Difference between revisions of "PhET-Simulations-for-Mathematics/C2/Number-Line---Distance/English"
RadhikaYadav (Talk | contribs) (Created page with "Title: Number Line: Distance Keywords: PhET simulation, number line, integers, subtraction, variables, absolute value, directed distance, spoken tutorial, video tutorial. {|...") |
Nancyvarkey (Talk | contribs) |
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'''Title Slide''' | '''Title Slide''' | ||
||Welcome to this '''Spoken Tutorial''' on '''Number Line: Distance'''. | ||Welcome to this '''Spoken Tutorial''' on '''Number Line: Distance'''. | ||
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|- | |- | ||
Line 20: | Line 19: | ||
||In this tutorial, we will learn how to: | ||In this tutorial, we will learn how to: | ||
− | * Represent integers on the number line | + | * Represent integers on the '''number line''' |
* Subtract integers | * Subtract integers | ||
* Calculate the distance between two integers | * Calculate the distance between two integers | ||
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− | |||
|- | |- | ||
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||This tutorial is recorded using, | ||This tutorial is recorded using, | ||
− | * macOS Catalina version 10.15.7 | + | * '''macOS Catalina''' version 10.15.7 |
− | + | ||
− | + | ||
− | + | ||
+ | * '''Google Chrome''' version 101.0.49 | ||
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'''https://spoken-tutorial.org''' | '''https://spoken-tutorial.org''' | ||
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||To follow this tutorial, | ||To follow this tutorial, | ||
− | Learners should be familiar with topics in basic Mathematics. | + | *Learners should be familiar with topics in basic Mathematics. |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
+ | *Please use the link below to access the tutorials on '''PhET simulations'''. | ||
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Line 66: | Line 56: | ||
'''https://phet.colorado.edu/en/simulations/number-line-distance''' | '''https://phet.colorado.edu/en/simulations/number-line-distance''' | ||
− | ||Please use the given link to download the '''PhET | + | ||Please use the given link to download the '''PhET simulation'''. |
|- | |- | ||
||'''Slide Number 6''' | ||'''Slide Number 6''' | ||
Line 72: | Line 62: | ||
'''PhET simulations''' | '''PhET simulations''' | ||
− | + | ||In this tutorial, we will use the '''Number Line: Distance PhET simulation'''. | |
− | + | ||
− | ||In this tutorial, we will use the '''Number Line: Distance | + | |
|- | |- | ||
Line 81: | Line 69: | ||
'''Number Line: Distance simulation''' | '''Number Line: Distance simulation''' | ||
+ | ||I have already downloaded the '''simulation''' to my '''Downloads''' folder. | ||
− | |||
− | |||
|- | |- | ||
||Double click on the '''number-line-distance_en.html''' file | ||Double click on the '''number-line-distance_en.html''' file | ||
Line 89: | Line 76: | ||
− | The file will open in your default browser. | + | The file will open in your default '''browser'''. |
− | + | ||
− | + | ||
|- | |- | ||
Line 98: | Line 83: | ||
|- | |- | ||
||Point to each screen | ||Point to each screen | ||
− | ||The interface has two screens | + | ||The interface has two screens - '''Explore''' and '''Generic'''. |
− | + | ||
− | '''Explore''' and '''Generic'''. | + | |
− | + | ||
− | + | ||
|- | |- | ||
||Click on '''Explore''' screen | ||Click on '''Explore''' screen | ||
||Click on the '''Explore''' screen. | ||Click on the '''Explore''' screen. | ||
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|- | |- | ||
||Point to the number line | ||Point to the number line | ||
||The screen has a '''number line WE'''. | ||The screen has a '''number line WE'''. | ||
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It is used to represent numbers at equal intervals and perform operations. | It is used to represent numbers at equal intervals and perform operations. | ||
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− | |||
|- | |- | ||
||Point to the top left corner. | ||Point to the top left corner. | ||
||On the top left corner, there are two options. | ||On the top left corner, there are two options. | ||
− | |||
We can switch between them. | We can switch between them. | ||
Line 127: | Line 103: | ||
'''Absolute Value''' radio button is selected by default. | '''Absolute Value''' radio button is selected by default. | ||
− | |||
− | |||
|- | |- | ||
||Point to the '''Absolute Value''' radio button | ||Point to the '''Absolute Value''' radio button | ||
||'''Absolute Value ''' is the magnitude of a number without regard to its sign. | ||'''Absolute Value ''' is the magnitude of a number without regard to its sign. | ||
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− | |||
|- | |- | ||
Line 141: | Line 113: | ||
