Profile David Bulin State: Nebraska City: Omaha Zip Code: 68164 Are you currently teaching? : Yes What grade do you teach?: High School/Secondary What subject(s) do you teach?: Science How many years have you been teaching?: 9 Years United States "Expo Dry Erase Markers" Last activity: on 15/04/2016 Joined: on 15/04/2016 Design quotient Earn DQ points by participating in a challenge. What are (DQ) Points? DQ points are a measure of your contributions, they correspond to how active you are in the Research, Ideas and Evaluation phases of a challenge.