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New videos from Khan Academy 2020-08-03T12:39:04.000000
Mis à jour : il y a 2 heures 10 min

Responsibilities of citizenship

lun, 2020-08-03 12:39
Responsibilities of citizenship

Citizenship in early America, 1840s-1870s

lun, 2020-08-03 12:39
Citizenship in early America, 1840s-1870s

Political rights

lun, 2020-08-03 12:39
Political rights

Personal rights

lun, 2020-08-03 12:39
Personal rights

Civic life, private life, politics, and government

lun, 2020-08-03 12:39
Civic life, private life, politics, and government

What is citizenship?

lun, 2020-08-03 12:39
What is citizenship?

Economic rights of citizenship

lun, 2020-08-03 12:39
Economic rights

Civil society

lun, 2020-08-03 12:38
Civil society

Obligations of citizenship

lun, 2020-08-03 12:38
Obligations of citizenship

Citizenship in early America, 1789-1830s

lun, 2020-08-03 12:38
Citizenship in early America: 1789-1830s

WATCH: Green Revolution

jeu, 2020-07-30 23:12
In this video, scholar Eman M. Elshaikh introduces the Green Revolution, which refers to agricultural technology transfers aimed at reducing world hunger, mainly in the 1950s and 1960s. The set of policies and aid initiatives also had a political element within the context of the Cold War. Aid from the US was linked to the belief that extreme poverty and hunger might turn populations to communist political movements. Debate continues over the benefits and costs of the programs, based on disagreements about sustainability, US corporate benefits, and whether the Green Revolution actually made things measurably better in the long run. Website: https://whp.oerproject.com Facebook: https://www.facebook.com/OERProject/ Twitter: https://twitter.com/OERProject

WATCH: Water and Classical Civilizations

jeu, 2020-07-30 23:12
In which John Green teaches you about water! So, we talk about resources a lot on Crash Course, and today is no exception. It turns out people can't live without water, which means it's absolutely necessary for civilization. Today John talks about water in the context of classical civilizations, but not like Greece or Rome or something. We're talking about the Maya civilization in Central America, and the Khmer civilization in what is now Cambodia. So this is an awesome video, OK? You can directly support Crash Course at https://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content. Citation 1: Steven J. Mithen - Sue Mithen, Thirst: Water and Power in the Ancient World. Harvard University Press. 2012. p 235 Citation 2: Patrice Bonnafoux, cited in Mithen. p243 Citation 3: Mithen. p 296

Graph labels and scales

jeu, 2020-07-30 05:44
When graphing a real-world relationship, we need to pick labels and axis scales that are appropriate for the purpose of our model.

Interpreting expressions with multiple variables: Cylinder

jeu, 2020-07-30 05:44
Given the vale and the expression for the radius of a cylinder, find the radius of a cylinder with the same volume and 100 times the height. This involves analyzing the expression for the radius to see how changing the height affects the radius.

Interpreting trigonometric graphs in context

jeu, 2020-07-30 05:44
When a trigonometric function models a real-world relationship, we can assign meaning to its midline, amplitude and period.

Interpreting expressions with multiple variables: Resistors

jeu, 2020-07-30 05:44
Given the expression for the total resistance in an electric circuit with two resistors, analyze the expression to tell what happens to the total resistance when the resistance of one resistor increases and the resistance of the other resistor stays the same.

Measuring lengths in different units

mar, 2020-07-28 17:50
Sal measures the same rectangle in different units and then compares the size of the different units.

Identifying value in digits

mar, 2020-07-28 17:50
Sal uses place value to identify the value of digits.

Length word problem example (US Customary)

ven, 2020-07-24 18:05
Sal shows how to solve a length word problem example.

Measuring in inches

ven, 2020-07-24 14:02
Sal measures a flower in inches.

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