Aided by NSF funded projects, Ron Eglash (Rensselaer Polytechnic Institute professor) offers an interesting collection of web sites that focus on what he calls Culturally Situated Design Tools. He claims that because many cultural designs are based on mathematical ideas, computer software can help students learn quality mathematics via the simulation of original cultural artifacts...then enrich their understanding by designing their own creations within that same cultural context.
Be prepared to spend some time exploring this web site, which explores the following cultural connections to mathematics:
The site also includes NCTM Standards-based lesson plans, assessments, and other teaching materials. Lots to explore...lots of fun!