Difference between revisions of "KTurtle/C3/Programming-Concepts/English-timed"
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|- | |- | ||
||00:12 | ||00:12 | ||
− | || | + | ||Write a program in 'KTurtle' |
|- | |- | ||
||00:15 | ||00:15 | ||
− | || | + | ||Use variables to store user input |
|- | |- | ||
||00:18 | ||00:18 | ||
− | || | + | ||Use '''"print" command''' to print on '''canvas''' |
|- | |- | ||
||00:22 | ||00:22 | ||
− | || | + | ||'''Comment''' a line. |
|- | |- | ||
|| 00:24 | || 00:24 | ||
||To record this tutorial, I am using: | ||To record this tutorial, I am using: | ||
− | + | '''Ubuntu Linux OS''' Version '''11.10''' | |
− | + | '''KTurtle''' version '''0.8.1 beta'''. | |
+ | |||
|- | |- | ||
||00:37 | ||00:37 | ||
Line 42: | Line 43: | ||
|- | |- | ||
||00:43 | ||00:43 | ||
− | ||If not, for relevant tutorials, please visit our website: http://spoken-tutorial.org | + | ||If not, for relevant tutorials, please visit our website: |
+ | http://spoken-tutorial.org | ||
+ | |||
|- | |- | ||
||00:49 | ||00:49 | ||
||Before proceeding, we will discuss some basic information about '''KTurtle'''. | ||Before proceeding, we will discuss some basic information about '''KTurtle'''. | ||
+ | |||
|- | |- | ||
||00:55 | ||00:55 | ||
− | || | + | ||Turtle displayed on the canvas is called "sprite". |
+ | |||
|- | |- | ||
||01:00 | ||01:00 | ||
− | ||"Sprite" is a small image that moves around the screen.e.g. | + | ||"Sprite" is a small image that moves around the screen. e.g. cursor is a sprite. |
+ | |||
|- | |- | ||
||01:10 | ||01:10 | ||
||"spritehide" command hides '''Turtle''' from canvas. | ||"spritehide" command hides '''Turtle''' from canvas. | ||
+ | |||
|- | |- | ||
||01:15 | ||01:15 | ||
− | ||"spriteshow" command shows '''Turtle''' if it is hidden. | + | ||"spriteshow" command shows '''Turtle''', if it is hidden. |
|- | |- | ||
||01:21 | ||01:21 | ||
||"clear" command cleans all drawings from canvas. | ||"clear" command cleans all drawings from canvas. | ||
+ | |||
|- | |- | ||
||01:27 | ||01:27 | ||
||In '''KTurtle''', | ||In '''KTurtle''', | ||
+ | |||
|- | |- | ||
||01:29 | ||01:29 | ||
− | ||"$ " sign is a container of variables. | + | ||"$" (Doller) sign is a container of variables. |
|- | |- | ||
||01:34 | ||01:34 | ||
− | ||"*"(asterisk) is used for multiplication of two numbers. | + | ||"*" (asterisk) is used for multiplication of two numbers. |
+ | |||
|- | |- | ||
||01:41 | ||01:41 | ||
− | ||"^"(caret) raises a power of the number. | + | ||"^" (caret) raises a power of the number. |
|- | |- | ||
||01:45 | ||01:45 | ||
− | ||"#"(hash) sign comments a line written after it. | + | ||"#" (hash) sign comments a line written after it. |
|- | |- | ||
||01:50 | ||01:50 | ||
||"sqrt" is an inbuilt function to find square root of a number. | ||"sqrt" is an inbuilt function to find square root of a number. | ||
+ | |||
|- | |- | ||
||01:58 | ||01:58 | ||
− | ||Let's open new '''KTurtle''' | + | ||Let's open new '''KTurtle Application'''. |
+ | |||
|- | |- | ||
||02:02 | ||02:02 | ||
Line 92: | Line 104: | ||
|- | |- | ||
||02:07 | ||02:07 | ||
− | ||''' | + | ||Under '''Type''', choose '''Education''' and '''KTurtle'''. |
+ | |||
|- | |- | ||
||02:13 | ||02:13 | ||
||'''KTurtle''' application opens. | ||'''KTurtle''' application opens. | ||
+ | |||
|- | |- | ||
||02:20 | ||02:20 | ||
− | ||We can also open | + | ||We can also open KTurtle using '''terminal'''. |
+ | |||
|- | |- | ||
||02:24 | ||02:24 | ||
− | ||Press ''' | + | ||Press '''Ctrl+Alt+T''' keys simultaneously to open the terminal. |
+ | |||
|- | |- | ||
||02:30 | ||02:30 | ||
