way that is consistent with the temporal order of students’ activities. For expository convenience, only part
of the plan is shown in the figure (for example, the
Compute_Sum complex action is not presented). The
plan visualization was introduced to the students using
an interactive tool that allowed them to drill down to
reveal the constituents actions of each node in the tree.
The list visualization presented students with a
bulleted list of the basic actions performed to solve
the example problem. This visualization is obtained
from a linear sequence of temporally ordered actions.
It represents the default support that is currently
available to students using the software. A partial list
of these actions is shown in figure 8.
Figure 6. Solving the COIN problem Using TinkerPlots.
Figure 7. Tree Visualization of the Expert Solution to the COIN Problem.