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Teacherflix
26 Views · 11 months ago

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate

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Follow me to Gross Science: https://youtu.be/kRUt9pqMCSg and BrainCraft: https://youtu.be/Joalg73L_gw
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BOOK RECOMMENDATION: Barbara J. King "How Animals Grieve" http://amzn.to/1MD7Jz5

References:
Barbara J. King “When Animals Mourn” Scientific American http://www.nature.com/scientif....icamerican/journal/v



Jason G. Goldman “Death Rituals In The Animal Kingdom” http://www.bbc.com/future/stor....y/20120919-respect-t

Iain Douglas Hamilton “Behavioural reactions of elephants towards a dying and deceased matriarch” Applied Animal Behavior Science http://www.appliedanimalbehavi....our.com/article/S016

Chimpanzees mourning dead infants:
http://www.mpg.de/1071360/mourning_chimpanzee
http://www.cell.com/current-bi....ology/abstract/S0960
(video: https://www.youtube.com/watch?v=nM9GLhuPDXA)


Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below!
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-----------------
It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
Follow me on Twitter: @jtotheizzoe
Email me: itsokaytobesmart AT gmail DOT com
Facebook: http://www.facebook.com/itsokaytobesmart
For more awesome science, check out: http://www.itsokaytobesmart.com
Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios

Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen Inc.
Kate Eads - Producer
Andrew Matthews - Editing/Motion Graphics/Animation
Katie Graham - Camera
John Knudsen - Gaffer

Theme music: “Ouroboros” by Kevin MacLeod

Other music via APM
Stock images from Shutterstock, stock footage from Videoblocks (unless otherwise noted)

Teacherflix
23 Views · 11 months ago

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate
I’m thankful for science. And also pie. SUBSCRIBE! http://bit.ly/iotbs_sub
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Want to wear your love for science? We’ve got merch: http://dftba.com/besmart

References/Learn More:

How turkeys got so big: https://www.wired.com/2008/11/turkeytech/

Benjamin Franklin’s 1784 letter to Sarah Bache about turkeys: http://franklinpapers.org/franklin/framedVolumes.jsp?vol=41&page=281

Ames, Mercedes, and David M. Spooner. "DNA from herbarium specimens settles a controversy about origins of the European potato." American Journal of Botany 95.2 (2008): 252-257.

Doebley, John. "The genetics of maize evolution." Annu. Rev. Genet. 38 (2004): 37-59.

Grun, Paul. "The evolution of cultivated potatoes." Economic Botany 44.3 (1990): 39-55.

McWilliams, James. The Pecan: A history of America's native nut. University of Texas Press, 2013.

Nee, Michael. "The domestication of cucurbita (Cucurbitaceae)." Economic Botany 44.3 (1990): 56-68.

Polashock, James, et al. "The American cranberry: first insights into the whole genome of a species adapted to bog habitat." BMC plant biology 14.1 (2014): 1

Speller, Camilla F., et al. "Ancient mitochondrial DNA analysis reveals complexity of indigenous North American turkey domestication." Proceedings of the National Academy of Sciences 107.7 (2010): 2807-2812.

----------------
It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below!
Facebook: http://www.facebook.com/itsokaytobesmart
Twitter: @okaytobesmart @DrJoeHanson
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Produced by PBS Digital Studios
Music via APM
Stock images from SciencePhoto http://www.sciencephoto.com/ and Shutterstock http://www.shutterstock.com

Teacherflix
22 Views · 3 years ago

Video to help young learners discovers the letter "D". They’ll have fun learning how it sounds, how to write it, and words that start with it.

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Teacherflix
25 Views · 2 years ago

This chemistry video tutorial provides an introduction to moles. It explains the concept of moles and how it relates to mass in grams by the molar mass of a compound. it also explains how moles relate to atoms and molecules through avogadro's number.

