9451972 Stone Grinnell College is breaking down the barrier between lecture and laboratory in four fundamental courses that affect mathematics, computer science, and science majors: multivariable calculus, linear algebra, introductory programming, and introductory statistics. Instead of fixed-length labs in a separate laboratory room, they are weaving variable-length "mini-labs" into the fabric of lectures and discussion in a blended laboratory/classroom. This innovation makes it possible to integrate the laboratory experience more thoroughly with the theoretical content of the course, to strengthen the impact of this experience through in-class analysis and discussion immediately following the laboratory, and to position labs more flexibly, providing the experience just when the students need it. The hardware for such in-class integrated laboratory experiences supports quick access to software by many student users simultaneously, an easy-to-use graphic interface providing multiple large windows, high-quality color graphics and animations, clear display of large data sets and matrices, and access to large application packages. In the design for evaluating and disseminating the mini-lab materials that they are developing, they are building on their experiences as leaders and contributors in several projects with national impact -- projects in which they designed, evaluated, and disseminated innovative course materials.