Difference between revisions of "KTurtle/C2/Grammar-of-TurtleScript/English-timed"

From Script | Spoken-Tutorial
Jump to: navigation, search
 
(4 intermediate revisions by the same user not shown)
Line 5: Line 5:
 
|-
 
|-
 
||00:01
 
||00:01
−
||Hello everybody.
+
||Hello everybody.Welcome to this tutorial on '''Grammar of TurtleScript''' in '''KTurtle'''.  
−
 
+
−
|-
+
−
||00:02
+
−
||Welcome to this tutorial on '''Grammar of TurtleScript''' in '''KTurtle'''.  
+
  
 
|-
 
|-
Line 17: Line 13:
 
|-
 
|-
 
||00:11
 
||00:11
−
|| grammar of '''Turtle script'''  and  ''''if'-'else'''' condition.
+
||grammar of '''Turtle script'''  and  ''''if'-'else'''' condition.
 +
 
 
|-
 
|-
 
||00:16
 
||00:16
 
||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'''.  
+
'''KTurtle''' version '''0.8.1''' '''beta'''.  
 +
 
 
|-
 
|-
−
|| 00:29
+
||00:29
 
||We assume that you have basic working knowledge of KTurtle.  
 
||We assume that you have basic working knowledge of KTurtle.  
  
 
|-
 
|-
 
||00:35
 
||00:35
−
||If not, for relevant tutorials, please visit our website:
+
||If not, for relevant tutorials, please visit our website: http://spoken-tutorial.org  
−
http://spoken-tutorial.org  
+
 
 
|-
 
|-
 
||00:40
 
||00:40
Line 46: Line 44:
 
||00:49
 
||00:49
 
||Click on the '''KTurtle''' icon.  
 
||Click on the '''KTurtle''' icon.  
 +
 
|-
 
|-
 
||00:52
 
||00:52
Line 57: Line 56:
 
||01:01
 
||01:01
 
||Type '''kturtle'''  and press '''Enter''' to open the 'KTurtle' Application.
 
||Type '''kturtle'''  and press '''Enter''' to open the 'KTurtle' Application.
 +
 
|-
 
|-
 
||01:08
 
||01:08
Line 63: Line 63:
 
|-
 
|-
 
||01:11
 
||01:11
−
|| '''TurtleScript''' is a programming language.  
+
||'''TurtleScript''' is a programming language.  
  
 
|-
 
|-
Line 71: Line 71:
 
|-
 
|-
 
||01:21  
 
||01:21  
−
|| It instructs Turtle what to do.
+
||It instructs Turtle what to do.
 +
 
 
|-
 
|-
 
||01:25  
 
||01:25  
Line 78: Line 79:
 
|-
 
|-
 
||01:30  
 
||01:30  
−
||* '''Comment'''s
+
||'''Comments''', '''Commands'''
−
 
+
−
|-
+
−
||01:31
+
−
||* '''Command'''s
+
  
 
|-
 
|-
 
||01:32
 
||01:32
−
||* Numbers
+
|| Numbers, '''Strings'''
−
 
+
−
|-
+
−
||01:33
+
−
||* '''String'''s
+
  
 
|-
 
|-
 
||01:34
 
||01:34
−
||* '''Variable'''s and
+
||'''Variable'''s and
  
 
|-
 
|-
 
||01:36
 
||01:36
−
||* '''Boolean value'''s.
+
||'''Boolean value'''s.
 +
 
 
|-
 
|-
 
||01:38
 
||01:38
Line 109: Line 103:
 
|-
 
|-
 
||01:44
 
||01:44
−
||* Mathematical operators
+
||Mathematical operators
  
 
|-
 
|-
 
||01:46
 
||01:46
−
||* Comparison operators and
+
||Comparison operators and
  
 
|-
 
|-
 
||01:49
 
||01:49
−
||* Variables
+
||Variables,I will zoom the program text for clear view.
−
|-
+
 
−
||01:50
+
−
||I will zoom the program text for clear view.
+
 
|-
 
|-
 
||01:54
 
||01:54
Line 130: Line 122:
  
 
|-
 
|-
−
|| 02:04
+
||02:04
 
||Variables are highlighted in purple color.  
 
||Variables are highlighted in purple color.  
  
