The Internet Has Massively Broadened Career Possibilities
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View AllAngle congruence equivalent to having same measure | Congruence | Geometry | Khan Academy
What we’re going to do in this video is demonstrate that angles are congruent if and only if they have the same measure. For our definition of congruence, we will use the rigid transformation definition, which tells us two figures are congruent if and onl…
The Most Persistent Myth
This will revolutionize education. No prediction has been made as often or as incorrectly as that one in 1922. It was Thomas Edison who declared that the motion picture is destined to revolutionize our educational system and that in a few years it will su…
How I spent $50,000 in South America - Not Forgotten SED 107
Hey it’s me Destin, welcome back to Smarter Every Day.
So the purpose of this particular video is to convince you to click at the end of the video on one thing that will change a child’s life. If you’re an evil person and you want to do bad things to lit…
Weak acid–weak base reactions | Acids and bases | AP Chemistry | Khan Academy
Let’s say that HA represents a generic weak acid and B represents a generic weak base. If our weak acid donates a proton to our weak base, that would form A⁻ and HB⁺. To identify conjugate acid-base pairs, remember there’s only one proton, or one H⁺ diffe…
This Is What It's Like to Live at the Edge of a Volcano | Short Film Showcase
In Indonesia, living with the volcano is part of who we are. The fortune is a symbol of the place where the gods stay. We don’t know when; we don’t know why, but at some point they just awaken. The volcano creates the most fertile soil on earth, and we gr…
The Fall of Empires | World History | Khan Academy
Steve: “What are we doing here?
Hey, sell, we’re going to look at this question of why do Empires fall. For those of you who don’t know, Steve Shrer, he is a world history fellow here at Khan Academy, and also a former world history teacher. So, what we …