− | ||Type ''' | + | ||Type '''kturtle''' and press '''Enter'''. 'KTurtle' Application opens. |
+ | |||
|- | |- | ||
||02:41 | ||02:41 | ||
||Let me type and explain the program code. | ||Let me type and explain the program code. | ||
+ | |||
|- | |- | ||
||02:46 | ||02:46 | ||
||Let me zoom into the program text, it may possibly be a little blurred. | ||Let me zoom into the program text, it may possibly be a little blurred. | ||
+ | |||
|- | |- | ||
||02:55 | ||02:55 | ||
− | ||'''#program to find square of a number'''. Press | + | ||'''#program to find square of a number'''. Press '''Enter'''. |
|- | |- | ||
||03:15 | ||03:15 | ||
||"#" sign comments a line written after it. | ||"#" sign comments a line written after it. | ||
+ | |||
|- | |- | ||
||03:19 | ||03:19 | ||
− | ||This means, this line will not be executed while running the program. Press | + | ||This means, this line will not be executed while running the program. Press '''Enter'''. |
|- | |- | ||
||03:29 | ||03:29 | ||
− | ||'''reset''' | + | ||'''reset''','''reset''' command sets '''Turtle''' to default position. Press '''Enter'''. |
− | |||
− | |||
− | |||
|- | |- | ||
||03:38 | ||03:38 | ||
− | ||'''$i= ask''' within double quotes | + | ||'''$i= ask''' within double quotes "enter a number for i and click OK". |
|- | |- | ||
||03:58 | ||03:58 | ||
||"$i" is a variable to store user input. | ||"$i" is a variable to store user input. | ||
+ | |||
|- | |- | ||
||04:03 | ||04:03 | ||
− | ||'''“ask”''' command asks for user input to be stored in variable. | + | ||'''“ask”''' command asks for user input to be stored in variable. Press '''Enter'''. |
+ | |||
|- | |- | ||
||04:11 | ||04:11 | ||
Line 145: | Line 164: | ||
|- | |- | ||
||04:17 | ||04:17 | ||
− | ||'''fontsize''' sets the font size used by print. | + | ||'''fontsize''' sets the font-size used by print. |
+ | |||
|- | |- | ||
||04:20 | ||04:20 | ||
− | || | + | ||'''fontsize''' takes number as input, set in pixels. |
+ | |||
|- | |- | ||
|04:27 | |04:27 | ||
Line 155: | Line 176: | ||
|- | |- | ||
||04:36 | ||04:36 | ||
− | ||'''print $i*$i''' calculates and prints square of a number. press | + | ||'''print $i*$i''' calculates and prints square of a number. press '''Enter'''. |
|- | |- | ||
Line 164: | Line 185: | ||
||04:48 | ||04:48 | ||
||'''spritehide''' hides '''Turtle''' from canvas. | ||'''spritehide''' hides '''Turtle''' from canvas. | ||
+ | |||
|- | |- | ||
||04:53 | ||04:53 | ||
− | ||Let us | + | ||Let us '''run''' the program now. |
+ | |||
|- | |- | ||
||04:56 | ||04:56 | ||
||Click on the '''Run''' button on the toolbar to start execution of the code in the editor. | ||Click on the '''Run''' button on the toolbar to start execution of the code in the editor. | ||
+ | |||
|- | |- | ||
||05:03 | ||05:03 | ||
||It shows a list of execution speeds. | ||It shows a list of execution speeds. | ||
+ | |||
|- | |- | ||
||05:07 | ||05:07 | ||
− | ||'''Full speed(no highlighting and inspector)''' | + | ||'''Full speed (no highlighting and inspector)''' |
+ | |||
|- | |- | ||
||05:10 | ||05:10 | ||
Line 183: | Line 209: | ||
'''slowest''' and | '''slowest''' and | ||
'''step-by-step'''. | '''step-by-step'''. | ||
+ | |||
|- | |- | ||
||05:17 | ||05:17 | ||
− | ||Let me run the code at ''' | + | ||Let me '''run''' the code at '''Slow''' speed. |
+ | |||
|- | |- | ||
||05:21 | ||05:21 | ||
− | ||An | + | ||An '''input bar''' appears. |
+ | |||
|- | |- | ||
||05:23 | ||05:23 | ||
− | || | + | ||Let's enter 15 for 'i' and click '''OK'''. |
+ | |||
|- | |- | ||
||05:29 | ||05:29 | ||
− | || | + | ||Square of '''15''' = '''225''' is displayed on the canvas. |
+ | |||