Introduction to Moles: https://www.youtube.com/watch?v=EowJsC7phzw

How To Calculate The Molar Mass:
https://www.youtube.com/watch?v=c_zHROisdP4

How To Convert Grams to Moles:
https://www.youtube.com/watch?v=irYPta9G_sw

How To Convert Moles to Grams:
https://www.youtube.com/watch?v=Bj3fr5pEn7U

Moles to Atoms Conversion:
https://www.youtube.com/watch?v=mpHQZ1PrkUI

Grams to Molecules Conversion:
https://www.youtube.com/watch?v=Ch16s4kYH1Q

_________________________________
Grams to Atoms:
https://www.youtube.com/watch?v=RFCtPjZ4Vzk

Moles, Atoms, & Grams Conversions:
https://www.youtube.com/watch?v=i1EPgeu_fJ8

How To Balance Chemical Equations:
https://www.youtube.com/watch?v=iUARzSxcKzk

Stoichiometry - Basic Introduction:
https://www.youtube.com/watch?v=7Cfq0ilw7ps

Avogadro's Number:
https://www.youtube.com/watch?v=74-X94OP2XI

_________________________________
Limiting Reactant Problems:
https://www.youtube.com/watch?v=IWtkhAv4RTo

Excess Reactant Problems:
https://www.youtube.com/watch?v=-7UloVZFG00

Theoretical & Percent Yield:
https://www.youtube.com/watch?v=hhEfqa_x7RQ

Percent Yield - More Examples:
https://www.youtube.com/watch?v=w1njGAkc8og

Percent Error:
https://www.youtube.com/watch?v=JbEo46uV6d4

_________________________________
Percent Composition By Mass:
https://www.youtube.com/watch?v=bGmbyztdCHE

Empirical Formula Problems:
https://www.youtube.com/watch?v=JeSSucG-CVw

Empirical Formula - Hydrated Compounds:
https://www.youtube.com/watch?v=gl_QAO5y9Ig

Combustion Analysis:
https://www.youtube.com/watch?v=uvR7zNJ1KoI

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

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

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

Teacherflix
20 Views · 2 years ago

This video tutorial focuses on subatomic particles found in the nucleus of atom such as alpha particles, beta particles, gamma rays, protons, electrons, positrons, and neutrons. It contains plenty of examples and practice problems.

Chemistry PDF Worksheets: https://www.video-tutor.net/ch....emistry-basic-introd

Here is a list of topics:
1. Nuclear Chemistry - Types of Radioactive Decay & Radiation
2. Beta Particle Production / Emission or Beta Decay
3. Conversion of Neutrons Into Protons and Electrons
4. How To Find and Identify The Missing Element
5. Position Production Reaction
6. Gamma Particle Production From The Annihilation of a Positron and an Electron
7. Electron Capture and Nuclear Transformation
8. Alpha Particle Production & Gamma Rays

How To Balance Nuclear Equations: https://www.youtube.com/watch?v=8hnhhBQBQy4
Alpha, Beta, & Gamma Decay: https://www.youtube.com/watch?v=zF5pn8FVlPI
Half Life Chemistry Problems: https://www.youtube.com/watch?v=WTQvfvoOF3g
Carbon-14 Dating Problems: https://www.youtube.com/watch?v=6aDswTVFGfs
Nuclear Binding Energy & Mass Defect: https://www.youtube.com/watch?v=eLwraf_A80U
Nuclear Chemistry & Radioactive Decay: https://www.youtube.com/watch?v=F3NSfTXTl7E
General Chemistry 2 Final Exam Review: https://www.youtube.com/watch?v=lSmJN1_uVpI
______________________________________________________________________________________________
Chemistry - Basic Introduction: https://www.youtube.com/watch?v=-KfG8kH-r3Y
Stoichiometry Practice Problems: https://www.youtube.com/watch?v=mP2Yg8alyR0
Lewis Structures - Mega Review: https://www.youtube.com/watch?v=PeY_sihSh8E
Molarity, Molality, Density, & Mass %: https://www.youtube.com/watch?v=O_nyEj_hZzg
Vapor Pressure & Clausius Equation: https://www.youtube.com/watch?v=xSHDawWK30s
Colligative Properties: https://www.youtube.com/watch?v=c8dDLe37ONg
General Chemistry 1 Final Exam Review: https://www.youtube.com/watch?v=5yw1YH7YA7c
_______________________________________________________________________________________________
Chemical Kinetics - Initial Rate Method: https://www.youtube.com/watch?v=oh4L2gcI5ds
Integrated Rate Laws - 1st & 2nd Order: https://www.youtube.com/watch?v=7I0Xg92_eA4
Chemical Equilibrium & Ice Tables: https://www.youtube.com/watch?v=J4WJCYpTYj8
Acids and Bases - Introduction: https://www.youtube.com/watch?v=FM2MpMbV0rw
Acids and Bases - Practice Test: https://www.youtube.com/watch?v=hmGPK0cuO7o
Ksp - Molar Solubility & Ice Tables: https://www.youtube.com/watch?v=kO-9OajoPZs
Gibbs Free Energy, Entropy & Enthalpy: https://www.youtube.com/watch?v=2KuNzB0cZL4
Entropy - 2nd Law of Thermodynamics: https://www.youtube.com/watch?v=lN66F9V7-_Q
Intro to Galvanic & Voltaic Cells: https://www.youtube.com/watch?v=9blB-uMTIAM
Cell Potential Problems: https://www.youtube.com/watch?v=UzkLP8segcs
Cell Potential & Gibbs Free Energy: https://www.youtube.com/watch?v=LqAfREfwt1Y
Cell Potential & Equilibrium K: https://www.youtube.com/watch?v=n4JCEFJKWA0
Nernst Equation: https://www.youtube.com/watch?v=jousNNceCXs
Electrolysis of Water: https://www.youtube.com/watch?v=zMLNHm4nUCQ
Intro to Electroplating: https://www.youtube.com/watch?v=XnliDNb5ZN4
Electrolysis & Electroplating Problems: https://www.youtube.com/watch?v=DnvKfiLa_HQ
Electrochemistry Practice Problems: https://www.youtube.com/watch?v=S9frctwDyL0
SAT Chemistry Subject Test Review: https://www.youtube.com/watch?v=ygpTfaSFqH8
______________________________________________________________________________________________
Coordinate Covalent Bond: https://www.youtube.com/watch?v=faEYK46zCh4
Complex Ions & Ligands: https://www.youtube.com/watch?v=r4H5XjJPn58
Naming Coordination Compounds: https://www.youtube.com/watch?v=yeNtqjE0dJw
Beer Lambert's Law: https://www.youtube.com/watch?v=rllHziqWlgU
Crystal Field Theory: https://www.youtube.com/watch?v=V1WSesBeURw
_______________________________________________________________________________________________
ACT Math Practice Test: https://www.youtube.com/watch?v=SsA7rZ8kczM

