Each bridge had to support a load without breaking. Students had specific guidelines to follow when designing their bridge including: bridge span of 25cm, a 7cm cube must pass under the bridge while standing independently, each bridge could only be constructed with sticks glue and 20 pound (printer) paper. Students were to leave a hole in the center of their bridge for a hook to pass through held by a 3 inch by 5 inch block of wood.
Students were graded by having three attempts to support a weight load from their bridge. It was a great learning experience and which designs could hold the required weight.