1953 vintage. "MeneerNaSk" (MrScience) is the nickname my students gave me. My Dutch students can always reach me on my FB-account or by e-mail.

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Level 20 in Algebra Level 18 in Chemistry Level 17 in Physics Level 15 in Prealgebra Level 14 in Statistics Level 13 in Precalculus Level 12 in Earth Science Level 11 in Organic Chemistry I Level 10 in Calculus Level 10 in Trigonometry Level 9 in Biology Level 8 in Geometry Level 8 in English Grammar Level 7 in Astronomy Level 6 in Anatomy & Physiology Level 3 in Astrophysics Level 1 in Socratic Meta