About
Rational and Irrational Numbers in Decimal Form, and on a Number Line
An interactive model to show how irrational and rational numbers can be displayed, both in decimal, and in a number line. based on ideas from https://www.geogebra.org/m/hudgdmqu https://www.geogebra.org/m/achKw2SGTranslations
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Software Requirements
| Android | iOS | Windows | MacOS | |
| with best with | Chrome | Chrome | Chrome | Chrome |
| support full-screen? | Yes. Chrome/Opera No. Firefox/ Samsung Internet | Not yet | Yes | Yes |
| cannot work on | some mobile browser that don't understand JavaScript such as..... | cannot work on Internet Explorer 9 and below |
Credits
Shaun; lookang
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Sample Learning Goals
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For Teachers
Interactive Tool for Visualising Rational and Irrational Numbers 2021 JavaScript HTML5 Applet
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| Initial state of the interactive |
The link to the interactive can be found here.
Description
This is a simple interactive to help students visualise rational and irrational numbers when placed on a number line. For rational numbers, they can manipulate the numerator and denominator to form the desired fraction. They can also change the number of decimal places displayed to gain a better understanding of repeating decimal values.
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| Interactive displaying rational numbers |
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| Interactive displaying irrational values |
This interactive also comes with a simple number game. Students can generate a random number, after which they can drag the red indicator on the number line to locate the value. A "Check answer" button is provided to help students determine how close their answer is to the desired value.
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| The number game in progress |
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| "Check answer" dialog showing how close the student's answer is |
The link to the interactive can be found here.
Research
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Video
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Version:
Other Resources
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