Teacherflix
24 Views · 3 years ago

How does Stranger Things fit in with physics and, more specifically, circuit analysis? I'm glad you asked! In this episode of Crash Course Physics, Shini walks us through the differences between series and parallel circuits and how that makes Christmas lights work the way they work.

--

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Teacherflix
24 Views · 3 years ago

In today's episode, Phil looks at how gravity plays out across the universe.

This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse

Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/product....s/crashcourse-astron

--
Chapters:
Introduction 00:00
Understanding Mass 1:11
What is Gravity? 2:17
Different Types of Orbit 3:41
Escape Velocity 5:30
Why Are Astronauts Weightless? 7:03
Gravity Warps Space 8:17
Review 8:43
--

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PHOTO/VIDEO CREDITS
First photo by Roscosmos / NTSOMZ/ SRC "Planeta" / zelenyikot.livejournal.com
http://www.slate.com/blogs/bad...._astronomy/2013/09/2
http://commons.wikimedia.org/w....iki/File:Portrait_of
http://en.wikipedia.org/wiki/I....saac_Newton#mediavie
http://en.wikipedia.org/wiki/J....ohannes_Kepler#media
http://en.wikipedia.org/wiki/K....aren_L._Nyberg#media
https://www.youtube.com/watch?v=doN4t5NKW-k

Teacherflix
29 Views · 3 years ago

Today, we’re going to take a closer look at borders and the stories they tell. When we look at a map, the shapes we’re seeing can seem so permanent, but a map is just a snapshot of the Earth at a particular time, and by looking a countries shape (and how it has changed across time) we can learn so much about how power moves and the ebb and flow of conflict. We’ll talk about the different types of borders, and power dynamics at play in Armenia and Azerbaijan and even look to the oceans as we explore conflict in the South China Sea.