Line 143: Line 135:
 
|-
 
|-
 
||02:20
 
||02:20
−
||* '''string'''s '''$a=hello''' or  
+
||'''string'''s '''$a=hello''' or  
  
 
|-
 
|-
 
||02:25
 
||02:25
−
||* boolean values that is '''true''' or '''false''' '''$a=true'''.
+
||boolean values that is '''true''' or '''false''' '''$a=true'''.
  
 
|-
 
|-
Line 168: Line 160:
 
||02:55
 
||02:55
 
||'''print $a + $b'''  
 
||'''print $a + $b'''  
 +
 
|-
 
|-
 
||03:01
 
||03:01
Line 181: Line 174:
  
 
|-
 
|-
−
|| 03:15
+
||03:15
 
||'''print'''  command takes numbers and strings as '''input'''.  
 
||'''print'''  command takes numbers and strings as '''input'''.  
  
Line 187: Line 180:
 
||03:19
 
||03:19
 
||'''print $a + $b'''  commands '''Turtle''' to add two values and display them on the canvas.
 
||'''print $a + $b'''  commands '''Turtle''' to add two values and display them on the canvas.
 +
 
|-
 
|-
−
|| 03:29
+
||03:29
 
||Let's '''Run''' the code in '''slow''' speed.
 
||Let's '''Run''' the code in '''slow''' speed.
  
Line 194: Line 188:
 
||03:34
 
||03:34
 
||Value '''2029''' is displayed on the canvas.
 
||Value '''2029''' is displayed on the canvas.
 +
 
|-
 
|-
−
||03.40
+
||03:40
 
||Let us next see the mathematical operators.
 
||Let us next see the mathematical operators.
  
Line 201: Line 196:
 
||03:44
 
||03:44
 
||Mathematical operators include -
 
||Mathematical operators include -
 +
'+' (Addition)
  
−
* '+' (Addition)  
+
'-' (Subtraction)  
  
−
* '-' (Subtraction)  
+
'*' (Multiplication) and
  
−
* '*' (Multiplication) and
+
'/' (Division)
  
−
* '/' (Division)
 
 
|-
 
|-
 
||03:53
 
||03:53
 
|| I will clear the current code from the editor and type "clear" command and '''Run''' to clean the canvas.
 
|| I will clear the current code from the editor and type "clear" command and '''Run''' to clean the canvas.
 +
 
|-
 
|-
 
||04:01
 
||04:01
 
||I already have a program in a text-editor.  
 
||I already have a program in a text-editor.  
 +
 
|-
 
|-
 
||04:05
 
||04:05
 
||I will explain the code now.
 
||I will explain the code now.
 +
 
|-
 
|-
 
||04:08
 
||04:08
 
||'''“reset”''' command sets Turtle to its '''default''' position.
 
||'''“reset”''' command sets Turtle to its '''default''' position.
 +
 
|-
 
|-
 
||04:12
 
||04:12
 
||'''canvassize 200,200''' fixes the width and height of the canvas to 200 pixels each.  
 
||'''canvassize 200,200''' fixes the width and height of the canvas to 200 pixels each.  
 +
 
|-
 
|-
 
||04:22
 
||04:22
 
|| Value '''1+1''' is assigned to the variable''' $add'''.  
 
|| Value '''1+1''' is assigned to the variable''' $add'''.  
 +
 
|-
 
|-
 
||04:26
 
||04:26
 
||Value '''20-5''' is assigned to the variable '''$subtract'''.  
 
||Value '''20-5''' is assigned to the variable '''$subtract'''.  
 +
 
|-
 
|-
 
||04:31
 
||04:31
 
||Value '''15 * 2''' is  assigned to the variable '''$multiply.'''  
 
||Value '''15 * 2''' is  assigned to the variable '''$multiply.'''  
 +
 
|-
 
|-
 
||04:36
 
||04:36
 
||'''30/30''' is assigned to the variable '''$divide.'''  
 
||'''30/30''' is assigned to the variable '''$divide.'''  
 +
 
|-
 
|-
 
||04:40
 
||04:40
 
||'''go 10,10''' commands  '''Turtle''' to go 10 pixels left of canvas and 10 pixels from top of canvas.
 
