The Olympiad was organised by the Mathematics department of VU Amsterdam, together with the Nederlandse Wiskunde Olympiade (Dutch Mathematics Olympiad). Invited were those who obtained the highest score on the Kangoeroe Wedstrijd last spring.
The day started with a lecture for the children and their parents about rabbits and the golden ratio by Bob Planqué.Then they answered the eight questions of the first part of the olympiad. After lunch they competed in the second part with eight very challenging problems, such as the following: "What is the smallest integer a>10 for which it holds that a is divisible by 10, a+1 by 11, and a+2 by 12?"
While the volunteers graded the olympiad in a race against time, the children followed a workshop making polyhedra with cards, provided to them by Vierkant voor Wiskunde. The day ended with the prize ceremony in which the top 10 from class 1 and the top 10 from class 2 were given a mathematical present.