  Modern physics is now a regular course for non-physics majors who do not have
to take the accompanying laboratory. This lack of an experimental component
puts the engineering students at a disadvantage. A possible solution is the use
of computer simulations to add a constructivist element to the class. In this
work, we present a set of computer simulations of fundamental experiments, a
key to the teaching of modern physics, as well as their in-class implementation
and assessment. Preliminary results indicate that the use of these simulations
produces a substantial increase in student comprehension.
