Welcome! This is the homepage for the Bonhoeffercollege Castricum Planting Science classroom. Our teachers are Arjan de Graaf and Kees Dennemans. The class is split in Monday/Wednesday (Arjan) and Wednesday/Thursday (Kees). Our plan is to have 12-14 groups of 4 students assigned to an individual science mentor. The class will start March 7 and will end April 1. The students at Bonhoeffercollege Castricum will be testing how sea water influences the germination of a variety of seeds.