Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/trigonometry/less-basic-trigonometry/angle-addition-formulas-trig/e/trig_addition_identities?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry

Watch the next lesson: https://www.khanacademy.org/math/trigonometry/less-basic-trigonometry/angle-addition-formulas-trig/v/cosine-addition-identity-example?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry

Missed the previous lesson?
https://www.khanacademy.org/math/trigonometry/less-basic-trigonometry/angle-addition-formulas-trig/v/cosine-angle-addition-2?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry

Trigonometry on Khan Academy: Big, fancy word, right? Don't be fooled. Looking at the prefix, tri-, you could probably assume that trigonometry ("trig" as it's sometimes called) has something to do with triangles. You would be right! Trig is the study of the properties of triangles. Why is it important? It's used in measuring precise distances, particularly in industries like satellite systems and sciences like astronomy. It's not only space, however. Trig is present in architecture and music, too. Now you may wonder...how is knowing the measurement and properties of triangles relevant to music?? THAT is a great question. Maybe you'll learn the answer from us in these tutorials!

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 Trigonometry channel:
https://www.youtube.com/channe....l/UCYQSs1lFJZKpyqNQQ
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us

How many toys are on Peck's shelf? The last number you say is the number of toys! Learn how to count to ten with Peck the Bird from Khan Academy Kids.

See the full Counting 1-10 playlist, here: http://khan.co/KhanKids-Counting.

Visit us at http://www.khankids.org to learn more about Khan Academy Kids, a free educational app for preschool through 2nd grade.

Available on Google Play, Apple, and Amazon app stores:
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➡️ http://khan.co/KhanKids-YT-Apple
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Subscribe to our channel for more videos like this.

By Ruslana Westerlund Ed.D. (2 September 2021) A brief description of the WIDA 2020 Standards by focusing on the main components of the framework with a closer look at the Language Expectations.

TEAC731 Responsive Pedagogy for ELs
Education
Graduate School
Education K-12 (M.A.)
Graduate School
M.A. Education K-12
Ruslana Westerlund

https://www.bethel.edu/admissions/

Stephen Hawking thought an asteroid impact posed the greatest threat to life on Earth. Thanks to Kiwico for sponsoring this video. For 50% off your first month of any crate, go to https://kiwico.com/veritasium50
For other potential world ending catastrophes, check out Domain of Science: https://ve42.co/DoS

Special thanks to:
Prof. Dave Jewitt from UCLA Earth, Planetary, and Space Sciences
Prof. Mark Boslough from Sandia National Labs
Scott Manley: https://www.youtube.com/user/szyzyg
Ryan Wyatt at Morrison Planetarium
Prof. Amy Mainzer
Alexandr Ivanov for the opening shot of Chelyabinsk Meteor

Maps of Asteroid Impacts —https://ve42.co/Map

Time passing animation from Universe Sandbox - http://universesandbox.com/

Opposition Effect — https://ve42.co/Belskaya2000
Belskaya, I. N., & Shevchenko, V. G. (2000). Opposition effect of asteroids. Icarus, 147(1), 94-105.

Potentially Hazardous Asteroids — https://ve42.co/Perna2013
Perna, D., Barucci, M. A., & Fulchignoni, M. (2013). The near-Earth objects and their potential threat to our planet. The Astronomy and Astrophysics Review, 21(1), 65.

Survey of Potentially Hazardous Asteroids — https://ve42.co/NEOSurvey

Population Vulnerability — https://ve42.co/Rumpf2017
Rumpf, C. M., Lewis, H. G., & Atkinson, P. M. (2017). Population vulnerability models for asteroid impact risk assessment. Meteoritics & Planetary Science, 52(6), 1082-1102.

Size distribution of NEOs — https://ve42.co/Trilling17
Trilling, D. E., Valdes, F., Allen, L., James, D., Fuentes, C., Herrera, D., ... & Rajagopal, J. (2017). The size distribution of near-earth objects larger than 10 m. The Astronomical Journal, 154(4), 170.

