1100 and vice versa
Alighiero Boetti was an Italian artist who lived in the 20th century. He used mathematical patterns extensively in his art, some of which is currently being displayed in the Tate Modern, London until 27 May 2012. One series of pieces is called 'Alternating 1100 and vice versa' (they are embroidered rugs  see the pics below). They show the numbers 1 to 100 in different patterns. My year 7 students created their own version of this piece  see the pics on the right (although not using embroidery...!). We used this to teach fractions, decimals, ratios and percentages. Here are more examples of his work. How could you use these in your teaching? (Click on the pictures for more information). 