SOURCES

General

CIA Factbook: https://www.cia.gov/library/pu....blications/resources
Getis, Bjelland, and Getis. Introduction to Geography, 15 ed. McGraw-Hill Education. 2017. ISBN: 978-1-259-57000-1
Gregory, Derek, Ron Johnston, Geraldine Pratt, Michael Watts, and Sarah Whatmore, eds. 2009. The Dictionary of Human Geography. 5th ed. Willey-Blackwell. ISBN: 978-1-4051-3288-6
For a free and open source option for Intro to Human Geography, see:
https://humangeography.pressbooks.com/
For a free and open source option for World Regional Geography, see:
https://worldgeography.pressbo....oks.com/front-matter
Cracking the AP Human Geography Exam: 2020 edition. The Princeton Review.
https://www.cia.gov/the-world-....factbook/field/dispu

South China Sea

https://www.nytimes.com/2016/0....7/15/world/asia/sout
https://www.cfr.org/global-con....flict-tracker/confli
https://en.wikipedia.org/wiki/South_China_Sea

Armenian/Azerbaijan Conflicts

https://www.youtube.com/watch?v=YU2v38hRRbg
https://www.cia.gov/the-world-....factbook/countries/a
https://www.cia.gov/the-world-....factbook/countries/a
https://pulitzercenter.org/sto....ries/how-azerbaijan-
https://www.mei.edu/publicatio....ns/diplomacy-attriti
https://www.bbc.com/travel/art....icle/20200721-nakhch
https://en.wikipedia.org/wiki/....Nakhchivan_Autonomou
https://www.youtube.com/watch?v=YU2v38hRRbg

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#CrashCourse #Geography #Borders

Teacherflix
22 Views · 2 years ago

This physics provides a basic introduction into stress and strain. It covers the differences between tensile stress, compressive stress and shear stress. It provides the equations and formulas to calculate the different forms of stress and strain as well as the shear modulus of an object.

Static Equilibrium:
https://www.youtube.com/watch?v=qGvFAl5CK_c

Elasticity and Hooke's Law:
https://www.youtube.com/watch?v=HALbtyDUjp0

Elastic Modulus:
https://www.youtube.com/watch?v=qQZRTBRJbl4

Bulk Modulus:
https://www.youtube.com/watch?v=ugxgSIGIHrg

___________________________
Volume Unit Conversion:
https://www.youtube.com/watch?v=ylehgnMC1gw

Specific Gravity & Density of Mixtures:
https://www.youtube.com/watch?v=ZcJGFZt-NO4

Will It Sink or Float?
https://www.youtube.com/watch?v=4fwZM6cqyzk

Intro to Pressure & Fluids:
https://www.youtube.com/watch?v=kkq8ruV8_Jw

Atmospheric Pressure Problems:
https://www.youtube.com/watch?v=tYd_CYpNpeY

____________________________
The Gallon Crusher:
https://www.youtube.com/watch?v=abXVQZlFPJg

Absolute Pressure Vs Gauge Pressure:
https://www.youtube.com/watch?v=XCiBaFp8L_M

Water Pressure Vs Gauge Pressure:
https://www.youtube.com/watch?v=12K_aP1KPFk

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

Physics PDF Worksheets:
https://www.video-tutor.net/ph....ysics-basic-introduc

Teacherflix
24 Views · 2 years ago

This calculus video tutorial provides a basic introduction into the definition of the derivative formula in the form of a difference quotient with limits. It explains how to find the derivative of a function using the limit process. This video contains plenty of examples and 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

Teacherflix
18 Views · 11 months ago

Primi passi per conoscere i principali strumenti di Geogebra ed incominciare a lavorare

Teacherflix
23 Views · 3 years ago

Percentage made easy! These five tricks for percentage calculation include working out percentage mentally, percentage increase and decrease and other percentage tricks and shortcuts.

To donate to the tecmath channel:https://paypal.me/tecmath

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Teacherflix
20 Views · 2 years ago

Simple History FANS, SOLDIERS & WARRIORS! Support our channel by downloading Rise of Kingdoms with our link for FREE:https://www.rok.games/?kol=SimpleHistory

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Teacherflix
20 Views · 10 months ago

En este nuevo video para aprender español aprenderemos un montón de vocabulario sobre comidas.
La comida es importante en el día a día y aprender vocabulario sobre comidas te ayudará a tener una conversación en español.

Además con los diálogos entre los personajes puedes mejorar la conversación.

Hacemos nuestros videos para que puedan ser usados por principiantes, intermedios y avanzados, en nuestros canal encontrarás muchísimos más videos organizados en listas de reproduccción según tu nivel y lo que quieras aprender.

Aprender español online nunca había sido tan fácil y divertido.

También puedes escuchar y repetir para aprender pronunciación.

Aprende el nombre de los alimentos en español

¿A ti que te gusta comer? Cuéntanos en los comentarios.