2020 NEOWISE Data Release — https://ve42.co/NEOWISE

National Research Council Report— https://ve42.co/Defending
Board, S. S., & National Research Council. (2010). Defending planet earth: Near-Earth-Object surveys and hazard mitigation strategies. National Academies Press.

Tug Boat — https://ve42.co/Schweickart03
Schweickart, R. L., Lu, E. T., Hut, P., & Chapman, C. R. (2003). The asteroid tugboat. Scientific American, 289(5), 54-61.

Gravity Tractor 1 — https://ve42.co/Lu05
Lu, E. T., & Love, S. G. (2005). Gravitational tractor for towing asteroids. Nature, 438(7065), 177-178.

Laser Ablation — https://ve42.co/Thiry14
Thiry, N., & Vasile, M. (2014). Recent advances in laser ablation modelling for asteroid deflection methods. SPIE Optical Engineering+ Applications, 922608-922608.

Yarakovsky Effect — https://ve42.co/Yara

DART Mission — https://ve42.co/DART

Nuclear 1 — https://ve42.co/Ahrens92
Ahrens, T. J., & Harris, A. W. (1992). Deflection and fragmentation of near-Earth asteroids. Nature, 360(6403), 429-433.

Nuclear 2 — https://ve42.co/Bradley10
Bradley, P. A., Plesko, C. S., Clement, R. R., Conlon, L. M., Weaver, R. P., Guzik, J. A., ... & Huebner, W. F. (2010, January). Challenges of deflecting an asteroid or comet nucleus with a nuclear burst. In AIP Conference Proceedings (Vol. 1208, No. 1, pp. 430-437). American Institute of Physics.

Researched and Written by Petr Lebedev, Jonny Hyman and Derek Muller
3D animations, VFX, SFX, Audio Mixing by Jonny Hyman
2D animation by Ivy Tello
Intro animation by Nicolas Pratt
With Filming by Raquel Nuno

Music from https://epidemicsound.com "Stellar Dance" "Orbit" "That Notebook" "What We Discovered" "Out of Poppies" "Handwriting"
Images and video supplied by Getty Images

TeacherTube User: Ldulane3

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 is a video for Kindergarten students that addresses the standard MKM1 for common properties of objects.

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

Watch our Champ Siblings perform amazing calculations within seconds
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For an indefinite integral, the constant of integration is usually represented with +C. It represents the constant that can not be determined while completing an indefinite integral without extra information.

If we have a solution to the function we get when we take the integral, we can find the appropriate value of C for the given problem.

0:00 Intro
0:15 Demonstration of where +C comes from
2:23 Process for finding C value

#+C
#ConstantOfIntegration
#Calculus
#Integral
#Antiderivative
#JoeCMath

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More great Super Simple videos in the Super Simple App for iOS ► http://apple.co/2nW5hPd

We love counting! Counting down. Counting up. Counting to 5. Counting to 20. Counting potatoes. Counting bananas. Counting teddy bears. Counting monkeys. This is a collection of ten of our favorite counting songs. Let's get started with some counting!

Listen to Super Simple Songs on Spotify: https://spoti.fi/2ofnaZg
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Or, just ask your smart speaker to play Super Simple Songs!
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Here are the songs in this collection:
Count And Move
Counting Bananas
One Potato, Two Potatoes
Five Little Monkeys
Ten In The Bed
Seven Steps
10 Little Elves
Five Creepy Spiders
One For You, One For Me
Count Down And Move

All original and adapted songs, and all arrangements, copyright Super Simple Learning.

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Get FREE resources like coloring sheets, games, flashcards, and worksheets for most of these songs in the Super Simple Learning Resource Center:
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Super Simple Songs® and Super Simple Learning® are registered trademarks of Super Simple Learning, Inc.

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

Using the recursive formula of a sequence to find its fifth term. Created by Sal Khan.

