The development and use of the Web by science-technology museums, mass media, and other informal science learning resource centers to enable remote public access to their resources and expand their educational outreach programs has grown enormously over the past decade. Similarly, many "open source" learning and education portals are rapidly growing into major free global lifelong learning resources. At the same time, U.S. student achievement in science in middle and high schools continues to be lag far behind that of students in many developed countries, and many American K-8 science teachers