Difference between revisions of "KTurtle/C2/Introduction-to-KTurtle/English-timed"
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|To record this tutorial, I am using: | |To record this tutorial, I am using: | ||
| − | * '''Ubuntu Linux OS''' version 12.04. | + | * '''Ubuntu Linux OS''' version 12.04. |
| + | * KTurtle version 0.8.1 beta. | ||
|- | |- | ||
Revision as of 20:10, 16 September 2015
| Time | Narration |
| 00:01 | Hello everybody. Welcome to this tutorial on Introduction to KTurtle. |
| 00:07 | In this tutorial, I will introduce you to the basics of getting started with KTurtle. |
| 00:14 | In this tutorial, we will learn about: |
| 00:17 | * KTurtle Window |
| 00:19 | * Editor |
| 00:20 | * Canvas |
| 00:21 | * Menu Bar |
| 00:22 | * Toolbar. |
| 00:24 | We will also learn about: |
| 00:26 | * Moving the Turtle |
| 00:28 | * Drawing lines and changing directions |
| 00:32 | * Draw a triangle. |
| 00:34 | To record this tutorial, I am using:
|
| 00:47 | What is KTurtle? |
| 00:49 | KTurtle is a free tool to learn basic programming. |
| 00:53 | It is useful for computer aided interactive learning. |
| 00:59 | KTurtle is available for download at: http://edu.kde.org/kturtle/ |
| 01:12 | 'KTurtle'- makes programming easy and accessible. |
| 01:18 | * Helps teach kids basics of mathematics. |
| 01:22 | * Translates commands to speaking language of the programmer. |
| 01:27 | * Translates commands into visuals. |
| 01.31 | We can install KTurtle using Synaptic Package Manager . |
| 01:36 | For more information on Synaptic Package Manager, |
| 01:40 | please refer to Ubuntu Linux tutorials on our website: http://spoken-tutorial.org |
| 01:46 | Let's open a new KTurtle Application. |
| 01:50 | Click on Dash home. |
| 01:52 | In the Search bar, type: "KTurtle" |
| 01:55 | and click on the KTurtle icon. |
| 01:59 | A typical KTurtle window looks like this. |
| 02:02 | This is the Menu-bar. |
| 02:04 | In the menu-bar, on the top, |
| 02:06 | you will find menu items- |
| 02:08 | File, Edit, Canvas, Run, Tools, Settings and Help options. |
| 02:17 | In the toolbar, you can reach for most of the actions used. |
| 02:23 | Editor is on the left where you can type the TurtleScript commands. |
| 02:30 | Most of the functions of the editor can be found in the File and Edit menus. |
| 02:37 | There are several ways to enter the code in the editor. |
| 02:42 | Easiest way is to use an example. |
| 02:46 | Go to File menu > select Examples. |
| 02:50 | Here I will select a flower. |
| 02:53 | Code of the selected example opens in the editor. |
| 02:58 | Click on the Run button from Menu bar or Tool bar to run the code. |
| 03:04 | Another way is to directly type your own code in the editor |
| 03:10 | or copy/paste some code in the editor. |
| 03:13 | For example: from other KTurtle files. |
| 03:18 | Canvas is on the right where Turtle makes your drawings. |
| 03:24 | Turtle draws accordingly to the commands it gets from the editor on the canvas. |
| 03:32 | Run option on the toolbar starts execution of the commands in the editor. |
| 03:39 | It presents a list of execution speeds. |
| 03:43 | Full speed (No highlighting and inspector), |
| 03:46 | Full speed, |
| 03:48 | Slow, |
| 03:49 | Slower, |
| 03:51 | Slowest and |
| 03:52 | Step-by-Step. |
| 03:55 | Abort and Pause options allow you to stop and pause the executions respectively. |
| 04:03 | Let's now Run this code. |
| 04:06 | Turtle draws a flower on the canvas. |
| 04:11 | When you open a new KTurtle application, |
| 04:15 | Turtle is in the middle of the canvas by default. |
| 04:19 | Let's now move the Turtle. |
| 04:22 | Turtle can do three types of moves: |
| 04:25 | It can move forward, it can move backwards. |
| 04:29 | It can turn left or right. |
| 04:32 | It can also jump directly to a position on the screen. |
| 04:38 | Let me zoom into the program text, it may possibly be a little blurred. |
| 04:44 | Let us go through a simple example. |
| 04:48 | In your editor, type the following commands: |
| 04:52 | reset |
| 04:55 | forward 100 |
| 04:58 | turnright 120 |
| 05:02 | forward 100 |
| 05:07 | turnright 120 |
| 05:11 | forward 100 |
| 05:15 | turnright 120 |
| 05:18 | Note that the color of the code changes as we type. |
| 05:23 | This feature is called highlighting. |
