Math Day 15 (age 15)
During the Math Day 15 secondary school students (3havo/vwo, age 15) work for a day (ca. 09:00-14:00 hr) in three or four strong teams on a ‘large’ mathematical (thinking) task, which focuses on problem solving. The final product is a paper. The task matches as closely as possible to the new goals for the lower grades of secondary education and the cTWO thinking activities.