RT @NVvWiskunde: Wiskunde leren is kwestie van oef… This entry was posted in and tagged Vinc69 NVvWiskunde not-a-reply not-a-social-broadcast retweet on 14 december 2013 by . RT @NVvWiskunde: Wiskunde leren is kwestie van oefenen nu.nl/wetenschap/365… … tmi.me/1cZJbq