Estimating Square Roots

This applet helps you understand the mental math method of estimating square roots that is taught in my posts at Grey Matters called [url=http://headinside.blogspot.com/2012/07/estimating-square-roots.html]Estimating Square Roots[/url] and [url=http://headinside.blogspot.com/2012/07/estimating-square-roots-tips-tricks.html]Estimating Square Roots: Tips & Tricks[/url]. Any number from 0 to 999 can be chosen with the sliders, and you can use the checkboxes to see display or hide the method used to determine the numerator and denominator. This method gives a quick mental square root estimate whose square is [url=http://www.wolframalpha.com/input/?i=plot%5B%28%28%28floor%28sqrt%28x%29%29%29%2B%28%28x-%28%28floor%28sqrt%28x%29%29%29%5E2%29%29%2F%28%28%28floor%28sqr%28x%29%29%29*2%29%2B1%29%29%29%5E2%29-x*1.0%2C+%7Bx%2C+1%2C+1000%7D%5D]never farther from the given number than .25[/url]. The .ggb file is available for download at: [url=http://geogebratube.org/material/show/id/14586]http://geogebratube.org/material/show/id/14586[/url]

Visit: https://dl.dropbox.com/u/23420…quareRoots.html

greymatters

 
Resource Type
Activity
Tags
mental_math  square_root 
Target Group (Age)
19+
Language
English (United Kingdom)
 
 
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