Select '''Absolute Value''' radio button. | Select '''Absolute Value''' radio button. | ||
− | ||'''Directed Distance''' | + | ||'''Directed Distance''' shows the difference between two numbers along with the sign. |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
|- | |- | ||
||Point to the bottom left corner swap button | ||Point to the bottom left corner swap button | ||
− | ||At the bottom, we have two variables represented as '''x1''' and '''x2'''. | + | ||At the bottom, we have two '''variables''' represented as '''x1''' and '''x2'''. |
We can swap them using the swapping arrow button. | We can swap them using the swapping arrow button. | ||
− | |||
− | |||
|- | |- | ||
||Point to the '''Objects''' box. | ||Point to the '''Objects''' box. | ||
||We can drag and place the objects from the''' Objects '''box on the number line. | ||We can drag and place the objects from the''' Objects '''box on the number line. | ||
+ | |||
|- | |- | ||
||Point to the different scenarios. | ||Point to the different scenarios. | ||
||We can view this '''simulation''' in different scenarios. | ||We can view this '''simulation''' in different scenarios. | ||
− | + | #The first one is the distance between a house and a person. | |
− | The first one is the distance between a house and a person. | + | #The second is the temperature difference between two climates. |
− | + | #The last is the vertical distance between a fish and a bird. | |
− | The second is the temperature difference between two climates. | + | |
− | + | ||
− | The last is the vertical distance between a fish and a bird. | + | |
− | + | ||
− | + | ||
|- | |- | ||
Line 178: | Line 140: | ||
− | ||On the top right we have | + | ||On the top right we have: |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
+ | #'''Point Labels''' | ||
+ | #'''Distance Labels''' | ||
+ | #'''Distance Description '''and''' ''' | ||
+ | #'''Tick Marks''' checkboxes. | ||
+ | We can use these checkboxes to show and hide the details. | ||
|- | |- | ||
||Point to the '''Distance Statement '''on the top center of the screen | ||Point to the '''Distance Statement '''on the top center of the screen | ||
− | ||At the top | + | ||At the top is the '''distance statement'''. |
− | + | ||
It can be minimised. | It can be minimised. | ||
+ | |||
We can again maximise it when required. | We can again maximise it when required. | ||
Line 206: | Line 162: | ||
|- | |- | ||
− | ||Point to the '''number line'''. | + | ||Point to the right of the '''number line'''. |
− | ||From the origin, positive numbers are represented on the right of the number line. | + | |
+ | Point to the left of the '''number line'''. | ||
+ | ||From the origin, positive numbers are represented on the right of the '''number line'''. | ||
Line 216: | Line 174: | ||
|- | |- | ||
||Point to the '''Objects''' box. | ||Point to the '''Objects''' box. | ||
− | ||Let us put the house and the person on the number line. | + | ||Let us put the house and the person on the '''number line.''' |
Line 223: | Line 181: | ||
Let us use the following values for demonstration. | Let us use the following values for demonstration. | ||
− | + | |- | |
+ | ||Point to the '''House''' >> then to the '''number line''' | ||
+ | ||The house is represented by '''variable x1''' whose value is -4. | ||
|- | |- | ||
− | ||Point to the ''' | + | ||Point to the '''Person''' >> then to the '''number line''' |
− | ||The | + | ||The person is represented by '''variable x2''' whose value is 5. |
− | |||
− | |||
− | |||
− | |||
|- | |- | ||
||Point to the '''Distance Statement'''. | ||Point to the '''Distance Statement'''. | ||
Line 243: | Line 199: | ||
Select '''Absolute Value ''' radio button. | Select '''Absolute Value ''' radio button. | ||
− | |||
− | |||
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||'''Directed distance''' also remains the same. | ||'''Directed distance''' also remains the same. | ||
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|- | |- | ||
Line 260: | Line 211: | ||
||Drag the '''Person ''' towards right on the number line. | ||Drag the '''Person ''' towards right on the number line. | ||
||If the person moves to the right, the distance increases. | ||If the person moves to the right, the distance increases. | ||
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|- | |- | ||
Line 268: | Line 218: | ||
|- | |- | ||
||Point to the '''Distance Statement''' | ||Point to the '''Distance Statement''' | ||
− | ||The difference between '''x2''' and '''x1''' | + | ||The difference between '''x2''' and '''x1''' also changes simultaneously. |
− | + | ||
− | + | ||
− | + | ||
+ | Hence, distance between two integers is the '''absolute value''' of their difference. | ||
|- | |- | ||
||Point to the bottom left swap button | ||Point to the bottom left swap button | ||
