27 Apr 2020Leen NoordzijLeave a Comment on Puzzles with my grandchildren Updated 2020-04-27 Water-lilies growing in a pond Puzzles with my grandchildren Updated 2020-04-27 Water-lilies growing in a pond
5 Apr 2020Leen NoordzijLeave a Comment on Quantum Mechanics found in a nutshell. Work in progress. Updated 2020-04-05 Exercise 6.7 the matrix n=3 Quantum Mechanics found in a nutshell. Work in progress. Updated 2020-04-05 Exercise 6.7 the matrix n=3
8 Dec 2019Leen NoordzijLeave a Comment on Wiskunde D Online VWO 6 Blok 15-16.( Update Blok 15 Les 3 2019-12-08) Wiskunde D Online VWO 6 Blok 15-16.( Update Blok 15 Les 3 2019-12-08)
15 Nov 201915 Nov 2019Leen NoordzijLeave a Comment on Wiskunde D Online VWO 5 Blok 8-14.( Update Blok 14 Les 4 en Epiloog, 2019-11-15) Wiskunde D Online VWO 5 Blok 8-14.( Update Blok 14 Les 4 en Epiloog, 2019-11-15)
29 Jan 201718 Sep 2018Leen NoordzijLeave a Comment on Raindrops keep falling on my umbrella. Raindrops keep falling on my umbrella.
14 May 201618 Sep 2018Leen NoordzijLeave a Comment on Isoperimetric Inequality, an Engineering Approach: a Fallacy? Isoperimetric Inequality, an Engineering Approach: a Fallacy?
