The easy way how to multiply numbers under twenty - faster than a calculator!
Become a math genius the smart way - using vedic math - not the way you've been taught!

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

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

Fractions made easy - adding three fractions fast

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

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

Working out percentage discounts is easy, just use one or two of the tricks suggested in this math lesson.
To work out the discount subtract from one hundred percent, then use a mental break up technique to calculate the percentage discount. 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
To support tecmath on Patreon: https://www.patreon.com/tecmath
To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

How to work out the area of a rectangle in square feet and square inches.


To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

This cool math trick for multiplication is amazing - you will be solving math with no problem! Multiply numbers instantly without hesitation and amaze everyone with your genius! Become the lord of mathematics!

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

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

This math problem can be solved using logic - not just blind guessing!

To contribute on Patreon:
https://www.patreon.com/tecmath

For the playlist of math problems:
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
To support tecmath on Patreon: https://www.patreon.com/tecmath
To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

#mathproblems
#mathriddles
#mathsforfun

To learn the times tables use your hands as well as your head! Multiplication had never been so easy using this easy trick - including some of the six, seven, eight, nine and ten times table.

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

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

Converting fractions to percentages is easy. This video shows how to do it without any tricks - just the no nonsense easy approach. Remember any video requests - send them in!

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

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

Multiplying Fractions is simple. .

This video is part of a playlist:
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

To support tecmath making new math videos on Patreon:
https://www.patreon.com/tecmath To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
To support tecmath on Patreon: https://www.patreon.com/tecmath
To buy tecmath mechandise: https://teespring.com/stores/tecmath-store


#fractions
#fraction
#fractionsmath

The Pythagorean theorem is an easy to use relation in geometry among the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides.

To support tecmath on Patreon: https://www.patreon.com/tecmath

BTW for those interested - Pythagorean history is fascinating!
Pythagoreanism originated in the 6th century BC, based on the teachings and beliefs held by Pythagoras and his followers, the Pythagoreans. Pythagoras established the first Pythagorean community in Italy. These guys were into the divinity of numbers and were a fully blown religion!
Of all the stories of the Pythogeans - one on my favourite is the one Hippasus - a devoted follower.
Legend has it that he was the first person to prove the existence of an irrational number—he showed that the square root of two was an irrational, never-ending number. This was more than just a major discovery—it was open rebellion! Pythagoras had taught that all numbers could be expressed as ratios of integers, and Hippasus had proven his divine teacher wrong.According to the legend, Hippasus showed his proof to Pythagoras while they were on a boat. In response, Pythagoras grabbed Hippasus, wrestled him to the side of the boat, and held his head underwater until he stopped moving. Then Pythagoras threw the lifeless body overboard, turned to the others aboard, and warned them never to tell a soul what had happened.That story is probably not true. It seems to be a twisted version of a Pythagorean fable that said Hippasus was drowned by the gods as punishment for disclosing the secret of irrational numbers to the world.But that story still reveals something creepy about the Pythagorean cult. They spread this story, it’s believed, as a parable—a warning telling their followers that if they shared the cult’s secrets with the world, they could expect a watery grave. 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
To support tecmath on Patreon: https://www.patreon.com/tecmath
To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

How do you graph parabolas?
Easily?
Simply?
Quickly?

That's how you graph parabolas.


See more great math tricks here: https://www.youtube.com/user/tecmath

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

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

How to divide decimals: first divide as if there is no decimal. Next, count the number of digits after the decimal in each number. Through a bit of subtraction you can work out where the decimal goes.
#decimals #decimaldivision #howtodividedecimals


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

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

How Many Faces, Edges And Vertices Does A Hexagonal Prism Have?
Here we’ll look at how to work out the faces, edges and vertices of a hexagonal prism.
We’ll start by counting the faces, these are the flat surfaces that make the shape. A hexagonal prism has 8 faces altogether - 2 hexagons and 6 rectangles.
Next we’ll work out how many edges the hexagonal prism has, which are where two faces meet. A hexagonal prism has 18 edges.
Next we’ll count the corners of the shape (the corners). A count will show there are 12 vertices.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

This math trick allows you to work out the square root of any number - NOT JUST PERFECT SQUARES - instantly. With decimals. With ease. Can you work faster than a calculator? With this tecmath trick you just might! The math shortcut magic is back!

