Through the ages, various forms of visual expression have implicitly (and explicitly) drawn on a variety of mathematical principles. The people at the Center for Cultural Design at Rensselaer Polytechnic Institute are interested in reaching out to a wide range of people through culturally-situated design tools, so they have created this fine site to do just that. The activities offered on the site are designed to help students learn standards-based mathematics through examinations of pre-Columbian pyramids, basket weaving, and rhythm wheels. Within each of the activities, visitors can read a bit of historical background, and then participate in a number of interactive activities designed to reinforce a range of mathematical principles and axioms. Educators will appreciate the teaching materials that are included with each activity, as they include links to other materials and examples of student work.