Longitudinal waves are waves in which the displacement of the medium is in the same direction as, the direction of propagation or movement of the wave. In other words, the displacement of the medium is parallel to the propagation of the wave

Longitudinal waves are also called compressional or compression waves, because they produce compression and rarefaction when traveling.
I also cover compressions and rarefactions.

Components of blood and their functions
Learn about the major components of the blood
Your blood is made of,
red blood cells, white blood cells, plasma, and platelets
Red blood cells carry oxygen
White blood cells fight germs
Plasma carries electrolytes and hormones.
Platelets clot the blood
Resources for Blood
White Blood Cell
https://en.wikipedia.org/wiki/White_blood_cell
Your blood
https://www.youtube.com/watch?v=CRh_dAzXuoU

Parts of blood
https://www.youtube.com/watch?v=R-sKZWqsUpw
*
*
For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

Learn about the nations, peoples, cultural characteristics, physical features, and political and economic structures of the Northern Tropics region in South America!
We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you’d like us to cover any additional topics, please let us know.
For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

#mathreview #mathisfun

Let's gain some practice plotting points on a graph involving whole numbers, zero, and fractions!

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Grade 6 » The Number System » Apply and extend previous understandings of numbers to the system of rational numbers. » 8

Solve real-world and mathematical problems by graphing points in all four quadrants of the coordinate plane. Include use of coordinates and absolute value to find distances between points with the same first coordinate or the same second coordinate.

What is a picture graph?
What is a tally chart?
How can I use a picture graph to make a tally chart?
How can I use a tally chart to make a picture graph?
Practice with tally charts and picture graphs

...

MashUp Math is a great free resource for math students, parents, and teachers. Our lessons are a great resource for struggling students, flipped classroom educators, and homeschool math students.

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In which John Green teaches you about the fall of the Roman Empire, which happened considerably later than you may have been told. While the Western Roman Empire fell to barbarians in 476 CE, the Byzantines in Constantinople continued the Eastern Empire nicely, calling themselves Romans for a further 1000 years. Find out what Justinian and the rest of the Byzantine emperors were up to over there, and how the Roman Empire dragged out its famous Decline well into medieval times. In addition to all this, you'll learn about ancient sports riots and hipster barbarians, too.

Chapters:
Introduction: The Fall of Rome 00:00
Why Did the Roman Empire Fall? Barbarians at the Gates 0:30
Why Did the Roman Empire Fall? Barbarians Inside the Gates 2:07
An Open Letter to Pants 4:10
Constantine and the Eastern Roman (Byzantine) Empire 5:10
Comparing the Eastern & Western Roman Empires 6:57
Emperor Justinian 8:08
The Orthodox and Catholic Churches Split 10:38
Credits 12:06

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

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Step by step directions adding 3/4 + 5/6
How to add three fourths plus five sixths which are two fractions with unlike denominators

Find a common denominator
Rename the. fractions
Add fractions
Simplify

For more Math help visit our website
http://www.moomoomath.com/

#matematikbulmacası
#mathpuzzle
#mathpuzzleforbeginners

A short demonstration on how to use the fraction cards to show dividing

Periods & Groups In The Periodic Table | Properties of Matter | Chemistry | FuseSchool

Learn the basics about Periods and groups in the periodic table. Groups and periods are two ways of categorizing elements on the periodic table. How do you tell them apart and how do they related to periodic table trends? Find out more in this video!

This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org

SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT.

VISIT us at [a]www.fuseschool.org%2C[/a] where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you.

These videos can be used in a flipped classroom model or as a revision aid.

