The Freiker program at Crestview was started by two dads, and at the time of the interview, about ( ) of the schoolchildren biked to that school. 2.The incentive offered to children in Boulder who rode to school over 90 percent of the days was the chance to win a(n) ( ) . 3.The three main sources of funding for the original Freiker program were ( ) . 4.The Boulder Bike-to-School program has expanded from Colorado to the states of California, Texas, Wisconsin, and Virginia in the U.S., and internationally to ( ) .