||'''go 10,10''' commands  '''Turtle''' to go 10 pixels left of canvas and 10 pixels from top of canvas.
 +
 
|-
 
|-
 
||04:52
 
||04:52
 
||'''print''' command displays the variable on the canvas.
 
||'''print''' command displays the variable on the canvas.
 +
 
|-
 
|-
 
||04:56
 
||04:56
Line 253: Line 259:
 
||05:08
 
||05:08
 
||Resume the tutorial after typing the program.
 
||Resume the tutorial after typing the program.
 +
 
|-
 
|-
 
||05:13
 
||05:13
Line 264: Line 271:
 
||05:22
 
||05:22
 
||'''Turtle''' displays the values on the canvas at the specified positions.  
 
||'''Turtle''' displays the values on the canvas at the specified positions.  
 +
 
|-
 
|-
 
||05:34
 
||05:34
Line 269: Line 277:
  
 
|-
 
|-
−
|| 05:41
+
||05:41
−
|| I will clear the current code from the editor. Type '''"clear"''' command and '''Run''' to clean the canvas.
+
||I will clear the current code from the editor. Type '''"clear"''' command and '''Run''' to clean the canvas.
 +
 
 
|-
 
|-
−
|| 05:49
+
||05:49
 
||I will  zoom the program text to have a clear view.
 
||I will  zoom the program text to have a clear view.
 +
 
|-
 
|-
−
|| 05:53
+
||05:53
 
||Let's type:  
 
||Let's type:  
  
Line 297: Line 307:
 
||06:19
 
||06:19
 
||variable '''$answer''' and the value 'true' is displayed on the canvas.
 
||variable '''$answer''' and the value 'true' is displayed on the canvas.
 +
 
|-
 
|-
−
|| 06:27
+
||06:27
 
||Let's run the code now.
 
||Let's run the code now.
  
Line 304: Line 315:
 
||06:29
 
||06:29
 
||'''Turtle''' displays Boolean value 'true' on the canvas.
 
||'''Turtle''' displays Boolean value 'true' on the canvas.
 +
 
|-
 
|-
 
||06:34
 
||06:34
−
||Now, let's see how '''String'''s work in this application-
+
||Now,let's see how '''String'''s work in this application-
  
 
|-
 
|-
 
||06:39
 
||06:39
−
||* Strings can be put in variables like numbers.  
+
||Strings can be put in variables like numbers.  
  
 
|-
 
|-
 
||06:43
 
||06:43
−
||* Strings cannot be used in mathematical or comparison operators.  
+
||Strings cannot be used in mathematical or comparison operators.  
  
 
|-
 
|-
 
||06:49
 
||06:49
−
||* Strings are highlighted in red color.  
+
||Strings are highlighted in red color.  
  
 
|-
 
|-
 
||06:53
 
||06:53
 
||'KTurtle' identifies a line in double quotes as a string.
 
||'KTurtle' identifies a line in double quotes as a string.
 +
 
|-
 
|-
−
|| 07:00
+
||07:00
 
||I will clear the current code from editor. Type "clear" command and '''Run''' to clean the canvas.
 
||I will clear the current code from editor. Type "clear" command and '''Run''' to clean the canvas.
 +
 
|-
 
|-
−
|| 07:08
+
||07:08
 
||Now, I will explain about Boolean values.
 
||Now, I will explain about Boolean values.
  
Line 333: Line 347:
 
||07:11
 
||07:11
 
||There are only two '''boolean''' values: "true" and "false".  
 
||There are only two '''boolean''' values: "true" and "false".  
 +
 
|-
 
|-
 
||07:16
 
||07:16
Line 348: Line 363:
 
||07:34
 
||07:34
 
||The '''Boolean value''' 'false' is assigned to the  variable''' $answer'''  because 7 is greater than 5.
 
||The '''Boolean value''' 'false' is assigned to the  variable''' $answer'''  because 7 is greater than 5.
 +
 
|-
 
|-
−
|| 07:43
+
||07:43
 
||Let's '''Run''' the code now.
 
||Let's '''Run''' the code now.
  
