Decimal Pattern
Take the number pi = 3.14159265358979323846264338.... Compute integer multiples of pi . Then truncate the integer so that you only have the decimal part remaining. Graph the decimal part versus its position in the sequence. What do you see? What would be a logical explanation?
multiples of pi 
approximation 
truncation 
pi 
3.141592653 
0.141592653 
2*pi 
6.283185306 
0.283185306 
3*pi 
9.424777959 
0.424777959 
4*pi 
12.56637061 
0.566370612 
5*pi 
15.70796327 
0.707963265 

Extensions 
If you do the same thing with any other decimal number instead of pi, would the observation still be true? Why?
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