|- | |- | ||
||05:35 | ||05:35 | ||
||Let's now learn to find nth power of a number through a program. | ||Let's now learn to find nth power of a number through a program. | ||
+ | |||
|- | |- | ||
||05:42 | ||05:42 | ||
− | ||I already have program in a text editor. | + | ||I already have program in a text-editor. |
+ | |||
|- | |- | ||
− | |05:46 | + | ||05:46 |
||Let me copy the program from text editor and paste it into '''KTurtle''' editor. | ||Let me copy the program from text editor and paste it into '''KTurtle''' editor. | ||
Line 208: | Line 241: | ||
||05:56 | ||05:56 | ||
||Please pause the tutorial here and copy the program into your '''KTurtle''' editor. | ||Please pause the tutorial here and copy the program into your '''KTurtle''' editor. | ||
+ | |||
|- | |- | ||
− | || 06:03 | + | ||06:03 |
||Let me zoom into the program text. | ||Let me zoom into the program text. | ||
+ | |||
|- | |- | ||
||06:07 | ||06:07 | ||
||Explain the program. | ||Explain the program. | ||
+ | |||
|- | |- | ||
|06:09 | |06:09 | ||
||# sign comments a line written after it. | ||# sign comments a line written after it. | ||
+ | |||
|- | |- | ||
||06:13 | ||06:13 | ||
||'''reset''' command sets '''Turtle''' to '''default''' position. | ||'''reset''' command sets '''Turtle''' to '''default''' position. | ||
+ | |||
|- | |- | ||
||06:18 | ||06:18 | ||
||'''$i''' and '''$n''' are variables to store user input. | ||'''$i''' and '''$n''' are variables to store user input. | ||
+ | |||
|- | |- | ||
||06:25 | ||06:25 | ||
||'''“ask”''' command asks for user input to be stored in variables. | ||'''“ask”''' command asks for user input to be stored in variables. | ||
+ | |||
|- | |- | ||
||06:31 | ||06:31 | ||
− | ||'''fontsize 28''' sets the font size used by print. | + | ||'''fontsize 28''' sets the font-size used by print. |
+ | |||
|- | |- | ||
||06:37 | ||06:37 | ||
− | || | + | ||'''fontsize''' takes number as input, sets in pixels. |
+ | |||
|- | |- | ||
||06:43 | ||06:43 | ||
− | ||'''print ($i^$n)''' calculates & prints nth power of a number. | + | ||'''print ($i^$n)''' calculates & prints nth power of a number ($i). |
+ | |||
|- | |- | ||
||06:52 | ||06:52 | ||
||'''spritehide''' hides '''Turtle''' from canvas. | ||'''spritehide''' hides '''Turtle''' from canvas. | ||
+ | |||
|- | |- | ||
||06:57 | ||06:57 | ||
− | ||Let's | + | ||Let's '''run''' the program. |
|- | |- | ||
||07:00 | ||07:00 | ||
− | ||Let's enter | + | ||Let's enter 5 for 'i' and click '''OK''' |
+ | |||
|- | |- | ||
||07:05 | ||07:05 | ||
− | ||Let's enter | + | ||Let's enter 4 for 'n' and click OK. 5^4='''625''' is displayed on the canvas. |
+ | |||
|- | |- | ||
||07:18 | ||07:18 | ||
− | ||Next, let's use inbuilt | + | ||Next, let's use inbuilt “sqrt” function in a program to find square root of a number. |
+ | |||
|- | |- | ||
||07:27 | ||07:27 | ||
− | ||Let me copy the code from editor and paste it into | + | ||Let me copy the code from text-editor and paste it into KTurtle's editor. |
|- | |- | ||
Line 261: | Line 308: | ||
|- | |- | ||
||07:43 | ||07:43 | ||
− | ||Let me zoom the program text it may possibly be a little blurred. | + | ||Let me zoom the program text, it may possibly be a little blurred. |
+ | |||
|- | |- | ||
||07:49 | ||07:49 | ||
− | ||Let me explain the code. | + | ||Let me explain the code now. |
|- | |- | ||
− | || 07:52 | + | ||07:52 |
− | ||# sign comments a line written after it . | + | ||'#' hyash sign comments a line written after it. |
+ | |||
|- | |- | ||
||07:57 | ||07:57 | ||
||'''reset''' command sets '''Turtle''' to '''default''' position. | ||'''reset''' command sets '''Turtle''' to '''default''' position. | ||
