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Drawing a tree is done by establishing a basic organic shape for the leaves, drawing in a trunk split into a couple of branches and outlining the whole thing in marker before adding smaller details. Draw an organic tree shape, keeping it simple to avoid overworking it. English captions. (02:42)
Found by grazianione in Draw Foliage and Trees
August 12, 2009 at 02:02 PM
Ages: 10 - 18
License: Proprietary
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Hank takes us on a trip through time to revisit the 5 major mass extinction events that have impacted species over the Earth's history, and leaves us with some thoughts about what could possibly be the sixth event - the one caused by human activities. (10:26)
Found by teresahopson in Natural Disasters
July 25, 2012 at 03:41 PM
Ages: 15 - 18
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Painting details in flowers and leaves in watercolor paintings defines the shapes more precisely. Work in some more color for the darker shades of the petals. Clean the brush and sweep the edges for a nice effect. English captions. (01:55)
Found by teresahopson in Roses
August 12, 2009 at 06:57 AM
Ages: 11 - 18
License: Undetermined
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What Makes a Leaf Green? Leaves are green because of the pigment called chlorophyll, which takes sunlight, absorbs red and blue lights, and reflects green light. Learn about the etymology of the word "chlorophyll". (01:28)
Found by teresahopson in Plant Structure
January 23, 2011 at 07:49 PM
Ages: 10 - 18
License: Proprietary
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This short video gives excellent real life footage of a large Pitcher Plant. Students will enjoy the close up views of this amazing carnivorous plant in its natural environment. Nepenthes rajah is the most impressive, and possibly the best known of the pitcher plants. Some of the leaves become modified as they grow, developing enormous flasks known as 'pitchers'. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (2:35)
Found by porter1526 in Pitcher Plants
March 28, 2012 at 11:31 AM
Ages: 6 - 14
License: Proprietary
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This short video gives excellent real life, close up footage of the Common Dandelion. Dandelions are well-known, robust weeds; the common name derives from the French 'dent de lion', meaning 'lion's tooth', which refers to the deeply toothed, deep green leaves, which are arranged in rosettes. The bright yellow flower heads are borne on hollow stalks, and the downy seed heads are familiar to children as dandelion clocks, which are used to 'tell the time' by the number of blows taken to remove the seeds. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (Less Than 2 Minutes)
Found by porter1526 in Dandelion
February 12, 2012 at 08:39 PM
Ages: 6 - 14
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This short video gives excellent real life footage of a Pitcher Plant and Tree Shrew. Nepenthes rajah is the most impressive, and possibly the best known of the pitcher plants. Some of the leaves become modified as they grow, developing enormous flasks known as 'pitchers'. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (0:39)
Found by porter1526 in Pitcher Plants
March 28, 2012 at 12:22 PM
Ages: 6 - 14
License: Proprietary
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This short video gives excellent real life, close up footage of a Coco-de-mer Palm plant. The awesome coco-de-mer is a giant of the plant world; this palm has the longest leaves and the largest and heaviest seeds of any plant in the world. The tall slender trunk may tower up to 34 metres in height, bearing at its crown a mass of palm fronds. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (0:26)
Found by porter1526 in Coco-de-mer
February 16, 2012 at 10:21 PM
Ages: 6 - 14
License: Proprietary
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This lesson shows students that whatever they do on the Internet leaves traces that they might not be aware. Students analyze social networking profiles, citing textual evidence for a debate about the pros and cons of having a digital footprint. The lesson comes in the form of a game. (5:59)
Found by freealan in Cybersafety and Cyberethics
June 28, 2012 at 06:42 PM
Ages: 5 - 18
License: Undetermined
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In the last video, we learned the quantity theory of money and its corresponding identity equation: M x V = P x Y
For a quick refresher:- M is the money supply.
- V is the velocity of money.
- P is the price level.
- And Y is the real GDP.
In this video, we’re rewriting the equation slightly to divide both sides by Y and explore the causes behind inflation. What we discover is that a change in P has three possible causes – changes in M, V, or Y.
You probably know that prices can change a lot, even over a short period of time.
Y, or real GDP, tends to change rather slowly. Even a seemingly small jump or fall in Y, such as 10% in a year, would signal astonishing economic growth or a great depression. Y probably isn’t our usual culprit for inflation.
V, or the velocity of money, also tends to be rather stable for an economy. The average dollar in the United States has a velocity of about 7. That may fall or rise slightly, but not enough to influence prices.
That leaves us with M. Changes in the money supply are the driving factor behind inflation. Put simply, when more money chases the same amount of goods and services, prices must rise.
Can we put this theory to the test? Let’s look at some real-world examples and see if the quantity theory of money holds up.
In Peru in 1990, hyperinflation came into full swing. If we track the growth rate of the money supply to the growth rate of prices, we can see that they align almost perfectly on a graph with both clocking in around 6,000% that year.
If we plot the growth rates of the money supply along with the growth rates of prices for a many countries over a long stretch of time, we can see the same relationship.
