Synergy is a publication about programs of the National Science Foundation's Directorate for Education and Human Resources (EHR). Each Synergy issue highlights an EHR activity that demonstrates progress in reforming the teaching and learning of science, mathematics, engineering, or technology, from prekindergarten through career entry. The "synergy" derives from NSF working in partnership with organizations in all sectors of the economy, throughout the United States, to help foster the positive changes in education to which NSF is dedicated. The ingredients of these success stories are unchanging: access to quality science and mathematics education, high expectations for success, proven excellence of materials, and measurable gains in learning by all students.