+ | |||
|- | |- | ||
||08:02 | ||08:02 | ||
||'''$i''' is a variable to store user input. | ||'''$i''' is a variable to store user input. | ||
+ | |||
|- | |- | ||
||08:07 | ||08:07 | ||
− | ||'''fontsize 28''' sets the font size used by print. | + | ||'''fontsize 28''' sets the font-size used by '''print'''. |
+ | |||
|- | |- | ||
||08:12 | ||08:12 | ||
||'''print sqrt $i''' prints square root of a number. | ||'''print sqrt $i''' prints square root of a number. | ||
+ | |||
|- | |- | ||
||08:19 | ||08:19 | ||
||'''spritehide''' hides '''Turtle''' from canvas. | ||'''spritehide''' hides '''Turtle''' from canvas. | ||
+ | |||
|- | |- | ||
||08:24 | ||08:24 | ||
− | ||Let me run the program now. | + | ||Let me '''run''' the program now. |
+ | |||
|- | |- | ||
||08:28 | ||08:28 | ||
− | ||Let's enter '169' for i | + | ||Let's enter '''169''' for 'i' and click '''OK'''. |
+ | |||
|- | |- | ||
||08:34 | ||08:34 | ||
− | || | + | ||Square root of 169 = '''13''' is displayed on canvas. |
|- | |- | ||
||08:39 | ||08:39 | ||
− | ||Let's run again | + | ||Let's '''run''' again. |
+ | |||
|- | |- | ||
||08:42 | ||08:42 | ||
− | || | + | ||Let's enter '''-169''' for 'i' and click '''OK'''. |
+ | |||
|- | |- | ||
||08:49 | ||08:49 | ||
− | ||If we enter negative number, output is | + | ||If we enter a negative number, output is "nan". It means "not a number" |
+ | |||
|- | |- | ||
||08:56 | ||08:56 | ||
− | || | + | ||as square root of a negative number is not a real number. |
+ | |||
|- | |- | ||
||09:02 | ||09:02 | ||
− | || | + | ||Let's next evaluate cube-root of a positive number through a program. |
+ | |||
|- | |- | ||
||09:08 | ||09:08 | ||
− | ||Let me copy the program from editor and paste it into | + | ||Let me copy the program from text-editor and paste it into KTurtle's editor. |
|- | |- | ||
||09:19 | ||09:19 | ||
||Please pause the tutorial here and copy the program into your '''KTurtle''' editor. | ||Please pause the tutorial here and copy the program into your '''KTurtle''' editor. | ||
+ | |||
|- | |- | ||
||09:25 | ||09:25 | ||
− | ||Let me zoom into the program text it may possibly be a little blurred. | + | ||Let me zoom into the program text, it may possibly be a little blurred. |
+ | |||
|- | |- | ||
||09:31 | ||09:31 | ||
||Let me explain the program. | ||Let me explain the program. | ||
+ | |||
|- | |- | ||
||09:35 | ||09:35 | ||
− | ||# | + | ||'#' hyash sign comments a line written after it. |
+ | |||
|- | |- | ||
||09:38 | ||09:38 | ||
− | ||Please note this is a single line comment. | + | ||Please note, this is a '''single line comment'''. |
+ | |||
|- | |- | ||
||09:42 | ||09:42 | ||
− | ||Every comment must be preceded by a # sign. | + | ||Every comment must be preceded by a '#' sign. |
+ | |||
|- | |- | ||
||09:48 | ||09:48 | ||
||'''reset''' command sets the '''Turtle''' to '''default''' position. | ||'''reset''' command sets the '''Turtle''' to '''default''' position. | ||
+ | |||
|- | |- | ||
||09:53 | ||09:53 | ||
||'''$i''' and '''$C''' are variables to store user input. | ||'''$i''' and '''$C''' are variables to store user input. | ||
+ | |||
|- | |- | ||
||09:59 | ||09:59 | ||
− | ||'''$C=($i)^(1/3)''' calculates cube root of a number. | + | ||'''$C=($i)^(1/3)''', calculates cube-root of a number. |
+ | |||
|- | |- | ||
||10:07 | ||10:07 | ||
− | ||'''fontsize 28''' sets the font size used by print. | + | ||'''fontsize 28''' sets the font-size used by print. |
+ | |||
|- | |- | ||
||10:13 | ||10:13 | ||
− | ||'''print $C''' prints cube root of a number. | + | ||'''print $C''' prints cube-root of a number. |
+ | |||