We’ll wrap-up the causes of inflation with three principles to keep in mind as we continue exploring this topic:
- Money is neutral in the long run: a doubling of the money supply will eventually mean a doubling of the price level.
- “Inflation is always and everywhere a monetary phenomena.” – Milton Friedman-
Central banks have significant control over a nation’s money supply and inflation rate. (06:46)
Found by MRUniversity in Inflation
December 14, 2017 at 02:01 PM
Ages: 14 - 18
License: Educational Community License
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A gunshot wound to the head leaves a white rhino calf clinging to life, but a caring wildlife veterinarian steps in to help, and a special bond is formed. (03:38)
Found by teresahopson in Rhinoceros
May 31, 2014 at 07:51 PM
Ages: 10 - 18
License: Proprietary
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Bands of America Grand National adjudicators give commentary to Broken Arrow H.S. Band during performance of "Destiny Leaves You No Choice." Broken Arrow High School from Broken Arrow, OK were the Grand National Champions this year. (08:00)
Found by begamatt in Marching Band
September 9, 2012 at 11:36 AM
Ages: 8 - 18
License: Undetermined
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This short video gives excellent real life footage of House Sparrows collecting leaves, grasses, and sticks to build their nest. The house sparrow (Passer domesticus) is one of the most well-known and best-loved birds. Both sexes have a brown back streaked with black. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (0:36)
Found by porter1526 in Sparrow
March 28, 2012 at 08:22 PM
Ages: 6 - 14
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This short video gives excellent real life footage of 2 badgers at their den. Students will enjoy this close up view of the 2 badgers gathering leaves and sticks to place in their dens. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (00:33)
Found by porter1526 in Badgers
December 27, 2011 at 10:48 PM
Ages: 6 - 14
License: Proprietary
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Using Uniformly Accelerated Motion (UAM) as a framework to learn about Uniformly Angularly Accelerated Motion (UαM). Just like UAM, UαM has 5 variables, 4 equations and if you know 3 of the UαM variables, you can determine the other 2 UαM variables, which leaves you with 1 …
Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:15 Introducing Uniformly Angularly Accelerated Motion! (UαM)
0:38 Reviewing Uniformly Accelerated Motion
1:22 When can we use the UαM Equations?
2:24 The four UαM Equations
4:20 Examples of objects in UαM
4:48 Average and instantaneous angular velocity and the UαM equations. Thank you to Scott Carter, and Christopher Becke for being my team for this video. (06:34)
Found by Flipping Physics in Rotational Motion
July 11, 2017 at 05:54 PM
Ages: 12 - 18
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Following the assassination of John F. Kennedy on November 22, 1963, Vice President Lyndon B. Johnson is sworn in as president of the United States aboard Air Force One before the plane leaves Dallas for Washington, D.C. (00:34)
Found by CourtneyMorrison in Johnson Audio
July 8, 2012 at 04:07 PM
Ages: 13 - 18
License: Proprietary
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Watch this book trailer video for A Is for Autumn, a photography picture book for children by Robert Maass. From Apple to Zipper, Robert Maass's picture book takes you through the sights, tastes, and sounds of autumn. Perfect for preschoolers, this alphabet book features the special and often magical moments of the season—complete with apples, leaves, frost and more. And this alphabet video will introduce you to some of the wonderful images from the book.
(1:35)
Found by Mrs Jefferies in Elementary Level
October 2, 2011 at 11:22 PM
Ages: 3 - 8
License: Public Domain
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The giant panda bear leaves its scent in the forest and does handstands in this scenting ritual narrated by David Attenborough for the BBC. (03:48)
Found by teresahopson in Panda Bears
April 27, 2010 at 09:56 PM
Ages: 10 - 18
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Poet and journalist Walt Whitman was born May 31, 1819 in West Hills, New York. Considered one of America's most influential poet Whitman aimed to transcend traditional epics, eschew normal aesthetic form, and reflect the nature of the American experience and its democracy. In 1855 he self-published the collection Leaves of Grass, now a landmark in American literature. In this video clip, learn more about the life of Walt Whitman. (3:12)
Found by CourtneyMorrison in Whitman, Walt
October 27, 2012 at 12:34 PM
Ages: 13 - 18
License: Proprietary
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Enjoy some very close-up slow motion footage of these amazing orange, black and silver butterflies, as they visit the flowers of Lantana bushes. This footage was filmed inside the Los Angeles Zoo, on ornamental plants along one of the pathways. The adult butterflies love to feed on the nectar-rich flowers of Lantana, while the caterpillars eat the leaves of Passion Vine. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (3:51)
Found by porter1526 in Fritillary Butterfly
July 14, 2012 at 08:02 PM
Ages: 6 - 18
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(04:25)
In previous videos, you learned two things.
First, that there can be large disparities in economic wealth among different countries. And second, you learned that one key factor drives that disparity: growth rate. As we said, it changes everything. But just how transformative is a country's growth rate?
Take Argentina, for example.
