Limits of Trig Functions Choice Board gives students the chance to take ownership of their learning and choose what problems they want to solve while practicing solving the special trig limit (lim x- > 0 sin(x)/x). Choice boards work great as individual or partner activities during class or at home for students looking for additional practice problems. Limits of trig functions choice board is the perfect NO PREP activity that includes 16 problems total divided into 4 sets. All problems