Difference between revisions of "KTurtle/C3/Question-Glues/English-timed"
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Revision as of 14:31, 9 July 2014
| Time | Narration |
| 00:01 | Hello and welcome to the spoken tutorial on Question Glues in KTurtle. |
| 00:08 | In this tutorial, we will learn the following question glues and, not |
| 00:16 | To record this tutorial I am using,Ubuntu Linux OS Version 12.04. KTurtle version 0.8.1 beta. |
| 00:29 | We assume that you have basic working knowledge of KTurtle and “if-else” statement in KTurtle |
| 00:39 | If not, for relevant tutorials, please visit our website. http://spoken-tutorial.org |
| 00:46 | Before proceeding, let me explain about question glue words. |
| 00:51 | Question glue words enable us to glue small questions into one big question. |
| 01:00 | “and”, “or” and “not” are some glue-words.Glue-words are used together with if-else conditions. |
| 01:11 | Let's open a new KTurtle Application. |
| 01:15 | Click on Dash home. |
| 01:18 | In the Search bar, type KTurtle. |
| 01:22 | And Click on the option. |
| 01:24 | Let's begin the tutorial with glue word and. |
| 01:28 | I already have a program in a text editor. |
| 01:33 | Let me copy the code from the text editor and paste it into KTurtle editor. |
| 01:40 | Please pause the tutorial here and type the program into your KTurtle editor. |
| 01:46 | Resume the tutorial after typing the program. |
| 01:50 | Let me zoom into the program text. |
| 01:52 | It may possibly be a little blurred. |
| 01:56 | Let's look the code. |
| 01:59 | reset command sets Turtle to its default position. |
| 02:04 | Message in a program is given within double quotes after the keyword message " " . |
| 02:10 | “message” command takes “string” as input. |
| 02:14 | It shows a pop-up dialog box containing text from the string and also generates a beep for non null strings. |
| 02:24 | $a, $b and $c are variables that store user input. |
| 02:30 | “ask” command prompts for user input to be stored in variables. |
| 02:36 | if(($a+$b>$c) and ($b+$c>$a) and ($c+$a>$b), checks the “if” condition. |
| 02:49 | When the two questions glued with “and” are true, result is true. |
| 02:55 | 'if(($a !=$b) and ($b != $c) and ($c != $a)) checks the if condition. |
| 03:05 | when 'if' condition above is true, control moves into nested if block. |
| 03:12 | It checks whether sides of triangle are unequal. |
| 03:17 | fontsize 18 sets the font size used by print command. |
| 03:22 | go 10,100 commands Turtle to go 10 pixels from left of canvas and 100 pixels from top of canvas. |
| 03:35 | print command displays the string after checking the if condition. |
| 03:41 | else command checks else condition, when if condition in the block is false |
| 03:48 | print command displays the string after checking the else condition. |
| 03:54 | else command checks the final condition. |
| 03:57 | Here else is checked only when above conditions are false. |
| 04:03 | print command displays the string after checking the else condition. I will run the code to check all the conditions. |
| 04:12 | Let's click on the Run button to run the program. |
| 04:15 | A message dialog box pops- up.Let me click OK. |
| 04:20 | Let's Enter 5 for 'length of AB' and click OK |
| 04:25 | 8 for 'length of BC' and click OK |
| 04:29 | 9 for 'length of AC' and click OK |
| 04:33 | “A scalene triangle” is displayed on the canvas. |
| 04:37 | Lets run again. |
| 04:40 | A message dialog box pops up .Let me click OK. |
| 04:44 | Lets Enter 5 for length of 'AB' and click OK,6 for length of 'BC' and click OK, 6 for length of 'AC' and click OK. |
| 04:58 | “ Not a scalene triangle” is displayed on the canvas. |
| 05:02 | Let's run again to check default condition. |
| 05:06 | A message dialog box pops up. Let me click ok. |
| 05:11 | Let's Enter 1 for length of 'AB' and click OK. |
| 05:16 | 1 for length of 'BC' and click OK. |
| 05:20 | 2 for length of 'AC' and click OK. |
| 05:24 | " Does not satisfy triangle's inequality " is displayed on the canvas. |
| 05:30 | Let's now clear this program. Let me type clear command and run clear command cleans the canvas . |
| 05:40 | let's next work with 'not condition. |
| 05:43 | Let me copy the program from the text editor and paste it into KTurtle editor. |
| 05:51 | Please pause the tutorial here and type the program into your KTurtle editor. |
| 05:56 | Resume the tutorial after typing the program. |
| 06:01 | Let me zoom into the program text and explain the program. |
| 06:05 | reset command sets Turtle to default position. |
| 06:09 | $a, $b and $c are variables that store user input. |
| 06:15 | if not (($a==$b) and ($b==$c) and ($c==$a))checks the if not condition. |
| 06:27 | not is a special question glue-word. It inverses the logical state of its operand. |
| 06:36 | e.g. If the given condition is true, not makes it false. |
| 06:42 | And when the condition is false the output will be true. |
| 06:48 | print command displays the string after checking the if not condition. |
| 06:55 | else command is executed when if condition is false. |
| 07:01 | print command displays the string after checking the else condition. |
| 07:07 | go 100,100 commands Turtle to go 100 pixels from left of canvas and 100 pixels from top of canvas |
| 07:20 | repeat 3{turnright 120 forward 100} commands turtle to draws an equilateral triangle on the canvas |
| 07:32 | Let me run the program to check all the conditions. |
| 07:36 | Press F5 key to run the code. |
| 07:40 | Enter 6 for length of AB and click OK |
| 07:45 | Enter 5 for length of BC and click OK |
| 07:48 | Enter 7 for length of AC and click OK |
| 07:54 | “Triangle is not equilateral” is displayed on the canvas. |
| 07:58 | Let's run again. Let's enter 5 for length of AB and click ok. |
| 08:05 | 5 for length of BC and click ok. |
| 08:09 | 5 for length of AC and click OK |
| 08:13 | “Triangle is equilateral” is displayed on the canvas. An equilateral triangle is drawn on the canvas. |
| 08:21 | With this we come to the end of this tutorial. |
| 08:25 | Let's summarize |
| 08:28 | In this tutorial we have learnt, the question glues and not |
| 08:35 | As an assignment, I would like you to write program to determine |
| 08:40 | Angle concept for right angled triangle using question glue “or” |
| 08:48 | Structure of if or condition is: |
| 08:51 | if within brackets condition or within brackets condition or within brackets condition. |
| 08:59 | Within curly brackets do something. |
| 09:02 | else within curly brackets do something. |
| 09:06 | Watch the video available at this URLhttp://spoken-tutorial.org/What is a Spoken Tutorial |
| 09:10 | It summarises the Spoken Tutorial project |
| 09:13 | If you do not have good bandwidth, you can download and watch it |
| 09:18 | The Spoken Tutorial Project Team : |
| 09:20 | Conducts workshops using spoken tutorials |
| 09:23 | Gives certificates to those who pass an online test |
| 09:27 | For more details, please write to contact@spoken-tutorial.org |
| 09:34 | Spoken Tutorial Project is a part of the Talk to a Teacher project. |
| 09:38 | It is supported by the National Mission on Education through ICT, MHRD, Government of India |
| 09:44 | More information on this Mission is available at this link http://spoken-tutorial.org/NMEICT-Intro ] |
| 09:49 | This is Madhuri Ganpathi from IIT Bombay signing off.
Thank you for joining |
Contributors and Content Editors
Devraj, Madhurig, PoojaMoolya, Pratik kamble, Sandhya.np14, Sneha