|- | |- | ||
||10:19 | ||10:19 | ||
||'''spritehide''' hides '''Turtle''' from canvas. | ||'''spritehide''' hides '''Turtle''' from canvas. | ||
+ | |||
|- | |- | ||
||10:23 | ||10:23 | ||
− | ||Let's | + | ||Let's '''run''' the program. |
|- | |- | ||
||10:27 | ||10:27 | ||
− | ||Let's enter 343 for i and click OK | + | ||Let's enter '''343''' for 'i' and click '''OK'''. |
+ | |||
|- | |- | ||
||10:34 | ||10:34 | ||
− | || | + | ||Cube root of 343 = '''7''' is displayed on the canvas. |
|- | |- | ||
||10:40 | ||10:40 | ||
− | ||With this we come to the end of this tutorial. | + | ||With this, we come to the end of this tutorial. |
+ | |||
|- | |- | ||
||10:43 | ||10:43 | ||
− | || | + | ||Let us summarize. |
|- | |- | ||
||10:46 | ||10:46 | ||
− | ||In this tutorial, we have learnt | + | ||In this tutorial, we have learnt: |
+ | |||
|- | |- | ||
||10:49 | ||10:49 | ||
Line 374: | Line 450: | ||
|- | |- | ||
||10:52 | ||10:52 | ||
− | || Use of sqrt function | + | ||Use of "sqrt" function |
|- | |- | ||
||10:55 | ||10:55 | ||
− | || Use of print command | + | ||Use of "print" command |
|- | |- | ||
||10:57 | ||10:57 | ||
||Using KTurtle editor and canvas. | ||Using KTurtle editor and canvas. | ||
+ | |||
|- | |- | ||
||11:02 | ||11:02 | ||
− | ||As an assignment, I would like you to use basic programming commands to find | + | ||As an assignment, I would like you to use basic programming commands to find: |
+ | |||
|- | |- | ||
||11:08 | ||11:08 | ||
Line 392: | Line 470: | ||
|- | |- | ||
||11:11 | ||11:11 | ||
− | || nth root of a number | + | ||nth root of a number. |
+ | |||
|- | |- | ||
||11:15 | ||11:15 | ||
− | ||Watch the video available at | + | ||Watch the video available at this URL: |
+ | http://spoken-tutorial.org/What_is_a_Spoken-Tutorial | ||
|- | |- | ||
||11:19 | ||11:19 | ||
− | ||It | + | ||It summarizes the Spoken Tutorial project. |
|- | |- | ||
||11:22 | ||11:22 | ||
− | ||If you do not have good bandwidth, you can download and watch it | + | ||If you do not have good bandwidth, you can download and watch it. |
+ | |||
|- | |- | ||
||11:27 | ||11:27 | ||
− | ||The Spoken Tutorial Project | + | ||The Spoken Tutorial Project team: |
|- | |- | ||
||11:29 | ||11:29 | ||
− | ||Conducts workshops using spoken tutorials | + | ||Conducts workshops using spoken tutorials. |
|- | |- | ||
||11:32 | ||11:32 | ||
− | ||Gives certificates to those who pass an online test | + | ||Gives certificates to those who pass an online test. |
|- | |- | ||
||11:35 | ||11:35 | ||
− | ||For more details, please write to contact@spoken-tutorial.org | + | ||For more details, please write to: |
+ | contact@spoken-tutorial.org | ||
+ | |||
|- | |- | ||
||11:44 | ||11:44 | ||
− | ||Spoken Tutorial | + | ||'''Spoken Tutorial''' project is a part of the '''Talk to a Teacher''' project. |
|- | |- | ||
||11:48 | ||11:48 | ||
||It is supported by the National Mission on Education through ICT, MHRD, Government of India. | ||It is supported by the National Mission on Education through ICT, MHRD, Government of India. | ||
+ | |||
|- | |- | ||
||11:55 | ||11:55 | ||
− | ||More information on this | + | ||More information on this mission is available at this link: |
+ | http://spoken-tutorial.org/NMEICT-Intro | ||
|- | |- | ||
||11:59 | ||11:59 | ||
− | ||This is Madhuri Ganpathi | + | ||This is Madhuri Ganpathi from '''IIT Bombay''', signing off. Thank you for joining. |
|- | |- |
Latest revision as of 17:44, 24 March 2017
Time | Narration |
00:01 | Hello Everybody. |
00:03 | Welcome to this tutorial on Programming concepts in KTurtle. |
00:08 | In this tutorial, we will learn how to: |