Line 355: Line 371:
 
||07:47
 
||07:47
 
||'''Turtle''' displays '''Boolean''' value "false" on the canvas.
 
||'''Turtle''' displays '''Boolean''' value "false" on the canvas.
 +
 
|-
 
|-
−
|| 07:51
+
||07:51
 
||Let's next learn about “if-else” conditon.
 
||Let's next learn about “if-else” conditon.
  
Line 366: Line 383:
 
||08:03
 
||08:03
 
||‘else’ condition is executed only if the ‘if’ condition is ‘false’.
 
||‘else’ condition is executed only if the ‘if’ condition is ‘false’.
 +
 
|-
 
|-
−
|| 08:09
+
||08:09
 
||I will clear the current code from editor. Type "clear" command and '''Run''' to clean the canvas.
 
||I will clear the current code from editor. Type "clear" command and '''Run''' to clean the canvas.
 +
 
|-
 
|-
 
||08:17
 
||08:17
 
||I already have a code in a text file.
 
||I already have a code in a text file.
 +
 
|-
 
|-
−
|| 08:21
+
||08:21
 
||This code compares numbers 4 , 5 and 6 and displays the results accordingly on the canvas.
 
||This code compares numbers 4 , 5 and 6 and displays the results accordingly on the canvas.
 +
 
|-
 
|-
 
||08:30
 
||08:30
Line 386: Line 407:
 
||08:42
 
||08:42
 
||Resume the tutorial after typing the program.
 
||Resume the tutorial after typing the program.
 +
 
|-
 
|-
−
|| 08:46
+
||08:46
 
||Let's '''run''' the code now.
 
||Let's '''run''' the code now.
  
Line 397: Line 419:
 
||08:53
 
||08:53
 
||and has displayed the result: "4 is smaller than 6" on the canvas.  
 
||and has displayed the result: "4 is smaller than 6" on the canvas.  
 +
 
|-
 
|-
 
||09:00
 
||09:00
Line 404: Line 427:
 
||09:05
 
||09:05
 
||Let's summarize.
 
||Let's summarize.
 +
 
|-
 
|-
 
||09:07
 
||09:07
Line 410: Line 434:
 
|-
 
|-
 
||09:11
 
||09:11
−
||* Grammar of Turtle script  and
+
||Grammar of Turtle script  and
  
 
|-
 
|-
 
||09:14
 
||09:14
−
||* ‘if-else’ condition.  
+
||‘if-else’ condition.  
 +
 
 
|-
 
|-
 
||09:17
 
||09:17
Line 429: Line 454:
 
|-
 
|-
 
||09:24
 
||09:24
−
|| Mathematical  and comparison  operators.
+
||Mathematical  and comparison  operators.
  
 
|-
 
|-
 
||09:27
 
||09:27
−
|| Display the results using  “print” and “go” commands.  
+
||Display the results using  “print” and “go” commands.  
 +
 
 
|-
 
|-
 
||09:33
 
||09:33
Line 444: Line 470:
 
|-
 
|-
 
||09:38
 
||09:38
−
|| multiply two sets of random numbers,
+
||multiply two sets of random numbers,
  
 
|-
 
|-
Line 452: Line 478:
 
|-
 
|-
 
||09:46
 
||09:46
−
|| display both the results,  
+
||display both the results,  
  
 
|-
 
|-
 
||09:49
 
||09:49
−
|| display greater result at the  center of the canvas.  
+
||display greater result at the  center of the canvas.  
  
 
|-
 
|-
 
||09:54
 
||09:54
−
|| You can choose any equation which you like.  
+
||You can choose any equation which you like.  
 +
 
 
|-
 
|-
 
||09:59
 
||09:59
−
||Watch the video available at this URL:
+
||Watch the video available at this URL: http://spoken-tutorial.org/What_is_a_Spoken-Tutorial
−
http://spoken-tutorial.org/What_is_a_Spoken-Tutorial
+
  
 
|-
 
|-
Line 475: Line 501:
  
 
|-
 
|-
−
|| 10:12
+
||10:12
 
||The Spoken Tutorial project team :  
 
||The Spoken Tutorial project team :  
  
 
|-
 
|-
 
||10:14
 
||10:14
−
||* Conducts workshops using spoken tutorials.
+
||Conducts workshops using spoken tutorials.
  