¡¡Y no olvides suscribirte!! 🔔

Teacherflix
40 Views · 2 years ago

Former teacher and Khan Academy Kids team member Miss Aimee shares her tips for developing a schedule for learning and playing at home.

Get our daily learning schedules here:
http://khan.co/KhanKids-DailySchedules

Check out our printable activities for hands-on fun!
http://khan.co/KhanKids-Printables

Learn more about Khan Academy Kids, our free educational app for children ages 2-7 at www.khankids.org.

Available on Apple, Google Play, and Amazon app stores:
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And subscribe to our channel for more videos like this.

Teacherflix
24 Views · 10 months ago

Agosto es el mes de las vacaciones de verano en España. Aunque hay gente que prefiere tomarse sus vacaciones en julio o en otro momento, agosto es el mes en el que más españoles se van de vacaciones.

En este nuevo video veraniego aprenderemos un montón de vocabulario sobre las vacaciones.

Algunas expresiones típicas del verano en español que aprenderemos en este video:

Me tumbaré en la playa.
Voy a ir a un parque de atracciones.
Voy a subirme a una montaña rusa.
Alquilaré una moto.
Haré una ruta en moto por todo el país.
Montaré en canoa.
Iré de pesca.
Iré de acampada.
Voy a ir a un concierto.
Me sentaré a contar historias junto al fuego.
Iré a surfear.
Conoceré gente nueva.
Comeré en un restaurante.
Visitaré un castillo.

Como puedes ver, todos los verbos que utiliza nuestro protagonista en el vídeo están en tiempo futuro ya que sus vacaciones están comenzando y las acciones las realizará en el futuro.

En la segunda parte del vídeo tenemos algunas recomendaciones para disfrutar de un verano con mucho sol, como suele ser en España. Una oportunidad para aprender un montón de vocabulario de verano:


Con este calor es muy importante mantenerse bien hidratado.
Procuro beber agua con frecuencia.
También se recomienda no salir a la calle en las horas de más calor.
Por eso a medio día me quedaré descansando en el hotel.
Es muy importante echarse protector solar.
El sol del verano es muy fuerte y es muy malo para la salud quemarse la piel.


¿Y tú, qué vas a hacer en las vacaciones? ¿qué sueles llevar en la maleta?

Escríbelo en los comentarios.

/ Clase 159
Activa las notificaciones para enterarte de cada nuevo vídeo🔔

Teacherflix
29 Views · 3 years ago

This tutorial uses basic math and logic to demonstrate that a negative times a negative equals a positive.

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Teacherflix
24 Views · 10 months ago

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*Click CC to turn on subtitles in English to follow along*

See video with pop-up grammar explanations:
https://www.youtube.com/watch?v=C9t9IrOERgo

This is a video in a new series to help people learn Spanish through repetition and storytelling.

This particular story is basic. We will be using the words from this episode in future episodes. The idea is to repeat words a lot in different ways and to get you forgetting that you're watching something in Spanish.

Teacherflix
27 Views · 3 years ago

TeacherTube User: Mlittleucf

TeacherTube URL: http://www.teachertube.com/vie....wVideo.php?video_id=

This is a math video lesson to help you with new math, math tricks, and or simple math questions you may have.

This video by Jodi OMeara discussed differentiating instruction in mathematics using multiple representations ConcreteRepresentationAbstractCRA

Teacherflix
25 Views · 10 months ago

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
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SUBSCRIBE for more Spanish videos: http://bit.ly/XGe7we
and make sure to click the notification bell!

Follow me on Facebook: https://www.facebook.com/srjordanspanish

Tweet me: https://twitter.com/senorjordan

Check out my website: http://www.senorjordan.com

Follow me on Instagram: @senorjordanvideos

Listen to my music on Soundcloud:
https://soundcloud.com/senorjordanspanish

Listen to my music on Spotify:
https://open.spotify.com/artis....t/2nyJ9GgLNMckXCuBHU

Buy my songs on iTunes:
https://music.apple.com/us/artist/1621526948

Buy my songs on Amazon:
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Donate to my video-making project:
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¡Hola! In this video lesson we'll be talking about verbs that have a little change in the middle. We call these stem-changing verbs. This is a video on the third type of three.

Please "Like" this video if it was helpful.

Click the link below for word bank as well as charts:
http://www.senorjordan.com/2012/07/01-present-tense-stem-changing-verbs-e-i/

Thanks for watching!

*this is a re-do of a previous video because I had to correct a mistake




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