Conceptual change is aided by model building. Visualizing the relationships between different components of the model using a graphical interface is a powerful technological capability. Powersim is one such tool. Such an iterative model building activity to predict theoretically principled outcomes is stated to be conceptually engaging. There are other tools like Stella and VSim that fall into the same category.
Here is an entertaining talk about how everyday objects can be used for science education.
We are all aware / starting to better appreciate that "it definitely ain't about the technology", but what conceptual understanding the technology can effect.
Personally, I see two advantages of such low cost technologies:
1. They increase access to interesting learning materials for all - quickly.
2. They can serve as the kernels of ideas for influencing emerging technologies.
( Like in out class discussion : models are still expensive but they can guide / inspie
Do share your thoughts.