So, we've built a lot of things over the last year and we've become awesome engineers in the process. But now it's time for a real challenge. Let's build a city! That's right, you heard me! In this episode, Sabrina shows us what we need to think about when we start engineering something as huge and full of problems as a city! ///Standards Used in This Video/// 3-5-ETS1-1. Define a simple design problem reflecting a need or a want that includes specified criteria for success and constraints on materials, time, or cost. Want to find Crash Course elsewhere on the internet? Crash Course Main Channel: https://www.youtube.com/crashcourse Facebook - https://www.facebook.com/YouTubeCrash... Twitter - http://www.twitter.com/thecrashcourse Tumblr - http://thecrashcourse.tumblr.com Credits... Producer & Editor: Nicholas Jenkins Cinematographer & Director: Michael Aranda Host: Sabrina Cruz Script Supervisor: Mickie Halpern Writer: Allyson Shaw Executive Producers: John & Hank Green Consultant: Shelby Alinsky Script Editor: Blake de Pastino Thought Cafe Team: Stephanie Bailis Cody Brown Suzanna Brusikiewicz Jonathan Corbiere Nick Counter Kelsey Heinrichs Jack Kenedy Corey MacDonald Tyler Sammy Nikkie Stinchcombe James Tuer Adam Winnik