 
|-
 
|-
 
||10:18
 
||10:18
−
||* Gives certificates to those who pass an online test.  
+
||Gives certificates to those who pass an online test.  
  
 
|-
 
|-
 
||10:22
 
||10:22
−
||For more details, please write to:
+
||For more details, please write to: contact@spoken-tutorial.org  
−
contact@spoken-tutorial.org  
+
 
 
|-
 
|-
−
|| 10:30
+
||10:30
 
||'''Spoken Tutorial''' project is a part of the '''Talk to a Teacher''' project.  
 
||'''Spoken Tutorial''' project is a part of the '''Talk to a Teacher''' project.  
  
Line 500: Line 526:
 
|-
 
|-
 
||10:43
 
||10:43
−
||More information on this mission is available at this link:
+
||More information on this mission is available at this link: http://spoken-tutorial.org/NMEICT-Intro   
−
http://spoken-tutorial.org/NMEICT-Intro   
+
  
 
|-
 
|-

Latest revision as of 17:12, 24 March 2017

Time Narration
00:01 Hello everybody.Welcome to this tutorial on Grammar of TurtleScript in KTurtle.
00:08 In this tutorial, we will learn about
00:11 grammar of Turtle script and 'if'-'else' condition.
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.
00:35 If not, for relevant tutorials, please visit our website: http://spoken-tutorial.org
00:40 Let's open a new KTurtle Application.
00:43 Click on Dash home.
00:45 In the Search bar, type: "kturtle".
00:49 Click on the KTurtle icon.
00:52 We can also open KTurtle using Terminal.
00:56 Press Ctrl+Alt+T keys simultaneously to open the Terminal.
01:01 Type kturtle and press Enter to open the 'KTurtle' Application.
01:08 Let's first look at TurtleScript.
01:11 TurtleScript is a programming language.
01:15 It has different types of words and symbols used for various purposes.
01:21 It instructs Turtle what to do.
01:25 Grammar of TurtleScript in KTurtle includes-
01:30 Comments, Commands
01:32 Numbers, Strings
01:34 Variables and
01:36 Boolean values.
01:38 Now, we will see where to store numbers.
01:42 Numbers can be stored in:
01:44 Mathematical operators
01:46 Comparison operators and
01:49 Variables,I will zoom the program text for clear view.
01:54 First let's look at variables.
01:57 Variables are words that start with ‘$’ sign, for example $a.
02:04 Variables are highlighted in purple color.
02:09 Using the assignment equal to (=), a variable is given its contents.
02:14 Variables can contain- * numbers $a=100.
02:20 strings $a=hello or
02:25 boolean values that is true or false $a=true.
02:32 Variable keeps the contents until program finishes execution or until it is reassigned to something else.
02:41 For example, consider the code.
02:44 Let us type:$a = 2004
02:50 $b = 25
02:55 print $a + $b
03:01 Variable 'a' is assigned a value 2004.
03:06 Variable 'b' is assigned a value 25.
03:10 print command, commands Turtle to write something on the canvas.
03:15 print command takes numbers and strings as input.
03:19 print $a + $b commands Turtle to add two values and display them on the canvas.
03:29 Let's Run the code in slow speed.
03:34 Value 2029 is displayed on the canvas.
03:40 Let us next see the mathematical operators.
03:44 Mathematical operators include -

'+' (Addition)

'-' (Subtraction)

'*' (Multiplication) and

'/' (Division)

