This improvement allows students to compare runs of the model they are exploring and document their observations about changes that they make between runs. This feature is designed to support individual student work, small-group work, whole-class participation using HubNet and teacher-lead whole-class activities.

With the new HubNet Teacher Client, teachers can easily manage a HubNet activity running on a remote server. Using this new client is as easy for teachers as the regular client is for students. The HubNet Teacher Client gives the teacher a full set of controls, through a familiar interface that is nearly identical to what they would see if they were running the activity directly on their own machine.

HotLink Replay enables students to record, compare, and annotate plots generated by the same or different model runs, as well as to recall what the visuospatial display looked like when important plot features were generated.

DeltaTick is a simple, visual block-based programming environment that is designed to support students' construction of agent-based models by emphasizing the structural, levels-based, and behavioral aspects of those systems, and the ways they contribute to quantitative change.

In the past, Hubnet support was limited to Java-eanbled devices (laptops were mainly used). The Android client greatly expands the universe of devices that can participate in a HubNet activity. The project resulted not only in a working client, but an improved architecture for supporting additional devices in the future.