Who builds and films the most astonishing and creative Rube Goldberg / Robert S. Petersen-like chain reaction in 2015?
Let's build ONE BIG CROSS BORDER EUROPEAN CHAIN REACTION!
Hi Poland,This video isa nice example for my lesson when we will be talking about the density of materials!A really nice chain, this is! Goodluck on the voting!Dave from Belgium
NICE SHORT CHAIN. ISRAEL