Fibonacci numbers in Scratch

Example for versions Scratch 1.4

This example uses recursive definition of Fibonacci numbers, since Scratch doesn’t have an easy way to define a function. Besides, Scratch is a graphical language, the print-screen contains the actual information about the program, source text is only a transcription. 

set f1 to 1
set f2 to 1
set str to f1
repeat 15
   set f3 to (f1 + f2)
   set f1 to f2
   set f2 to f3
   set str to join (str (join (,) f1))
say join (str (...))

Fibonacci numbers example in Scratch
Fibonacci numbers example in Scratch