Rulers and templates that are used to create several connected picots (or prairie points) made from a single piece of material, as well as methods for making and using such rulers, are described in this application. The rulers described in this application have a plurality of evenly spaced, alternating slots formed or cut in opposite, parallel edges of a substrate, resulting in evenly spaced, alternating tabs located on the opposite, parallel edges of the substrate. The ruler may be used to cut or mark material into connected squares that may be folded to make picots. The resulting picots are of uniform size and spacing, and are connected as a unitary piece of material.