Protecting America's Competitive Edge Act (S. 2198) : helping K-12 students learn math and science better : hearing before the Subcommittee on Education and Early Childhood Development of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Ninth Congress, second session, on examining S. 2198, to ensure the United States successfully competes in the 21st century global economy, focusing on efforts to improve math and science and technology education, March 1, 2006.