In 1950, the Argentine standard of living was similar to that of many Western European countries. Up until 1965, Argentina's per capita income was ahead of many of its neighbors.
On the other hand, Japan in 1950 was on the other end of the spectrum. Japan had been ravaged by war and was only just beginning to find its economic footing again. At that time, Japan's standard of living was roughly the same as that of Mexico.
It was quite poor, compared to the Argentina of the same era.
But look at what's happened in the past 65 years.
Japan today is one of the world's most prosperous countries. Since 1950, it has managed to double its living standards about every eight years. Argentina, on the other hand, has stagnated. Once, Argentina had double the standard of living of Japan. But Japan now doubles them today, with a standard of living 10 times higher than the one it had in 1950.
In economic terms, Japan is what we would call a growth miracle. It's in the same class as other growth success stories, like South Korea and China which have experienced the “hockey stick” of prosperity. (India seems like it may have started on this path as well.)
These countries are proof of one thing: with the right factors, a poor country can not only grow, but it can do so quickly. It can catch up with developed countries at an astonishing rate.
What took the United States two centuries of steady growth can now be achieved by other countries in about one-fifth the time. Catch-up can happen in 40 years—about the span of a generation or two.
That's the good news.
The bad news is, while growth can skyrocket in some countries, growth isn’t guaranteed at all.
Argentina is an example of this. It grew well for a time, and then it stalled. Even worse than Argentina, are countries like Niger, and Chad, which are the very worst of growth disasters. Not only are these countries in extreme poverty, but they also have little to no growth. More than that, these countries have never experienced substantial growth in the past.
But why does that all matter?
It matters because growth isn't just about numbers. It's not just about more goods and services. When a country grows, its citizens often end up with longer, healthier, and happier lives. Conversely, the countries that are growth disasters have citizens in poverty, with shorter and less happier lives.
As bleak as this seems, it’s the plain truth: while growth miracles are possible, growth disasters are, too.
Which leaves us with another question: what causes either state?
What leads to growth, prosperity, health, and happiness? And then, what leads to the opposite situation?
We're excited to share the answer, but that's a topic for future videos.
For now, check out this video to get up to speed on growth miracles and growth disasters.
Found by MRUniversity in Economic Growth
December 14, 2017 at 10:01 AM
Ages: 14 - 18
License: Educational Community License
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Inflation can throw a kink in your savings plans. To accurately know your rate of return, you need to do a little more than calculate what you’ll receive off of the nominal interest rate.
First off, returns on savings are taxed. Depending on where you live in the world, you’ll need to take out some portion of your returns to pay taxes. For our example, we’ll use 33%.
If your nominal interest rate is 6% and you save $100, your return is $6 at the end of the year. Now we need to take out that third for taxes, which leaves you with $4.
So far, so good. But we still haven’t arrived at the real interest rate after taxes, which is the nominal interest rate minus inflation. If inflation has been at a fairly low 3%, that means that the real interest rate before taxes in this scenario is 3%.
To account for inflation, that’s another $3 out of your original $6 return.
We’re down to a $1 return off of your $100 investment, bringing your nominal interest rate of 6% to a real interest rate of 1%. Yikes! But it’s still a net positive.
What if the nominal interest rate is 12% and inflation is at a moderate 9%? You would actually lose money with real interest rate of -1%. Your $100 would be, at the end of the year, equivalent to $99 in real terms.
As inflation gets higher, you can expect your real interest rate to dip further into the negatives. It makes less sense to save money under high inflation. The rational action under this scenario is to go ahead and spend money as quickly as you get it. Sadly, this makes the problem even worse as an increased velocity of money also increases inflation. (05:19)
Found by MRUniversity in Inflation
December 18, 2017 at 11:41 AM
Ages: 14 - 18
License: Educational Community License
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In 1975, Sarah Jane Moore aims a gun at President Gerald Ford as he leaves the Saint Francis Hotel in California. This assassination came just 17 days after a previous attempt on his life. In this video clip, learn more about the second assassination attempt on President Gerald Ford’s life. (03:57)
Found by CourtneyMorrison in Assassination Attempt
May 20, 2012 at 11:26 AM
Ages: 13 - 18
License: Proprietary
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Joint Impressionist oil painter Mike Rooney in this free art lesson as he explains how to make the most out of edges in your painting! In this video, Mike demonstrates with a quick landscape sketch using Lukas Oils where he would have soft edges and where he leaves them separated. This lesson is full of tips and techniques for artists of all skill levels. (06:35)
Found by teresahopson in Specific Techniques
June 11, 2017 at 04:12 PM
Ages: 10 - 18
License: Proprietary
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One year after the United States doubled its territory with the Louisiana Purchase, the Lewis and Clark expedition leaves St. Louis, Missouri, on a mission to explore the Northwest from the Mississippi River to the Pacific Ocean. Also on this day 1955, the Warsaw Pact was created by the Soviets. (01:00)
Found by CourtneyMorrison in May 11-20
September 14, 2012 at 12:05 AM
Ages: 12 - 18
License: Proprietary
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Views: 1437 |
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