00:12 | Write a program in 'KTurtle' |
00:15 | Use variables to store user input |
00:18 | Use "print" command to print on canvas |
00:22 | Comment a line. |
00:24 | To record this tutorial, I am using:
Ubuntu Linux OS Version 11.10 KTurtle version 0.8.1 beta. |
00:37 | We assume that you have basic working knowledge of KTurtle. |
00:43 | If not, for relevant tutorials, please visit our website: |
00:49 | Before proceeding, we will discuss some basic information about KTurtle. |
00:55 | Turtle displayed on the canvas is called "sprite". |
01:00 | "Sprite" is a small image that moves around the screen. e.g. cursor is a sprite. |
01:10 | "spritehide" command hides Turtle from canvas. |
01:15 | "spriteshow" command shows Turtle, if it is hidden. |
01:21 | "clear" command cleans all drawings from canvas. |
01:27 | In KTurtle, |
01:29 | "$" (Doller) sign is a container of variables. |
01:34 | "*" (asterisk) is used for multiplication of two numbers. |
01:41 | "^" (caret) raises a power of the number. |
01:45 | "#" (hash) sign comments a line written after it. |
01:50 | "sqrt" is an inbuilt function to find square root of a number. |
01:58 | Let's open new KTurtle Application. |
02:02 | Click on Dash home >> Media Apps. |
02:07 | Under Type, choose Education and KTurtle. |
02:13 | KTurtle application opens. |
02:20 | We can also open KTurtle using terminal. |
02:24 | Press Ctrl+Alt+T keys simultaneously to open the terminal. |
02:30 | Type kturtle and press Enter. 'KTurtle' Application opens. |
02:41 | Let me type and explain the program code. |
02:46 | Let me zoom into the program text, it may possibly be a little blurred. |
02:55 | #program to find square of a number. Press Enter. |
03:15 | "#" sign comments a line written after it. |
03:19 | This means, this line will not be executed while running the program. Press Enter. |
03:29 | reset,reset command sets Turtle to default position. Press Enter. |
03:38 | $i= ask within double quotes "enter a number for i and click OK". |
03:58 | "$i" is a variable to store user input. |
04:03 | “ask” command asks for user input to be stored in variable. Press Enter. |
04:11 | “fontsize” space 28. |
04:17 | fontsize sets the font-size used by print. |
04:20 | fontsize takes number as input, set in pixels. |
04:27 | print $i*$i |
04:36 | print $i*$i calculates and prints square of a number. press Enter. |
04:45 | spritehide |
04:48 | spritehide hides Turtle from canvas. |
04:53 | Let us run the program now. |
04:56 | Click on the Run button on the toolbar to start execution of the code in the editor. |
05:03 | It shows a list of execution speeds. |
05:07 | Full speed (no highlighting and inspector) |
05:10 | Full speed,
slow, slower, slowest and step-by-step. |
05:17 | Let me run the code at Slow speed. |
05:21 | An input bar appears. |
05:23 | Let's enter 15 for 'i' and click OK. |
05:29 | Square of 15 = 225 is displayed on the canvas. |
05:35 | Let's now learn to find nth power of a number through a program. |
05:42 | I already have program in a text-editor. |
05:46 | Let me copy the program from text editor and paste it into KTurtle editor. |
05:56 | Please pause the tutorial here and copy the program into your KTurtle editor. |
06:03 | Let me zoom into the program text. |
06:07 | Explain the program. |
06:09 | # sign comments a line written after it. |
06:13 | reset command sets Turtle to default position. |
06:18 | $i and $n are variables to store user input. |
06:25 | “ask” command asks for user input to be stored in variables. |
06:31 | fontsize 28 sets the font-size used by print. |
06:37 | fontsize takes number as input, sets in pixels. |
