Safari Live - Day 129 | National Geographic

So I have an uncompressed spring here, and this spring has a spring constant of 4 newtons per meter. Then, I take a 10 gram mass, a 10 gram ball, and I put it at the top of the spring. I push down to compress that spring by 10 centimeters. Let’s call that…

[Voiceover] A lot of users of Khan Academy, especially teachers, don’t fully know how much we have mapped and how much we have invested in the actual Common Core. As I often point out to folks, a standard is one thing, and the Common Core standards are de…

In this video, we’re going to introduce ourselves to the idea of adding decimals, and I encourage you, as we work through these problems, to keep pausing the video and seeing if you can think about it on your own before we work through it together. We’re …

Hey there wordsmiths! This video is about the word impose. Impose, it’s a verb, and it means to force something onto others, kind of like how I impose my taste in music on you in these videos. You didn’t ask for this; I just put it on to you, which is in…

We are here to document the lives of people living in Alaska. The harsh reality is the environment we’re up against. It makes it tough to do our job. Get out of there, working on Life Below Zero can be very dangerous. Guns here, cameras here, never know w…

What’s up, guys? It’s Graham here. So, as some of you know, after spending my entire life in California, one year ago, I decided to leave. It was a difficult decision, but ultimately we felt like the increased cost of living, decreasing quality of life, t…