Find all of our Chemistry videos here: https://www.youtube.com/playli....st?list=PLW0gavSzhMl

Find all of our Biology videos here: https://www.youtube.com/playli....st?list=PLW0gavSzhMl

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There's Hydrogen and Helium
Then Lithium, Beryllium
Boron, Carbon everywhere
Nitrogen all through the air

With Oxygen so you can breathe
And Fluorine for your pretty teeth
Neon to light up the signs
Sodium for salty times

Magnesium, Aluminium, Silicon
Phosphorus, then Sulfur, Chlorine and Argon
Potassium, and Calcium so you'll grow strong
Scandium, Titanium, Vanadium and Chromium and Manganese

CHORUS
This is the Periodic Table
Noble gas is stable
Halogens and Alkali react agressively
Each period will see new outer shells
While electrons are added moving to the right

Iron is the 26th
Then Cobalt, Nickel coins you get
Copper, Zinc and Gallium
Germanium and Arsenic

Selenium and Bromine film
While Krypton helps light up your room
Rubidium and Strontium then Yttrium, Zirconium

Niobium, Molybdenum, Technetium
Ruthenium, Rhodium, Palladium
Silver-ware then Cadmium and Indium
Tin-cans, Antimony then Tellurium and Iodine and Xenon and then Caesium and...

Barium is 56 and this is where the table splits
Where Lanthanides have just begun
Lanthanum, Cerium and Praseodymium

Neodymium's next too
Promethium, then 62's
Samarium, Europium, Gadolinium and Terbium
Dysprosium, Holmium, Erbium, Thulium
Ytterbium, Lutetium

Hafnium, Tantalum, Tungsten then we're on to
Rhenium, Osmium and Iridium
Platinum, Gold to make you rich till you grow old
Mercury to tell you when it's really cold

Thallium and Lead then Bismuth for your tummy
Polonium, Astatine would not be yummy
Radon, Francium will last a little time
Radium then Actinides at 89

REPEAT CHORUS

Actinium, Thorium, Protactinium
Uranium, Neptunium, Plutonium
Americium, Curium, Berkelium
Californium, Einsteinium, Fermium
Mendelevium, Nobelium, Lawrencium
Rutherfordium, Dubnium, Seaborgium
Bohrium, Hassium then Meitnerium
Darmstadtium, Roentgenium, Copernicium

Nihonium, Flerovium
Moscovium, Livermorium
Tennessine, Oganesson
And then we're done!!

credits
from AsapSCIENCE Music, released May 17, 2013
license
all rights reserved

View full lesson: http://ed.ted.com/lessons/a-br....ief-history-of-numer

1, 2, 3, 4, 5, 6, 7, 8, 9... and 0. With just these ten symbols, we can write any rational number imaginable. But why these particular symbols? Why ten of them? And why do we arrange them the way we do? Alessandra King gives a brief history of numerical systems.

Lesson by Alessandra King, animation by Zedem Media.

Please join us for a Hangout on Air with Education Industry Director Jennifer Howard where we'll discuss Google's latest Education Search Analysis (ESA) Q2 2014 trends for marketers.

To RSVP:
Google+ users: click 'Yes' in the 'Are you going to watch' box
Non-Google+ users: RSVP here - http://goo.gl/72xrK4

ESA offers marketers a unique perspective on the higher education landscape based on search data only Google can provide. It looks at query volume and auction dynamics over time using robust, custom education query lists, providing insight into marketplace conditions and user behavior.

The Common Core State Standards (CCSS) call for increasing levels of text complexity across grade levels, to ensure that students become proficient with college and career texts by their high school graduation. In the first of a two-part series, Dr. Elfrieda (Freddy) Hiebert will discuss why vocabulary is a primary means of increasing English Language Learners' capacity with complex text, in addition to discussing how instruction in particular types of vocabulary (e.g., picturable & compound words) can lay a foundation for reading many complex texts. In Dr. Hiebert's second session, she will provide lessons and guidance for teaching the vocabulary of individual texts.

Note: Participants are asked to read Text Complexity and English Learners: Building Vocabulary before the webinars.

To download the presentation slides: http://www.textproject.org/lib....rary/presentations/t

#basicsentencesforgrade1
#readingenglishgrade1
#readingenglishkinder
#readingenglishsentences
#practicereadingenglish
#englishfortoddlers
#englishforkids
#practicereadingenglishforbeginners
#readingsimplesentences
#sentencesstartingwithIhave
#grade1English
#KinderEnglish
#Grade2English
#practicereadingenglishsentences
#basicenglishsentences
#Icansentencese
#readinglessonforkids
#simplesentences

I can read.
I can write.
I can jump.
I can hop.
I can swim.
I can read.
I can write.
I can swim.
I can skate.
I can smile.
I can walk.
I can run.
I can crawl.
I can smile.
I can laugh.
I can play.
I can pray.

