A great generator 14x8=112 fractals patterns. After a pattern change the sliders and click on the green flag. *********************** If you don't know fractal, greenflash project 's very good http://scratch.mit.edu/projects/greenflash/672029 With my project you can see easily "Self similarity" .See Ex11 Density2 *********************** First look : Ex1 D6 : Sierpinski Carpet (you can see a lot on Scratch) but now change: D=4 or D=3 this 's new. *********************** I like : Ex2 D3 Ex5 D6 Ex7 D4 Ex13 D5 Ex14 D3 Post your discoveries *********************** CREDITS :Jens I make the first version (for test) with a recursive block with BYOB2.99 . The version for Scratch 1.4 's an adaptation for the Scratch Day. En français. Un très bon fascicule : "La recursivité en geométrie : les fractales" Roger Cuppens IREM de Toulouse et Laboratoire MLAD de l'Université Paul Sabatier "Géométrie et mesures fractales.Une introduction" Claude Tricot Ellipses