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/ap-calculus-bc/bc-series/bc-inf-sequences/e/convergence-and-divergence-of-sequences?utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusBC

Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-bc/bc-series/bc-inf-sequences/v/identifying-sequence-convergence-divergence?utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusBC

Missed the previous lesson? https://www.khanacademy.org/math/ap-calculus-bc/bc-series/bc-inf-sequences/v/term-of-recursive-sequence?utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusBC

AP Calculus BC on Khan Academy: Learn AP Calculus BC - everything from AP Calculus AB plus a few extra goodies, such as Taylor series, to prepare you for the AP Test

About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to Khan Academy's AP Calculus BC channel: https://www.youtube.com/channe....l/UC5A2DBjjUVNz8axD-
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us

This physics video tutorial discusses the simple harmonic motion of a pendulum. It provides the equations that you need to calculate the period, frequency, and length of a pendulum on Earth, the Moon, or another planet. This video contains plenty of examples and practice problems.

Full 1 Hour 17 Minute Video - Patreon:
https://www.patreon.com/MathScienceTutor

Direct Link to The Full Video:
https://bit.ly/3GEctFc

More Physics Videos + Worksheets:
https://www.video-tutor.net/ph....ysics-basic-introduc

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Join The Membership Program:
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Full 1 Hour 17 Minute Video:
https://www.youtube.com/watch?v=flIOH6OP7G4

Physics 1 Final Exam Review:
https://www.youtube.com/watch?v=CwkhvFlNFp0

In this video we discuss the difference between simple and compound sentences. Simple sentences must have just two parts; a Subject and a predicate or verb. Compound sentences are made up of two complete simple sentences or independent clauses. Don't worry, once you've watched this video you'll be able to identify the difference and feel comfortable with both types of sentences.

If your looking for more resources about Simple and compound sentences be sure to download our free 12 page lesson plan (built for grades 1-3) here: https://learnbright.org/lesson....s/language-arts/simp

Thank you for watching and learning with us! We’re constantly releasing new content and videos so click that “Subscribe” button and you’ll 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, sign up for a free account, and instantly you'll 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 Language Arts lesson plans: https://learnbright.org/lessons/?filter_subject=language-arts

#SimpleSentence #CompoundSentence

In this video, you will learn fractions of one part of a whole and two more parts of a whole.
@TeacherBethClassTV
Let's LEARN, PLAY, and GROW . . . TOGETHER!
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#fraction #fractions #half #onehalf #sets #number #kindergarten #kids #math #mathematics #maths #kindergartenclasses #kindergartenlearningvideos #education #educational #melcs #counting #countnumbers #mathlessons

This algebra video tutorial explains how to simplify algebraic expressions by adding and subtracting polynomials. It shows you how to distribute constants to polynomial expressions and how to add and subtract / combine like terms to simplify the polynomial expression. It also contains examples multiplying and dividing polynomial expressions. it explains how to multiply two binomials, a binomial with a trinomial and two trinomials together. In addition, this video contains a few practice problems of dividing polynomials by factoring & canceling, using long division and synthetic division.

Introduction to Polynomials:
https://www.youtube.com/watch?v=Rxx4HepHI_E

Polynomials - Basic Operations:
https://www.youtube.com/watch?v=ZvL9aDGNHqA

Dividing Polynomials By Monomials:
https://www.youtube.com/watch?v=KyHXWAp7UGo

How To Graph Polynomial Functions:
https://www.youtube.com/watch?v=a5x4lwnvHM0

Intermediate Value Theorem:
https://www.youtube.com/watch?v=9wEHwFrUyOU

_____________________________________
Long Division - Polynomials:
https://www.youtube.com/watch?v=_FSXJmESFmQ

Polynomial Long Division - More Examples:
https://www.youtube.com/watch?v=8lT00iLntFc

Synthetic Division of Polynomials:
https://www.youtube.com/watch?v=FxHWoUOq2iQ

Remainder Theorem & Synthetic Division:
https://www.youtube.com/watch?v=p1lSRAeEMR0

Factor Theorem & Synthetic Division:
https://www.youtube.com/watch?v=zAGP46nR6-0

Rational Zero Theorem:
https://www.youtube.com/watch?v=Iaq7z7reznM

______________________________________
Real & Imaginary Solutions - Polynomials:
https://www.youtube.com/watch?v=tRrPfxR5h-w

