Totally Tessellated: Mosaics/Tilings As of July 1, 2013 ThinkQuest has been discontinued. We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Teachers - For your passion in guiding students on their quest. Partners - For your unwavering support and evangelism. Parents - For supporting the use of technology not only as an instrument of learning, but as a means of creating knowledge. We encourage everyone to continue to “Think, Create and Collaborate,” unleashing the power of technology to teach, share, and inspire. Best wishes, The Oracle Education Foundation Celtic knot Stone Celtic crosses, such as this, are a major source of our knowledge of Celtic knot design. Carpet page from Lindisfarne Gospels, showing knotwork detail. Almost all of the folios of the Book of Kells contain small illuminations like this decorated initial. History[edit] Examples of plait work (a woven, unbroken cord design) predate knotwork designs in several cultures around the world,[2] but the broken and reconnected plait work that is characteristic of true knotwork began in northern Italy and southern Gaul and spread to Ireland by the 7th century.[3] The style is most commonly associated with the Celtic lands, but it was also practiced extensively in England and was exported to Europe by Irish and Northumbrian monastic activities on the continent. Examples[edit] See also[edit] References[edit] External links[edit]
Mathématiques - Jeux et mathématiques. Eterea, the online portfolio of Cristobal Vila Making Celtic Knots This is an easy way to draw a Celtic knot. You don't have to rub anything out! This method uses colour and outlines. It is particularly suitable for free-form, flowing knots and entangled animals, as used in illuminated manuscripts. It is so simple that it can be used by young children. If drawing it on paper (in the 'real world'), then use a pale broad felt tip pen for the initial lines, and a dark thin felt tip for the outlines. If you want a knot with just one string and no loose ends, you must start with an odd number of lines in both directions. Once you've mastered the technique, you can try more complicated shapes. You can make any shape you want. You do not need to restrict yourself to a simple grid pattern (see left). I am not sure whether the painters of illuminated manuscripts used this technique. Return to index. © Jo Edkins 2003
Accueil CultureMATH Coordonné par, Professeur de mathématiques et docteur en histoire des sciences - e-mail Document déposé le 23/05/11. Editeur: Eric Vandendriessche. Présentation du dossier Ressources 1. Présentation L’atelier d’histoire des sciences et des techniques, coordonné par Matthieu Husson, est un dispositif qui vise à regrouper les enseignants du secondaire intéressés par l’histoire des sciences autour d’un projet commun : se former en histoire des sciences en élaborant une offre pédagogique destinée aux élèves dans le domaine de l’histoire des sciences et des techniques. Au niveau d’un établissement, les enseignants intéressés, se regroupent, définissent des axes de travail et élaborent des offres pédagogiques concrètes. Le dossier de CultureMATH en rapport avec l'atelier d'histoire des sciences s'enrichira au fur et à mesure des actions organisées dans ce cadre. Ressources Trajectoires de la balistique La conférence ici mise en ligne est l'une des actions concrètes de cet atelier. Voir la Vidéo
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Les logiciels et applications de construction de noeuds Voic une liste de logiciels et d'applications permettant de construire des noeuds et entrelacs celtes J'ai retenu les applications qui fonctionnent sous windows et qui sont gratuites (ou version d'évaluation). KnotsBag - Logiciel à Télécharger Logiciel de dessin VECTORIEL basé sur des graphes pour créer de magnifiques entrelacs: Un lien vers la dernière version, Knotbags 2.0. Vous pouvez télécharger une version sans licence (pas d'export) en bas de la page du lien Knotwork Une application JAVA, voici le site Vous pouvez le télécharger ici Knotplot - Logiciel à Télécharger Un logiciel de création de noeuds. Vous pouvez télécharger une version d'évaluation ici Knotworker - Logiciel à Télécharger Un vieux logiciel de création d'entrelacs Voici un apperçu Vous pouvez télécharger une version d'évaluation de 21 jours ici Proscribe - Application sans téléchargement Voici une application réalisée par Andy Sloss. Knotwork Designer - Application sans téléchargement
Accueil - Mathonautes Celtic - ♠ Pagan Roots The Celts were animists, believing that all aspects of the natural world contained spirits, and that communication was possible with these spirits. Druidry The Celts venerated certain trees. Druidry Druidry is a form of modern spirituality or religion that generally promotes harmony and worship of nature, and respect for all beings, including the environment. Celtic Books Celtic Music Celtic Movies Sources Alba (Scotland) Kentoc'h mervel eget bezañ saotret (Rather death than dishonour) Cymru (Wales) Kernow (Cornish)Onen hag oll Éire (Irish) Iberia Breizh (Breton) Gaul Mannin (Manx) Galicia Chris Jordan - Ushirikiano Ushirikiano noun (Swahili): partnership, collaboration, or community of shared interest This year I was honored to be chosen for the Prix Pictet Commission, which took me on a thousand-mile safari in a part of Kenya that most tourists never see. There I encountered a confederation of NGO’s working closely with local tribes to create a sustainable way of life based on principles of environmental stewardship, wildlife conservation, and peace. Despite enormous adversity that includes poverty, drought, and wildlife poaching, and some dubious intrusions of outside religious, commercial, and educational culture, this quiet mini-revolution, led by a council of tribal elders, is bringing peace and stability to a huge area of Kenya. Our twelve-day exploration traversed a wild, dry-baked landscape of red soils, thorny bushes, lions, hyenas, and isolated tribal villages with no paved roads or electricity for several thousand square miles. ~cj, August, 2011