PhET-Simulations-for-Mathematics/C2/Number-Line---Integers/English
Title of the Script: Number Line: Integers
Author: Radhika Yadav
Keywords: PhET simulation, number line, integers, comparison, absolute value, temperature, sea level, spoken tutorial, video tutorial.
Visual Cue | Narration |
Slide Number 1
Title Slide |
Welcome to this Spoken Tutorial on Number Line: Integers.
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Slide Number 2
Learning Objectives |
In this tutorial, we will learn how to:
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Slide Number 3
System Requirements |
This tutorial is recorded using,
macOS Catalina version 10.15.7 Google Chrome version 101.0.49 |
Slide Number 4
Pre-requisites
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To follow this tutorial,
Learners should be familiar with topics in basic mathematics.
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Slide Number 5
Link for PhET simulation
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Please use the given link to download the PhET simulation. |
Slide Number 6
PhET simulations
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In this tutorial, we will use the Number Line: Integers PhET simulation. |
Point to the simulation in the Downloads folder
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I have already downloaded the simulation to my Downloads folder. |
Double click on the number-line-integers_en.html file | To open the simulation, double click on the number-line-integers_en.html file.
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Point to the simulation interface | This is the interface of the Number Line: Integers simulation. |
Point to each screen | The interface has two screens, Explore and Generic
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Click on Explore screen | Click on the Explore screen. |
Point to the number line. | The screen has a vertical number line to depict the elevation of objects. |
Point to the Objects box. | This is the Objects box at the bottom of the screen. We can drag and place objects on the number line.
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Point to the different scenarios. | We can view this simulation in different scenarios.
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Point to the smaller reset button. | The smaller reset button resets the current scenario. |
Point to the information check boxes. | On the top right, we have the following check boxes.
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Point to the Comparison Statement on the top centre of the screen | At the top, is the comparison statement.
We can again maximise it when required. |
Point to the reset button | The reset button resets the simulation. |
Point to the Objects box | Let us put the objects inside the scenario.
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Check the Absolute Value check box | Let us check the Absolute value check box.
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Point to the Person. | The person is placed 62 metres above sea level.
This is represented as 62 metres on the number line. |
Point to the Bird. | The bird is placed 30 metres above sea level.
This is represented as 30 metres on the number line. |
Point to the Fish. | The fish is placed 45 metres below sea level.
This is represented as -45 metres on the number line. |
Point to the Comparison Statement. | See the comparison statement at the top.
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Point to the sea level on the screen. | Note that an object can also be placed on the surface of the sea.
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Drag the Bird down to the sea level. | Let us drag the bird down to sea level. |
Point to the number line. | In this case, it is represented as 0 on the number line.
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Click on the second scenario. | Let us select the second scenario.
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Point to the number line. | This number line represents bank account balance.
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Point to the buttons on the left of the number line. | Using these buttons we can add or remove money from the account.
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Point to the toggle switch. | The toggle switch on the right, allows us to represent one or two accounts. |
Click the add money button for object 1. | Let us deposit 5 dollars in the first bank account.
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Click the remove money button for object 2 | Let us withdraw 3 dollars from the second bank account.
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Slide number 7
Transactions table |
Now, let us perform the following transactions in the simulation.
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Point to the number line. | This is the result of the transactions. |
Check the Absolute Value check box. | Now check the Absolute Value check box. |
Point to the bank account 1. | Bank account 1 has a balance of 30 dollars.
It has moved further right from the origin. Its relative position from the origin is plus 30.
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Point to the bank account 1. | Bank account 2 is in debt of 17 dollars.
It has moved further left from the origin. Its relative position from the origin is -17. |
Point to the number line. | The total difference between the two accounts is 30-(-17) which is 47 dollars.
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Point to the comparison statement.
Point to the two bank accounts. |
The comparison statement shows that -17 is less than 30.
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Click on the third scenario. | Let us select the third scenario.
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Point to the number line. | This vertical number line represents the temperature of different locations.
The 'Fahrenheit scale is chosen by default.
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Click on ℃ radio button. | Let us choose the Celsius scale. |
Point to the drop down list. | We can select the months of the year from the drop down on the right.
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Point to the Objects box. | Let us put the thermometers at different locations on the map. |
Check the Absolute Value checkbox. | Let us check the Absolute Value checkbox.
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Point to the Location A. | The temperature of location A is 24 degrees above 0.
This is represented as 24 degrees Celsius on the number line.
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Point to the Location B. | The temperature of location B is 19 degrees above 0.
This is represented as 19 degrees Celsius on the number line.
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Point to the Location C. | The temperature of location C is 33 degrees below 0.
This is represented as -33 degrees Celsius on the number line.
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Point to the Comparison Statement. | This is also reflected in the comparison statement.
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Point to the number line. | Observe that temperatures above 0 degrees are represented as positive integers.
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Slide number 8
Temperature Comparison table |
This table represents the temperatures of 3 different locations over 5 months.
(Note: See table 2)
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Click on Generic screen. | Now click on the Generic screen.
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Point to the Scale. | From this list, we can select the scale of the number line.
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Point to the number line representations. | We can choose between a horizontal or vertical representation of the number line.
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Point to top right check boxes. | On the top right, we have the following check boxes.
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Point to the number line | Explore the Generic screen to understand the number line concepts generally.
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With this, we have come to the end of this tutorial. Let us summarise. | |
Slide number 9
Summary |
In this tutorial, we have learnt how to:
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Slide number 10
Assignment |
As an assignment,
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Slide Number 11
Assignment
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Here is another assignment for you.
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Slide Number 12
About the Spoken Tutorial project |
The video at the following link summarises the Spoken Tutorial project.
Please download and watch it. |
Slide Number 13
Spoken Tutorial workshops |
The Spoken Tutorial Project team:
conducts workshops using spoken tutorials and gives certificates on passing online tests. For more details, please write to us.
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Slide Number 14
Forum for specific questions
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Please post your timed queries in this forum. |
Slide number 15
Acknowledgment
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The Spoken Tutorial project is funded by the Ministry of Education, Government of India.
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Slide number 16
Thank you |
This is Radhika Yadav, a FOSSEE summer fellow 2022, IIT Bombay signing off.
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