Safari Live - Day 42 | National Geographic

Hello and welcome to Ed Talks with Khan Academy. I’m Kristin Disarro, the Chief Learning Officer at Khan Academy, and today I am looking forward to talking with Dr. Thomas Guskey about many things learning-related, but particularly grades, grading, and re…

Fun fact: Planet Earth is 4.5 billion years old. Mankind is about 140,000 years old. Let me put that in perspective. If you condense the Earth’s lifespan into 24 hours, that’s one full day. Then we have been here on this planet for, drum roll please, 3 se…

We’re asked to plot the image of point A under a reflection across the line L. So we have our line L here, and we want to plot the image of point A under reflection across line L. Well, one way to think about it is: point A is exactly one, two, three, fou…

Face be Destin. Welcome back to Smarter Every Day! We’re back with Phil Torres, entomologist, and about two years ago I created the video about butterflies. That, about we’re eating a fish, the pits have taken down the fray. That’s not what was happening …

What do you desire? What makes you itch? What sort of a situation would you like? Let’s suppose I do this often in vocational guidance of students. They come to me and say, “Well, we’re getting out of college and

So, in the last video, Sal and I were talking about the Civil War Battle of Antietam. Antietam took place in Maryland on September 17th, 1862. Just to briefly recap, Antietam was the single bloodiest day in American history; over 4,000 people died. Antiet…