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

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

This video was sponsored by Skillshare.
The first 1000 people to use the link will get a free trial of Skillshare Premium Membership.
https://skl.sh/tecmath10201

The game of nim is an easy to learn math strategy game, that can be played anywhere with matchsticks, rocks, twigs....
But best of all, whilst it looks fair, there is a math strategy you can employ to win everytime!

Game of Nim link: https://www.archimedes-lab.org..../game_nim/play_nim_g

To donate to the tecmath channel:https://paypal.me/tecmathlocale.x=en_AU

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

#skillshare
#sponsoredvideo
#mathgame

Dad and the Dinosaur
by Gennifer Choldenko
Illustrated by Dan Santat
Read by Let's Read Stories

A heartwarming father-son story about bravery and facing fears.

Nicholas was afraid of the dark outside his door, the bushes where the giant bugs live, and the underside of manhole covers.

His dad was not afraid of anything.

Nicholas wants to be as brave as his dad, but he needs help. That’s why he needs a dinosaur. After all, dinosaurs like the dark, bugs are nothing to them, and they eat manhole covers for lunch (and everything under them for dinner).

With his toy dinosaur, Nicholas can scale tall walls, swim in deep water, even score a goal against the huge goalie everyone calls Gorilla. But when the dinosaur goes missing, everything is scary again.

Luckily, his dad knows that even the bravest people can get scared, and it’s okay to ask for help facing your fears. It’s just guy stuff.

A family classic in the making from the dream team of Newbery Honor-winner Gennifer Choldenko and Caldecott Medal-winner Dan Santat.

★ "[Choldenko's] knowing, understated storytelling and Santat’s warm, expressive spreads give full credence to the fears that weigh on kids, as well as the presences—both real and imagined—that can help alleviate them."—Publishers Weekly (starred review)
Click here to purchase Dad and the Dinosaur: https://www.amazon.com/Dad-Din....osaur-Gennifer-Chold

We interrupt your normally scheduled Crash Course content to bring a new and exciting project we're calling 'Recess'! These short, fully animated episodes are going to pop up a few times a year and will shed light on amazing stories from past or current Crash Course subjects that for one reason or another didn't make it into the shows. We're hoping they inspire you to get back into a series you may have drifted away from, or spark an interest in a subject you didn't even know you found cool! So kick back, relax, and enjoy some Recess time.

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:

Mark Brouwer, Nickie Miskell Jr., Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Daniel Baulig, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, Justin Zingsheim, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
--

Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Tumblr - http://thecrashcourse.tumblr.com
Support Crash Course on Patreon: http://patreon.com/crashcourse

CC Kids: http://www.youtube.com/crashcoursekids

In 1789, the French Monarchy's habit of supporting democratic popular revolutions in North America backfired. Today, we're talking about the French Revolution. Across the world, people were rising up to throw off monarchies, and Louis didn't see the writing on the wall until it was too late. Today we'll talk about how the French Revolution unfolded, and what (if anything) was really accomplished. You'll learn about stuff like the National Assembly, the Tennis Court Oath, the Declaration of the Rights of Man and the Citizen, the guillotine, Robespierre, and a bunch of other kind of unbelievable details.

Hatian Revolutions - CC World History: https://youtu.be/5A_o-nU5s2U

Sources
Hunt, Lynn et al. Making of the West: Peoples and Cultures. 6th ed. Boston: Bedford St. Martin’s, 2019.


