I have 30 years of experience, and specialize in the field of mathematics education with specific knowledge in the areas of mathematics assessment and evaluation, mathematics curriculum and mathematics teacher development. I have published on such topics as teacher content knowledge, assessment and student learnng of mathematics. My area of research is mathematics assessment and curriculum evaluation. I was also a program director of mathematics education. I was also a program officer at the U. S. Department of Education. I am an author or editor of more than a hundred publications on teaching, problem solving, attitudes, evaluation, and assessment in mathematics and science education. I have served as a consultant and reviewer for many funding agencies, projects, publishers, and professional journals.