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De plastic geofractor uit het boekje is nu ook verkrijgbaar in de houten variant. Prijs €12,50

Half maart 2023 is in het vakblad van wiskundeleraren een artikel van me verschenen naar aanleiding van de publicatie van Zebra 66 Islamitische Meetkundige Patronen

Lees hier

The developing process is continued. click here.

During the art- and maths day (Ars et Mathesisdag), 24 november 2018, I gave a lecture about analyzing historical geometric patterns and trying to find new ones.

A great timelapse construction by Ameet Hindocha. More can be found on the website Ambigraph

The journal For the Learning of Mathematics made my 2014 article 'Learning geometry by designing Persian mosaics' online available: See https://flm-journal.org/Articles/2E0CB6E94D76C79C2F341680D60F17.pdf

Here you find my reflections on  a very critical review of Snijpunt Isfahan by a mathematician (in Dutch)

Lecture in Dutch

24 March 2018

Based upon the famous Alhambra pattern with circle segments. Click on the picture below to go there

Look here

Dolf Jansen interviewed Maite and me (in Dutch) during the radio program 'Spijkers met Koppen', to hear and watch the interview, klick here

Coen Verbraak interviewed Maite and me about Maite's book 'Snijpunt Isfahan' (in Dutch), to hear and watch the interview, klick here

May 13 2017 we celebrated the opening of our new location Burgwal 20 Den Burg. Here you find artwork composed with beachcombed materials by Maria Roelofsen and my design studio for making new pattern compositions based upon the Islamic design tradition. For further information also look at www.museumgalerierat.nl

A new floral design with worksheet. Click on the picture to find more information about the Khatai Flower.

March 24th 2017

In the Tropenmuseum I delivered a workshop on the Islamic design tradition of geometric patterns in Dutch, further information here

New poem in Dutch:

Één Jaar

                                 May 6th 2016

A new subject is being developed and information will be available on this website: floral designs. I started today with the lotus flower. Click on the lotus below to visit the right tab.

                        24th of March 2016

Download my puzzle-/colour plates at this link of the Tropenmuseum Junior 

I wrote a short story in Dutch about a child who draws spiral figures at the beach

Click on the picture below and check the two slide shows on the 2015 results. 

A method to construct a near-regular heptagon now published on this site

2014, March.

My article 'Learning Geometry by Designing Persian Mosaics' is published in issue nr. 100 (March 2014) of the Canadian journal 'For the Learning of Mathematics'.

At the flm-website you can find an Abstract.

Click on the picture below to find a series of patterns with octagons

The workshop held on Texel was attended by 13 people in total. Among them: a furniture maker, a designer of lamps, quilters, painters and teachers. See the photo-impression of the workshop

This article (text and photo Pip Barnard) is about my fascination for Islamic geometrical ornamentation and how it can be used in (mathematics) education.

An article about the artwork by Maria Roelofsen and myself was published in the Dutch newspaper 'Reformatorisch Dagblad' on 30 december 2013. (Text Janneke van Reenen-Hak, Photo's Sjaak Verboom)

At the Design Center of Istanbul a six-days congres was organized with lectures and workshops delivered by experts in this field. Incredibly inspiring!

http://www.igp-istanbul.com/eng/

May 2013. A three day conference for mathematicians and artists on geometric Islamic patterns was held. Lots of inspiring workshops and lectures were delivered.

Workshop for students, Institute for Studies of the Middle East, Leiden University, 27 march 2013

During the conference for Maths teachers held december 18th 2012 at the Groningen University I gave a lecture about using islamic mosaics to teach geometry at all levels in secundary schools.

June 2012.

In the review for Dutch mathematics teachers called 'Euclides' the article 'Designing Persian Mosaics in the Classroom. Students in the centre of a medieval design tradition' appeared (for the article in Dutch click here).