− | + | ||If we swap the '''variables x1''' and '''x2''', the '''absolute value''' remains the same. | |
− | + | ||
− | ||If we swap the | + | |
− | + | ||
− | + | ||
|- | |- | ||
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'''x2-x1''' is (-4-3) which is equal to -7. | '''x2-x1''' is (-4-3) which is equal to -7. | ||
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|- | |- | ||
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|- | |- | ||
||Point to the number line | ||Point to the number line | ||
− | ||On the number line, the person that is | + | ||On the number line, the person that is''' variable x1''' is the reference point. |
The arrowhead points west in the direction of the house. | The arrowhead points west in the direction of the house. | ||
− | |||
− | |||
|- | |- | ||
||Point to the bottom left swap button | ||Point to the bottom left swap button | ||
− | ||If we swap the variables again, the directed distance is 3-(-4) which is 7. | + | ||If we swap the '''variables''' again, the directed distance is 3-(-4) which is 7. |
Line 314: | Line 254: | ||
− | The person is 7 metres | + | The person is 7 metres east of the house. |
− | + | ||
− | + | ||
|- | |- | ||
Line 340: | Line 278: | ||
It is the difference of their distance from the sea level. | It is the difference of their distance from the sea level. | ||
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We can place these objects wherever we want on the number line. | We can place these objects wherever we want on the number line. | ||
− | |||
− | |||
|- | |- | ||
||Point to the '''Bird'''. | ||Point to the '''Bird'''. | ||
− | ||The bird is represented by the | + | ||The bird is represented by the '''variable y1''' whose value is -2. |
− | + | ||
− | + | ||
|- | |- | ||
||Point to the '''House''' | ||Point to the '''House''' | ||
− | ||The fish is represented by the | + | ||The fish is represented by the '''variable y2''' whose value is -13. |
|- | |- | ||
||Point to the '''Distance Statement''' | ||Point to the '''Distance Statement''' | ||
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Hence, they have a vertical distance of 11 meters. | Hence, they have a vertical distance of 11 meters. | ||
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The '''Generic''' screen has some new tools. | The '''Generic''' screen has some new tools. | ||
− | |||
− | |||
|- | |- | ||
||Point to the '''Scale'''. | ||Point to the '''Scale'''. | ||
− | ||From this list | + | ||From this list we can select the '''scale''' of the '''number line'''. |
-10 to 10 is chosen by default. | -10 to 10 is chosen by default. | ||
− | |||
− | |||
|- | |- | ||
||Point to the number line representations. | ||Point to the number line representations. | ||
− | ||We can choose between a '''horizontal''' or '''vertical '''representation of the number line. | + | ||We can choose between a '''horizontal''' or '''vertical '''representation of the '''number line'''. |
Line 404: | Line 331: | ||
We can use the '''Generic''' screen to generalise and understand these concepts. | We can use the '''Generic''' screen to generalise and understand these concepts. | ||
− | |||
|- | |- | ||
||Point to the '''colored balls'''. | ||Point to the '''colored balls'''. | ||
− | ||Let us put the colored balls on the number line. | + | ||Let us put the colored balls on the '''number line'''. |
− | + | ||
|- | |- | ||
||Point to the number line | ||Point to the number line | ||
− | ||The | + | ||The '''variable x1''' represents the pink ball. |
− | + | ||
− | + | ||
− | + | ||
+ | The''' variable x2''' represents the blue ball. | ||
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x2-x1 is 2-(-4) which is equal to 6. | x2-x1 is 2-(-4) which is equal to 6. | ||
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− | |||
|- | |- | ||
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||Select the '''directed distance''' option. | ||Select the '''directed distance''' option. | ||
− | Here the ''' | + | Here the '''distance description''' tells us that '''x2''' is 6 units more positive than '''x1'''. |
− | + | ||
− | + | ||
|- | |- | ||
Line 450: | Line 369: | ||
|- | |- | ||
||Point to the bottom left swap button | ||Point to the bottom left swap button | ||
− | ||If we swap the variables, the arrowhead points towards the left. | + | ||If we swap the '''variables''', the arrowhead points towards the left. |
− | + | ||
− | + | ||
|- | |- | ||
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|- | |- | ||
||Point to the bottom left swap button | ||Point to the bottom left swap button | ||
− | ||Let us swap the variables once again. | + | ||Let us swap the '''variables''' once again. |
|- | |- | ||
||Point to the '''Distance Statement''' | ||Point to the '''Distance Statement''' | ||
− | ||Let us change the variable | + | ||Let us change the '''variable''' using the buttons in the '''distance statement'''. |