03:53 I will clear the current code from the editor and type "clear" command and Run to clean the canvas.
04:01 I already have a program in a text-editor.
04:05 I will explain the code now.
04:08 “reset” command sets Turtle to its default position.
04:12 canvassize 200,200 fixes the width and height of the canvas to 200 pixels each.
04:22 Value 1+1 is assigned to the variable $add.
04:26 Value 20-5 is assigned to the variable $subtract.
04:31 Value 15 * 2 is assigned to the variable $multiply.
04:36 30/30 is assigned to the variable $divide.
04:40 go 10,10 commands Turtle to go 10 pixels left of canvas and 10 pixels from top of canvas.
04:52 print command displays the variable on the canvas.
04:56 I will copy the code from text-editor and paste it into KTurtle editor.
05:03 Pause the tutorial here and type the program into your KTurtle editor.
05:08 Resume the tutorial after typing the program.
05:13 Let us click on Run button to run the program.
05:17 Command which is getting executed is highlighted on the editor.
05:22 Turtle displays the values on the canvas at the specified positions.
05:34 Let us consider a simple example for using comparison operator .
05:41 I will clear the current code from the editor. Type "clear" command and Run to clean the canvas.
05:49 I will zoom the program text to have a clear view.
05:53 Let's type:
05:55 $answer = 10 > 3
06:03 print $answer
06:09 Here, 10 is compared to 3 with the greater than operator.
06:14 The result of this comparison, the boolean value 'true', is stored in the
06:19 variable $answer and the value 'true' is displayed on the canvas.
06:27 Let's run the code now.
06:29 Turtle displays Boolean value 'true' on the canvas.
06:34 Now,let's see how Strings work in this application-
06:39 Strings can be put in variables like numbers.
06:43 Strings cannot be used in mathematical or comparison operators.
06:49 Strings are highlighted in red color.
06:53 'KTurtle' identifies a line in double quotes as a string.
07:00 I will clear the current code from editor. Type "clear" command and Run to clean the canvas.
07:08 Now, I will explain about Boolean values.
07:11 There are only two boolean values: "true" and "false".
07:16 For example, let's type the code:
07:20 $answer = 7<5
07:28 print $answer.
07:34 The Boolean value 'false' is assigned to the variable $answer because 7 is greater than 5.
07:43 Let's Run the code now.
07:47 Turtle displays Boolean value "false" on the canvas.
07:51 Let's next learn about “if-else” conditon.
07:56 ‘if’ condition is executed only if the boolean value evaluates ‘true’.
08:03 ‘else’ condition is executed only if the ‘if’ condition is ‘false’.
08:09 I will clear the current code from editor. Type "clear" command and Run to clean the canvas.
08:17 I already have a code in a text file.
08:21 This code compares numbers 4 , 5 and 6 and displays the results accordingly on the canvas.
08:30 I will copy the code from text-editor and paste it into KTurtle editor.
08:36 Pause the tutorial here and type the program into your KTurtle editor.
08:42 Resume the tutorial after typing the program.
08:46 Let's run the code now.
08:49 The Turtle has compared the values 4 and 5
08:53 and has displayed the result: "4 is smaller than 6" on the canvas.
09:00 With this we come to the end of this tutorial.
09:05 Let's summarize.
09:07 In this tutorial, we have learnt about:
09:11 Grammar of Turtle script and
09:14 ‘if-else’ condition.
09:17 Now, to the assignment part.
09:19 Solve an equation using:
09:22 if - else condition,
09:24 Mathematical and comparison operators.
09:27 Display the results using “print” and “go” commands.
09:33 To solve the assignment-
09:35 choose any four random numbers,
09:38 multiply two sets of random numbers,
09:42 compare the results using the comparison operators,
09:46 display both the results,
09:49 display greater result at the center of the canvas.
09:54 You can choose any equation which you like.
09:59 Watch the video available at this URL: http://spoken-tutorial.org/What_is_a_Spoken-Tutorial
10:03 It summarizes the Spoken Tutorial project.
10:06 If you do not have good bandwidth, you can download and watch it.
10:12 The Spoken Tutorial project team :
10:14 Conducts workshops using spoken tutorials.
10:18 Gives certificates to those who pass an online test.
10:22 For more details, please write to: contact@spoken-tutorial.org
10:30 Spoken Tutorial project is a part of the Talk to a Teacher project.
10:35 It is supported by the National Mission on Education through ICT, MHRD, Government of India.
10:43 More information on this mission is available at this link: http://spoken-tutorial.org/NMEICT-Intro
10:48 The Script is contributed by ITfC, Bangaluru.
10:52 This is Madhuri Ganpathi from IIT Bombay, signing off. Thank you for joining.

Contributors and Content Editors

Devraj, PoojaMoolya, Pratik kamble, Sandhya.np14, Sneha

Retrieved from "https://script.spoken-tutorial.org/index.php?title=KTurtle/C2/Grammar-of-TurtleScript/English-timed&oldid=34099"