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About

 

For Teachers

Translations

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Software Requirements

SoftwareRequirements


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

Dieter Roess - WEH- Foundation; Tan Wei Chiong; Loo Kang Wee

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Sample Learning Goals

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For Teachers

This simulation allows you to change the number n with a slider, where the regular polygon used to approximate 2π has 2^n sides.
 
The graph on the left shows the graphical approximation, and the top right corner shows the lower bound, upper bound, and the actual value of 2π (correct to 9 digits).
 
The graph on the right shows how the polygon is constructed from n = 2 to n = 3 using Pythagoras' Theorem.

Research

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Video

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 Version:

  1. http://weelookang.blogspot.sg/2016/02/vector-addition-b-c-model-with.html improved version with joseph chua's inputs
  2. http://weelookang.blogspot.sg/2014/10/vector-addition-model.html original simulation by lookang

Other Resources

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