− | The position of the colored balls on the number line changes accordingly. | + | The position of the colored balls on the '''number line''' changes accordingly. |
|- | |- | ||
||Point to the number line | ||Point to the number line | ||
− | ||Hence, the absolute value of the difference between two integers is their distance. | + | ||Hence, the '''absolute value''' of the difference between two integers is their distance. |
− | + | ||
− | + | ||
|- | |- | ||
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||In this tutorial, we have learnt how to: | ||In this tutorial, we have learnt how to: | ||
− | Represent integers on the number line | + | *Represent integers on the '''number line''' |
− | Subtract integers | + | *Subtract integers |
− | Calculate the distance between two integers | + | *Calculate the distance between two integers |
|- | |- | ||
||'''Slide number 8''' | ||'''Slide number 8''' | ||
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||As an assignment, | ||As an assignment, | ||
+ | *Open the second scenario in the '''Explore''' screen. | ||
− | + | *Find the average temperature of winter and summer months in your city. | |
− | + | ||
− | + | ||
− | Find the average temperature of winter and summer months in your city | + | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
+ | *Represent them on the number line and calculate the difference between them. | ||
+ | *Find out how this has changed over the years. | ||
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Please download and watch it. | Please download and watch it. | ||
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* For more details, please write to us. | * For more details, please write to us. | ||
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Line 541: | Line 446: | ||
* Please visit this site. | * Please visit this site. | ||
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* Choose the minute and second where you have the question. | * Choose the minute and second where you have the question. | ||
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* Explain your questions briefly. | * Explain your questions briefly. | ||
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* The Spoken tutorial project will ensure an answer. | * The Spoken tutorial project will ensure an answer. | ||
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* You will have to register to ask questions. | * You will have to register to ask questions. | ||
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'''Acknowledgement''' | '''Acknowledgement''' | ||
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||The Spoken Tutorial project is funded by the Ministry of Education, Government of India. | ||The Spoken Tutorial project is funded by the Ministry of Education, Government of India. | ||
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Line 575: | Line 469: | ||
Thanks for joining. | Thanks for joining. | ||
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|} | |} |
Revision as of 17:18, 15 December 2022
Title: Number Line: Distance
Keywords: PhET simulation, number line, integers, subtraction, variables, absolute value, directed distance, spoken tutorial, video tutorial.
Visual Cue | Narration |
Slide Number 1
Title Slide |
Welcome to this Spoken Tutorial on Number Line: Distance. |
Slide Number 2
Learning Objectives |
In this tutorial, we will learn how to:
|
Slide Number 3
System Requirements |
This tutorial is recorded using,
|
Slide Number 4
Pre-requisites |
To follow this tutorial,
|
Slide Number 5
Link for PhET simulation
|
Please use the given link to download the PhET simulation. |
Slide Number 6
PhET simulations |
In this tutorial, we will use the Number Line: Distance PhET simulation. |
Point to the simulation in the Downloads folder.
|
I have already downloaded the simulation to my Downloads folder. |
Double click on the number-line-distance_en.html file | To open the simulation, double click on the number-line-distance_en.html file.
|
Point to the simulation interface | This is the interface of the Number Line: Distance simulation. |
Point to each screen | The interface has two screens - Explore and Generic. |
Click on Explore screen | Click on the Explore screen. |
Point to the number line | The screen has a number line WE.
It is used to represent numbers at equal intervals and perform operations. |
Point to the top left corner. | On the top left corner, there are two options.
We can switch between them.
|
Point to the Absolute Value radio button | Absolute Value is the magnitude of a number without regard to its sign. |
Select Directed Distance radio button.
|
Directed Distance shows the difference between two numbers along with the sign. |
Point to the bottom left corner swap button | At the bottom, we have two variables represented as x1 and x2.
