A successful science classroom would integrate modeling and simulation with the traditional methods of teaching (ie. lecture, textbook, hands-on activities, engineering activities, labs, multi-media,.....) not just one method. The key in the classroom is to let students have a variety of experiences with a concept or concepts and then, with this background knowledge, let them go deeper into the material with the teacher as a facilitator/coach instead of the "sage on the stage"; simulations allow for this deeper learning.
In this classroom, students should not only have time to work individually for mastery, but also, have multiple chances to collaborate with others looking at the teacher for guidance, setting individual as well as group goals. The teacher is no longer the "giver of all answers", and students can become independent learners - guiding and learning from each other.
Computers are, not the main focus of the science classroom, but are an adjunct to student learning and allow for the deeper study of a concept in action. Students can then learn the value of computers and model simulations in different fields of study instead of thinking of computers and programming just for the computer tech industries.