Here is the video from Finland made by the 6th grade of our school together with their teacher Jari. I'm just a technical assistant this year!
European Chain Reaction is so popular in our school, that we've decided that it's only fair that we take turns. Two years ago it was our 5th grade, last year my then 3rd graders and now the oldest ones, 6th graders.
We hope that you'll like these "presents" bouncing out the package!