During the event all 4- to 12-year-olds can participate in a programme consisting of 3 blocks with the central theme will be "Circus".
There will be games, handicraft, and laughing, running and playing. 
There also will be a clinic in which the children will practise a circus act, and perform it latter in the day in a real circus tent.
There will, of course, be breaks in the program for drinks and snacks.
The event will take place at the following location:

De Twiske Poort near Oostzaan (http://www.twiskepoort.nl)  

It is the intention that the parents, family, and other interested parties will come to see the circus acts. 
You can order tickets for an amount of 6 Euro per person. 
The entire proceeds of the ticket sales will be presented at the end of the performance in the form of a check to the:  

Cliniclowns (http://www.cliniclowns.nl/)  

Shell management has promised to increase the proceeds of this event with a substantial amount.
Of course, the organization would appreciate it if you'd like to sign up as a volunteer to help with the children and their activities.