a nice example-project using the ‘random’ block seen it by @kodoz - remix it for SDS
+ with discussion http://scratch.mit.edu/discuss/topic/39713/ + Studio 'random numbers' http://scratch.mit.edu/studios/444585/ + Scratch-Wiki (DE) http://wiki.scratch-dach.info/wiki/Zufallszahl_von_%28%29_bis_%28%29_%28Block%29