06:43 | print ($i^$n) calculates & prints nth power of a number ($i). |
06:52 | spritehide hides Turtle from canvas. |
06:57 | Let's run the program. |
07:00 | Let's enter 5 for 'i' and click OK |
07:05 | Let's enter 4 for 'n' and click OK. 5^4=625 is displayed on the canvas. |
07:18 | Next, let's use inbuilt “sqrt” function in a program to find square root of a number. |
07:27 | Let me copy the code from text-editor and paste it into KTurtle's editor. |
07:35 | Please pause the tutorial here and copy the program into your KTurtle editor. |
07:43 | Let me zoom the program text, it may possibly be a little blurred. |
07:49 | Let me explain the code now. |
07:52 | '#' hyash sign comments a line written after it. |
07:57 | reset command sets Turtle to default position. |
08:02 | $i is a variable to store user input. |
08:07 | fontsize 28 sets the font-size used by print. |
08:12 | print sqrt $i prints square root of a number. |
08:19 | spritehide hides Turtle from canvas. |
08:24 | Let me run the program now. |
08:28 | Let's enter 169 for 'i' and click OK. |
08:34 | Square root of 169 = 13 is displayed on canvas. |
08:39 | Let's run again. |
08:42 | Let's enter -169 for 'i' and click OK. |
08:49 | If we enter a negative number, output is "nan". It means "not a number" |
08:56 | as square root of a negative number is not a real number. |
09:02 | Let's next evaluate cube-root of a positive number through a program. |
09:08 | Let me copy the program from text-editor and paste it into KTurtle's editor. |
09:19 | Please pause the tutorial here and copy the program into your KTurtle editor. |
09:25 | Let me zoom into the program text, it may possibly be a little blurred. |
09:31 | Let me explain the program. |
09:35 | '#' hyash sign comments a line written after it. |
09:38 | Please note, this is a single line comment. |
09:42 | Every comment must be preceded by a '#' sign. |
09:48 | reset command sets the Turtle to default position. |
09:53 | $i and $C are variables to store user input. |
09:59 | $C=($i)^(1/3), calculates cube-root of a number. |
10:07 | fontsize 28 sets the font-size used by print. |
10:13 | print $C prints cube-root of a number. |
10:19 | spritehide hides Turtle from canvas. |
10:23 | Let's run the program. |
10:27 | Let's enter 343 for 'i' and click OK. |
10:34 | Cube root of 343 = 7 is displayed on the canvas. |
10:40 | With this, we come to the end of this tutorial. |
10:43 | Let us summarize. |
10:46 | In this tutorial, we have learnt: |
10:49 | Programming concepts |
10:52 | Use of "sqrt" function |
10:55 | Use of "print" command |
10:57 | Using KTurtle editor and canvas. |
11:02 | As an assignment, I would like you to use basic programming commands to find: |
11:08 | Cube of a number |
11:11 | nth root of a number. |
11:15 | Watch the video available at this URL: |
11:19 | It summarizes the Spoken Tutorial project. |
11:22 | If you do not have good bandwidth, you can download and watch it. |
11:27 | The Spoken Tutorial Project team: |
11:29 | Conducts workshops using spoken tutorials. |
11:32 | Gives certificates to those who pass an online test. |
11:35 | For more details, please write to:
contact@spoken-tutorial.org |
11:44 | Spoken Tutorial project is a part of the Talk to a Teacher project. |
11:48 | It is supported by the National Mission on Education through ICT, MHRD, Government of India. |
11:55 | More information on this mission is available at this link: |
11:59 | This is Madhuri Ganpathi from IIT Bombay, signing off. Thank you for joining. |
Contributors and Content Editors
Kaushik Datta, Madhurig, PoojaMoolya, Pratik kamble, Sandhya.np14, Sneha