging baby learning videos designed for kids aged 6 months to 1 year and older. Join Lucas & Friends in fun-filled baby learning cartoons that spark curiosity and development! 🔥

⭐ If our video entertains your baby and makes them happy, please hit the LIKE button. SHARE it with others so more children can benefit from the learning experience.👍 SUBSCRIBE to our channel to watch our other nursery rhymes, kids songs, and baby learning videos that foster parent-child interaction and lifelong learning. 🔔 Be sure to hit the bell icon to stay updated on our latest releases.🔥

🌟 More fun educational videos for toddlers by RV AppStudios:
👧 Baby Learning First Words https://youtu.be/XhSvTHsNtVg
🥰 Learn to Talk for Babies https://youtu.be/227XglZPvZw
👶 Baby Learning Videos https://youtu.be/50klx9Q5ls8
🤩 Baby's First Words https://youtu.be/c-aiPRcTpao

Copyright © RV AppStudios

#babylearningvideos #firstwords #babylearning

Germany was unusually slow to realise and develop a tank, considering that in 1916, the British and the French had introduced tanks on the battlefield.

When the British used their new tanks at the battle of Flers-Courcelette, in September 1916, the Germans shocked, finally realised that they needed to design their own tank...

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Get your copy of Simple History: World War I today!

https://www.amazon.com/Simple-....History-World-War-I/

Simple history gives you the facts, simple!

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Credit:

Narrator:

Chris Kane

https://ckvox.com/

Animation:
Daniel Turner

Artwork:
Daniel turner

Music Credit

Ross Bugden- 'Rapture'

‘Creative Commons Attribution 4.0 International License’.

Concorde had a cruising speed of 2,179 kilometers or 1,354 miles per hour, which was Mach 2 - twice the speed of sound.
A New York to London flight would only take 3 hours, therefore making it much faster than a regular commercial flight.

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Credit:
Created by Daniel Turner

Narrator:
Christian H. Miles

Music Credit

Destructoid - MK2

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Percentages can be done mentally both accurately and rapidly using this trick. Percentages made easy with the cool math trick!

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Where did Vladimir Putin come from? What was Putin’s education? Who pushed Putin to pursue a meteoric rise to Prime Minister and President of the largest country in the word? Watch Putin’s history unfold from his modest origins to the dominant figure he is today.

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



Narrator:
Bryan 'Lazlo' Beauregard


Sources:


· Sebestyen, Victor (2018), Lenin the Dictator
· Truscott, Peter (2005). Putin's Progress: A Biography of Russia's Enigmatic President, Vladimir Putin
· Lynch, Allen. Vladimir Putin and Russian Statecraft
· Vladimir Putin; Nataliya Gevorkyan; Natalya Timakova; Andrei Kolesnikov (2000). First Person: An Astonishingly Frank Self-Portrait by Russia's President Vladimir Putin
· Rosefielde, Steven; Hedlund, Stefan (2009). Russia Since 1980
· Dawisha, Karen (2015). Putin's Kleptocracy: Who Owns Russia?

#fastmathtricks
#mentalmath
#mathtrick Dividing fractions quickly is easy with the butterfly math trick! To support free math on Patreon (thank you): https://www.patreon.com/tecmath To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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Wie löse ich in der CAS-App der GeoGebra Rechner-Suite eine Gleichung?
AM beispiel einer quadratischen Gleichung erkläre ich die Bedienung.

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