Let's Fly!: Crash Course Kids 26.2 - By Crash Course Kids
Transcript
| 00:09 | Hey there . Future engineers , welcome back . We | |
| 00:11 | ended our last engineering lesson which was all about coming | |
| 00:14 | up with multiple solutions to a single problem on a | |
| 00:17 | bit of a cliffhanger . So let's jump back in | |
| 00:19 | and see if we can answer the question we asked | |
| 00:21 | at the end of that lesson is one solution even | |
| 00:23 | better than another . Yeah , let's do a quick | |
| 00:29 | recap . You remember that an engineer is a person | |
| 00:32 | who designs and builds things to solve specific problems . | |
| 00:35 | The process they follow when they're doing this is called | |
| 00:37 | the engineering process or a series of steps that engineers | |
| 00:40 | use to guide them as they work towards a solution | |
| 00:42 | for whatever their particular problem is , scratch that , | |
| 00:45 | not solution , singular solutions , plural . Real engineers | |
| 00:49 | always brainstorm more than one solution to a single problem | |
| 00:52 | this way , if one possible solution doesn't work , | |
| 00:54 | they always have more options to test . So how | |
| 00:57 | do engineers figure out which solution is the best solution | |
| 01:00 | ? Well , engineers put a lot of thought into | |
| 01:02 | deciding which might work best for their problem . They | |
| 01:05 | look at each of the solutions they brainstormed in a | |
| 01:07 | logical or reasonable way and ask questions about each option | |
| 01:11 | . Think of it sort of like making a list | |
| 01:13 | of pros and cons or strengths and weaknesses for each | |
| 01:17 | possibility . Ready to try thinking like an engineer . | |
| 01:19 | Cool . Let's do this . Mm . We'll examine | |
| 01:26 | all three of the possible solutions we came up with | |
| 01:28 | last time to our gorge problem and see if we | |
| 01:30 | can figure out which one is the best solution . | |
| 01:33 | First up is our up solution . Building a balloon | |
| 01:36 | powered airlift . Let's take a look at the solution | |
| 01:38 | strengths . First , does it meet our original requirements | |
| 01:41 | for being a good solution ? Well , it's sort | |
| 01:44 | of meets requirement to , since it involves some materials | |
| 01:46 | we already have , namely balloons , but it also | |
| 01:49 | requires materials we don't have like a helium tank . | |
| 01:52 | I mean we can't blow up the balloons with our | |
| 01:54 | own lung power and expect them to lift us across | |
| 01:57 | the gorge in order for the balloons to float up | |
| 01:59 | , they need to be filled with helium gas or | |
| 02:01 | maybe really hot air like in a hot air balloon | |
| 02:04 | . And we don't have either of those . As | |
| 02:06 | for requirement three , we should be able to use | |
| 02:08 | them as balloons again on the other side if we | |
| 02:10 | want to . So that's something . But what about | |
| 02:12 | requirement number one ? Remember the one about getting us | |
| 02:15 | to the other side alive ? Well , as an | |
| 02:17 | engineer , it's important to think big and sometimes that | |
| 02:20 | involves crazy ideas that people would never thought possible , | |
| 02:24 | like spaceships or computers . There's nothing wrong with thinking | |
| 02:27 | like that . And you totally should think like that | |
| 02:30 | during the engineering process , but sometimes you have to | |
| 02:33 | be logical and no one an idea is too crazy | |
| 02:36 | and in this case unsafe . And I'm sorry to | |
| 02:39 | break it to you guys . But one pack of | |
| 02:41 | balloons filled with regular old air , no matter how | |
| 02:43 | big you blow them up , won't get us to | |
| 02:45 | the other side of the Gorge . Alive . A | |
| 02:47 | real engineer would test this on solid ground and come | |
| 02:50 | to the same conclusion , but that's okay . We | |
| 02:52 | have two other solutions to look at . Our next | |
| 02:55 | solution is our mary Poppins style solution floating over the | |
| 02:58 | gorge with our umbrella . Like our first solution , | |
| 03:01 | this involves materials , we have an umbrella and we'd | |
| 03:03 | be able to reuse the umbrella again on the other | |
| 03:05 | side of the gorge if we needed to . But | |
| 03:07 | what about our other stuff ? If we're using one | |
| 03:09 | hand to hold our umbrella , we'll only have one | |
| 03:12 | hand free to carry our other stuff like our tent | |
| 03:14 | . And that stuff would probably weigh us down as | |
| 03:17 | we try to float across the gorge . So once | |
| 03:19 | again , we need to ask , will this solution | |
| 03:21 | get us to the other side alive ? Sorry , | |
| 03:24 | again . But I'm thinking no , our umbrella is | |
| 03:27 | not very big and this gorge is even if we | |
| 03:30 | get a good running start , if we leap off | |
| 03:32 | this gorge , we won't float all the way across | |
| 03:34 | with our small umbrella . Plus we probably have to | |
| 03:37 | leave our other stuff behind . After all , mary | |
| 03:39 | Poppins was make believe , not real . So pretend | |
| 03:42 | solutions won't work for real engineers and just like in | |
| 03:45 | the first solution , if engineers were to test this | |
| 03:47 | , they find that they couldn't get a float with | |
| 03:49 | an umbrella . But fear not brave engineers are final | |
| 03:52 | solution a way to hang glide or not to hang | |
| 03:55 | glide . Okay , requirement number two . We can | |
| 03:57 | try the solution with the materials . We already have | |
| 04:00 | our tent , requirement number three , we can disassemble | |
| 04:02 | the glider on the other side and reuse it . | |
| 04:04 | As a tent bonus , we'll have to carry less | |
| 04:06 | of our stuff across the gorge because some of it | |
| 04:09 | will already be on our back time . For the | |
| 04:11 | big question , will we get across alive ? A | |
| 04:14 | good engineer with a good , sturdy tent and the | |
| 04:17 | knowledge of how to build a working hang glider might | |
| 04:20 | just be able to create something that would get them | |
| 04:22 | to the other side . But they would test the | |
| 04:24 | solution many , many , many , many times before | |
| 04:27 | they actually let me or some other person try it | |
| 04:30 | for real . Did I mention that they would test | |
| 04:32 | it many times . And if for some reason the | |
| 04:36 | hang glider didn't work , the engineer would go back | |
| 04:38 | to the drawing board and come up with even more | |
| 04:41 | possible solutions , so as cool as it might be | |
| 04:44 | to float across a gorge via a bunch of balloons | |
| 04:46 | or by holding onto an umbrella , the hang glider | |
| 04:48 | option seems to have more strength and fewer weaknesses than | |
| 04:51 | the other two . And even though the hang glider | |
| 04:53 | might not end up being the winning solution to this | |
| 04:55 | problem , it's the best of the options we have | |
| 04:57 | now . Yeah , which means the drum roll , | |
| 05:04 | please , yep . Some solutions are better than others | |
| 05:08 | . By thinking logically asking questions and looking at potential | |
| 05:11 | solutions , strengths and weaknesses , you can determine which | |
| 05:14 | solution is the best solution to a problem . Happy | |
| 05:17 | engineering . |
Summarizer
DESCRIPTION:
OVERVIEW:
Let's Fly!: Crash Course Kids 26.2 is a free educational video by Crash Course Kids.
This page not only allows students and teachers view Let's Fly!: Crash Course Kids 26.2 videos but also find engaging Sample Questions, Apps, Pins, Worksheets, Books related to the following topics.
GRADES:
STANDARDS:
