An article on the String Art Fun website describes a way of using string art as a fun way to teach math to second or the third grade pupils. The children are given a sheet of multiplication sums to solve. Once they have the answers they can use them to create a geometric design. The design can be either drawn on a supplied template, stitched on card using thread and an embroidery needle or created on a board with nails and string.
For more details and a sample work sheet visit the Notes for teachers section of the String Art Fun website.