Ethnomathematics: 25 Rangoli designs you can make with your kids, using grids. Are these used for storytelling, like Sona grid art from Africa? This art activity goes well with grid games from http://www.moebiusnoodles.com/TheBook
Hinduism has four main devotional sects: Vaishnavism, Shaivism, Shaktism, and Smartism. There are countless subsects with regional variations, with them there is a wide variety of theological and ritual variance.