Solving Polynomial Equations - Synthetic D:
https://www.youtube.com/watch?v=ZaXaBcZxhq4

Solving Polynomial Equations With Excel:
https://www.youtube.com/watch?v=lomAl6XB_SM

Writing Polynomial Functions Given Zeros:
https://www.youtube.com/watch?v=vu0JmblDgog

Descartes Rule of Signs:
https://www.youtube.com/watch?v=YaU5JTe3cPU

Solving Polynomial Inequalities:
https://www.youtube.com/watch?v=Fd5ys4PQ-aM

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

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

This physics video tutorial focuses on topics related to magnetism such as magnetic fields & force. It explains how to use the right hand rule to determine the direction of the magnetic force on a moving charge particle and how to use ampere's law to derive the formula of a solenoid. This video contains plenty of examples and practice problems.

Magnetic Force on a Current Carrying Wire:
https://www.youtube.com/watch?v=nv28Cp-ILJ0

Magnetic Force on a Moving Charge:
https://www.youtube.com/watch?v=7MBawzone30

The Homopolar Motor:
https://www.youtube.com/watch?v=6Oj4qvCR6ow

The Lorentz Force:
https://www.youtube.com/watch?v=6ThH8IpsqAA

Magnetic Field of a Current Carrying Wire:
https://www.youtube.com/watch?v=wZlHLHnZSRg

___________________________________
Magnetic Sensors - The Reed Switch:
https://www.youtube.com/watch?v=pw9_xmbFi6E

Magnetic Force Between Two Parallel Wires:
https://www.youtube.com/watch?v=8T_dP7Oq620

Ampere's Law - Magnetic Field of a Solenoid:
https://www.youtube.com/watch?v=lLQQjwuqdeg

Magnetic Field of a Toroidal Solenoid:
https://www.youtube.com/watch?v=XWtscd-IoDU

Magnetic Field of a Moving Charge:
https://www.youtube.com/watch?v=CXChim2gOzs

____________________________________
Torque on a Loop - Magnetic Dipole Moment:
https://www.youtube.com/watch?v=-l-aajUS_Ik

The Hall Effect:
https://www.youtube.com/watch?v=pnbRXo1q-nE

Magnetic Flux:
https://www.youtube.com/watch?v=y30ATrKpwpU

Faraday's Law of Electromagnetic Induction:
https://www.youtube.com/watch?v=LDOa7UdfcMQ

Lenz's Law - Induced Current:
https://www.youtube.com/watch?v=HhFZfWLl-P0

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

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



Here is a list of topics:
1. Magnetism - Bar Magnets, North & South Pole
2. Forces of Attraction and Repulsion
3. Magnetic Field Due to a Straight Current-Carrying Wire
4. Magnetic Field Right Hand Rule
5. Magnetic Force on a Current Carrying Wire
6. Magnetic Force on a Moving Charge
7. Magnetic Force Between Two Parallel Conductors
8. Magnetic Force on a Wire
9. Magnetic Field of a Solenoid
10. Ampere's Law - Solenoid & Magnetic Field of a Straight Wire
11. Torque on a Current Loop in a Uniform Magnetic Field
12. Magnetic Force on a Proton and Electron
13. Electron's Path in a Uniform Magnetic Field
14. Radius of Curvature & Kinetic Energy
15. Energy of Electron in eV or Electron Volts
16. Converting Joules to eV
17. Unit of Magnetic Field - Tesla
18. Centripetal Force & Magnetic Fields
19. Permeability of Free Space Constant
20. Magnetic Dipole Moment

How do ecosystems change over time?
Ecological succession, also called Biological succession occurs when one ecological community changes into another.
There are two main types of ecological succession.
Primary and Secondary Succession.
Primary Succession occurs when there is no soil and the new community has to start without any soil.
Secondary succession occurs when an event destroys an area but the soil remains.
The pioneer species are the first plants to appear in the new ecosystem.
*
*
For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an