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:

Eric Prestemon, Sam Buck, Mark Brouwer, Indika Siriwardena, Avi Yashchin, Timothy J Kwist, Brian Thomas Gossett, Haixiang N/A Liu, Jonathan Zbikowski, Siobhan Sabino, Zach Van Stanley, Jennifer Killen, Nathan Catchings, Brandon Westmoreland, dorsey, Kenneth F Penttinen, Trevin Beattie, Erika & Alexa Saur, Justin Zingsheim, Jessica Wode, Tom Trval, Jason Saslow, Nathan Taylor, Khaled El Shalakany, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, David Noe, Shawn Arnold, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
--

Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Tumblr - http://thecrashcourse.tumblr.com
Support Crash Course on Patreon: http://patreon.com/crashcourse

CC Kids: http://www.youtube.com/crashcoursekids

#crashcourse #history #europeanhistory

In eastern Europe, in the 17th century a couple of "great powers" were coming into their own. The vast empire of Russia was modernizing under Peter the Great, and the relatively tiny state of Prussia was evolving as well. Russia (and Tsar Peter) reformed many aspects of Russian governance, realigning them toward the way things were done in western Europe. In Prussia, efficiency of institutions became a thing, and Prussia turned into "a large army with a small state attached."

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:

Eric Prestemon, Sam Buck, Mark Brouwer, Timothy J Kwist, Brian Thomas Gossett, Haxiang N/A Liu, Jonathan Zbikowski, Siobhan Sabino, Zach Van Stanley, Bob Doye, Jennifer Killen, Nathan Catchings, Brandon Westmoreland, dorsey, Indika Siriwardena, Kenneth F Penttinen, Trevin Beattie, Erika & Alexa Saur, Justin Zingsheim, Jessica Wode, Tom Trval, Jason Saslow, Nathan Taylor, Khaled El Shalakany, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, David Noe, Shawn Arnold, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
--

Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Tumblr - http://thecrashcourse.tumblr.com
Support Crash Course on Patreon: http://patreon.com/crashcourse

CC Kids: http://www.youtube.com/crashcoursekids

Sources
Hosking, Geoffrey. Russia: People and Empire. Cambridge: Harvard University Press, 1997.

Hunt, Lynn et al. Challenge of the West: Peoples and Cultures from 1320 to the Global
Age. Lexington: D. C. Heath, 1995.
Kivelson, Valerie A. and Ronald Grigor Suny. Russia’s Empires. New York: Oxford
University Press, 2016.
Stites, Richard. Serfdom, Society, and the Arts in Imperial Russia The Pleasure and the Power. New Haven: Yale University Press, 2008.

IMAGES and FOOTAGE:
Wikimedia Commons
iStock/fotoVoyager
Storyblocks/guillaumelynn

In which John Green teaches you about some of the colonies that were not in Virginia or Massachusetts. Old New York was once New Amsterdam. Why they changed it, I can say; ENGLISH people just liked it better that way, and when the English took New Amsterdam in 1643, that's just what they did. Before the English got there though, the colony was full of Dutch people who treated women pretty fairly and allowed free Black people to hold jobs. John also discusses Penn's Woods, also known as Pennsylvania. Pennsylvania was (briefly) a haven of religious freedom, and William Penn dealt relatively fairly with the natives his colony displaced. Of course, as soon as Penn died, the colonist started abusing the natives immediately. We venture as far south as the Carolina colonies, where the slave labor economy was taking shape. John also takes on the idea of the classless society in America, and the beginning of the idea of the American dream. It turns out that in spite of the lofty dream that everyone had an equal shot in the new world, there were elites in the colonies. And these elites tended to be in charge. And then their kids tended to take over when they died. So yeah, not quite an egalitarian paradise. In addition to all this, we get into the Salem Witch Trials, the treatment of women in the colonies, and colonial economics. Oh yeah, one more thing, before you comment about how he says we're talking about the American Revolution next week, but the end screen says Seven Years War, consider that perhaps the Seven Years War laid the groundwork for the revolution to happen.

Chapters:
Introduction 00:00
New Amsterdam Becomes New York 0:55
Pennsylvania and the Quakers 2:05
South Carolina 3:37
Mystery Document 4:08
Bacon's Rebellion 5:14
The Dominion of New England and The Tolerance Act 6:17
The Salem Witch Trials 7:31
Colonial American Economics 8:05
Colonial American Society 9:11
Women's Roles in Colonial America 9:51
Credits 11:05

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

Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/

CC Kids: http://www.youtube.com/crashcoursekids