One of many projects in virtual worlds in Opensim, platform devoted to teaching, perhaps the most distinctive and significant, was the one that had as its purpose the application of mathematics to the culinary art in a hotel school. It was an experimentation iTEC (Innovative Technologies for an Engaging Classroom) and innovative teaching methodology was used, with the help of new technologies, using Opensim and several useful widgets to your project. Studying geometry, using various geometric shapes conceived, designed and processed, they are built in 3D tessellations in opensim, then reproduced in laboratory confectionery, sugar paste and used to decorate cakes with colored geometric elements and special shapes. All through insights, searches on the net, development of concept maps, team work, aimed at the development of pupils' blog and lots of fun. Was also attended by the industry's most experienced students and faculty kitchen, for processing geometric tessellations cakes.