We can swap them using the swapping arrow button. |
Point to the Objects box. | We can drag and place the objects from the Objects box on the number line. |
Point to the different scenarios. | We can view this simulation in different scenarios.
|
Point to the information checkboxes.
Point Labels, Distance Labels, Distance Description, and Tick Marks.
|
On the top right we have:
We can use these checkboxes to show and hide the details. |
Point to the Distance Statement on the top center of the screen | At the top is the distance statement.
It can be minimised.
|
Point to the reset button | The reset button takes us back to the starting point. |
Point to the right of the number line.
Point to the left of the number line. |
From the origin, positive numbers are represented on the right of the number line.
|
Point to the Objects box. | Let us put the house and the person on the number line.
Let us use the following values for demonstration. |
Point to the House >> then to the number line | The house is represented by variable x1 whose value is -4. |
Point to the Person >> then to the number line | The person is represented by variable x2 whose value is 5. |
Point to the Distance Statement. | The absolute difference between x2 and x1 is x2-x1.
5-(-4) which is equal to 9. |
Select Directed Distance radio button.
|
Directed distance also remains the same. |
Point to the Distance Description. | See the distance description.
|
Drag the Person towards right on the number line. | If the person moves to the right, the distance increases. |
Drag the Person towards left on the number line. | If the person moves to the left, the distance decreases. |
Point to the Distance Statement | The difference between x2 and x1 also changes simultaneously.
|
Point to the bottom left swap button | If we swap the variables x1 and x2, the absolute value remains the same. |
Select Directed Distance radio button | However, the directed distance is now -7.
|
Point to the Distance Description. | The distance description tells us the house is 7 metres west of the person. |
Point to the number line | On the number line, the person that is variable x1 is the reference point.
|
Point to the bottom left swap button | If we swap the variables again, the directed distance is 3-(-4) which is 7.
|
Click on the third scenario | Let us select the third scenario. |
Point to the number line
|
Here we have a vertical number line.
|
Point to the Objects box | Let us place the bird in the sky and the fish in the water. |
Point to the number line | The vertical distance between them is calculated.
|
Drag the Bird inside the water to catch the Fish. | Let us drag the bird inside the water to catch the fish.
|
Point to the Bird. | The bird is represented by the variable y1 whose value is -2. |
Point to the House | The fish is represented by the variable y2 whose value is -13. |
Point to the Distance Statement | The difference between y2 and y1 is y2-y1.
|
Click on Generic screen. | Click on the Generic screen.
|
Point to the Scale. | From this list we can select the scale of the number line.
|
Point to the number line representations. | We can choose between a horizontal or vertical representation of the number line.
|
Click on reset button. | Let us reset our screen.
|
Point to the colored balls. | Let us put the colored balls on the number line. |
Point to the number line | The variable x1 represents the pink ball.
|
Point to the Distance Description | The distance description tells us that x2 and x1 are 6 units apart.
|
Select Directed Distance radio button | Select the directed distance option.
Here the distance description tells us that x2 is 6 units more positive than x1. |
Point to the number line. | Here, x1 is the reference point.
|
Point to the Distance Description |
The description here tells us that x2 is more positive. |
Point to the bottom left swap button | If we swap the variables, the arrowhead points towards the left. |
Point to the Distance Description | The description tells us that x2 is more negative. |
Point to the bottom left swap button | Let us swap the variables once again. |
Point to the Distance Statement | Let us change the variable using the buttons in the distance statement.
|
Point to the number line | Hence, the absolute value of the difference between two integers is their distance. |
Only Narration | With this, we have come to the end of this tutorial. Let us summarise. |
Slide number 7
Summary |
In this tutorial, we have learnt how to:
|
Slide number 8
Assignment |
As an assignment,
|
Slide number 9
About the Spoken Tutorial project |
The video at the following link summarises the Spoken Tutorial project.
Please download and watch it. |
Slide number 10
Spoken Tutorial workshops |
The Spoken Tutorial Project team:
|
Slide number 11
Forum for specific questions |
|
Slide number 12
Acknowledgement |
The Spoken Tutorial project is funded by the Ministry of Education, Government of India. |
Slide number 13
Thank you |
This is Radhika Yadav, a FOSSEE summer fellow 2022, IIT Bombay signing off.
|