| 05:26 | Different types of commands are highlighted differently |
| 05:31 | which makes it easier to read large blocks of code. |
| 05:36 | I will explain the code now. |
| 05:38 | reset command sets Turtle to default position. |
| 05:42 | forward 100 commands Turtle to move forward by 100 pixels. |
| 05:49 | turnright 120 commands Turtle to turn 120 degrees anti-clockwise. |
| 05:56 | Note that these two commands are repeated thrice to draw a triangle. |
| 06:03 | Let's now execute the code. |
| 06:06 | I will choose Slow step so that we understand what commands are being executed. |
| 06:16 | Here the triangle is drawn. |
| 06:19 | Let's look at another example and also learn how to beautify our canvas. |
| 06:26 | Let's draw a triangle using repeat command. |
| 06:30 | I will clear the current program. |
| 06:33 | Let me zoom into the program text to have a clear view. |
| 06:38 | Type the following commands into your editor: |
| 06:41 | reset |
| 06:44 | canvassize space 200, 200 |
| 06:51 | canvascolor space 0, 255, 0 |
| 07:00 | pencolor space 0, 0, 255 |
| 07:08 | penwidth space 2 |
| 07:12 | repeat space 3 within curly braces { |
| 07:19 | forward 100 |
| 07:23 | turnleft 120
} |
| 07:27 | Let me now explain the code. |
| 07:30 | reset command sets Turtle to its default position. |
| 07:34 | canvassize 200, 200 sets the canvas width and height to 200 pixels. |
| 07:42 | canvascolor 0, 255, 0 makes the canvas green. |
| 07:48 | 0, 255 ,0 is a RGB combination where only the green value is set to 255 and the others are set to 0. |
| 08:03 | This makes the canvas green in color. |
| 08:07 | pencolor 0, 0, 255 sets the color of pen to blue. |
| 08:14 | RGB combination where blue value is set to 255. |
| 08:20 | penwidth 2 sets the width of the pen to 2 pixels. |
| 08:27 | repeat command is followed by a number and a list of commands within curly brackets. |
| 08:33 | This repeats the commands within the curly brackets the specified number of times. |
| 08:39 | Here the commands forward 100 and turnleft 120 are within curly brackets. |
| 08:47- | repeat command is followed by the number 3 because a triangle has 3 sides. |
| 08:54 | These commands are run 3 times in a loop. |
| 08:59 | 3 sides of the triangle are drawn. |
| 09:02 | Let's run the code now. |
| 09:05 | I will select slow option for execution of the program. |
| 09:09 | The canvas color becomes green and the Turtle draws a triangle. |
| 09:20 | Let's now save the file. |
| 09:23 | Select File menu > Save As . |
| 09:27 | Save As dialog box opens. |
| 09:30 | I will select Document folder for saving the file. |
| 09:34 | I will type the file name as "Triangle" and click on Save button. |
| 09:41 | Notice that the name of the file appears in the top panel and it is saved as a dot turtle file like all Turtle files. |
| 09:53 | With this we come to the end of this tutorial. |
| 09:57 | Let's summarize. |
| 09:59 | In this tutorial, we have learnt about: |
| 10:02 | * KTurtle's editor, canvas, menubar and toolbar |
| 10:07 | * Move Turtle |
| 10:09 | * Draw lines and change directions |
| 10:13 | * Draw a triangle. |
| 10:15 | As an assignment, I would like you to * draw a square using the commands- |
| 10:21 | forward, backward, turnleft, turnright and repeat. |
| 10:26 | * Set background color, penwidth and pencolor of your choice. |
| 10:32 | * Change values in the RGB combination. |
| 10:37 | Watch the video available at this URL: http://spoken-tutorial.org/What_is_a_Spoken-Tutorial |
| 10:40 | It summarizes the Spoken Tutorial project. |
| 10:44 | If you do not have good bandwidth, you can download and watch it. |
| 10:48 | The Spoken Tutorial Project team: |
| 10:50 | * Conducts workshops using spoken tutorials. |
| 10:53 | * Gives certificates to those who pass an online test. |
| 10:56 | For more details, please write to: contact@spoken-tutorial.org |
| 11:03 | Spoken Tutorial project is a part of the Talk to a Teacher project. |
| 11:08 | It is supported by the National Mission on Education through ICT, MHRD, Government of India. |
| 11:15 | More information on this mission is available at this link: http://spoken-tutorial.org/NMEICT-Intro. |
| 11:20 | The script is contributed by IT for Change Bangaluru. |
| 11:24 | 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