#Iamsentencese
#readinglessonforkids
#simplesentences

I am happy.
I am sad.
I am hungry.
I am thirsty.
I am scared.
I am excited.
I am surprised.
I am amazed
I am tired.
I am bored.
I am confused.

#Iwillsentencese
#simplesentences

I will sing a song.
I will go to school.
I will write my name.
I will eat my food.
I will buy a toy.
I will play my drum.
I will run very fast.
I will read this book.
I will wash my hands.
I will take a bath.
I will comb my hair.

#Ilikesentences.

I like to eat bread.
I like to eat cake.
I like to play with my doll.
I like to play with my pet cat.
I like to drink milk.
I like to drink juice.
I like to go to the beach.
I like to go to the park.
I like to read books.
I like to swim in the pool.
I like to swim in the river.
I like to watch movies.
I like to watch cartoons.
I like to bake a cake.
I like to bake cookies.

Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/precalculus/precalc-matrices/matrix-equations/e/writing-systems-of-equations-as-matrix-equations?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus

Watch the next lesson: https://www.khanacademy.org/math/precalculus/precalc-matrices/reduced_row_echelon/v/matrices-reduced-row-echelon-form-1?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus

Missed the previous lesson?
https://www.khanacademy.org/math/precalculus/precalc-matrices/matrix-equations/v/matrix-equations-systems?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

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/hu....manities/world-histo

Created by Sal Khan.

Watch the next lesson: https://www.khanacademy.org/humanities/world-history/euro-hist/wo/v/beginning-of-world-war-ii?utm_source=YT&utm_medium=Desc&utm_campaign=worldhistory

Missed the previous lesson? https://www.khanacademy.org/humanities/world-history/euro-hist/mussolini-fascism/v/mussolini-aligns-with-hitler?utm_source=YT&utm_medium=Desc&utm_campaign=worldhistory

World history on Khan Academy: From the earliest civilizations to the modern world, geography, religion, trade, and politics have bound peoples and nations together — and torn them apart. Take a journey through time and space and discover the fascinating history behind the complex world we inhabit today.

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 World History channel: https://www.youtube.com/channe....l/UC6KRvvmvkCchFMo2E
Subscribe to Khan Academy: https://www.youtube.com/subscr....iption_center?add_us

Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/precalculus/seq_induction/seq_and_series/e/arithmetic_sequences_1?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus

Watch the next lesson: https://www.khanacademy.org/math/precalculus/seq_induction/seq_and_series/v/finding-the-100th-term-in-a-sequence?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus

Missed the previous lesson?
https://www.khanacademy.org/math/precalculus/seq_induction/seq_and_series/v/explicit-and-recursive-definitions-of-sequences?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

Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/trigonometry/trig-function-graphs/trig_graphs_tutorial/e/graphs-of-trigonometric-functions?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry

Watch the next lesson: https://www.khanacademy.org/math/trigonometry/trig-function-graphs/trig_graphs_tutorial/v/plotting-trig-features?utm_source=YT&utm_medium=Desc&utm_campaign=Trigonometry

Missed the previous lesson?
https://www.khanacademy.org/math/trigonometry/trig-function-graphs/trig_graphs_tutorial/v/matching-a-trigonometric-function-to-its-graph?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

Made in collaboration with Epic History TV, check out the other episode in this double bill, Francis Drake here: https://youtu.be/WiwEwSdKh0c
Ferdinand Magellan - first circumnavigation of the Earth completed by Juan Sebastián Elcano.


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Credit:
Created by Daniel Turner

Narrator:

Charles Nove

Music Credit

‘LIFE IS’, ‘EIDOLON’, ‘STARS IN HER SKIES’ by Scott Buckley – www.scottbuckley.com.au

‘Attribution 4.0 International’

Banner of Charles I of Spain: Proof02 via Wikimedia CC BY-SA 3.0