Sharon's third grade class pursued an exploration of the motion of toy cars that occurred over nineteen class days (about 19 hours of class time). Below is a nodal representation of their exploration. Each node corresponds to one or more activities that the students engaged in, from the launching activity (upper left node) onward. Bold arrows show the actual sequence of activities; smaller arrows symbolize the notion that Sharon's class could have moved in other directions, depending on what happened in the classroom and how that affected the "next move" decisions Sharon made. When multiple activities are listed in a single node, it indicates that these activities were occurring simultaneously in the classroom (e.g., some student groups examine how ramps affect toy car motion, while other groups examine how rubber bands affect toy cars).

Each node is (or will be) linked to the activity page that corresponds to this implementation. These activity pages include video clips showcasing important student discussions, teacher input on the rationale for next moves, and so forth, all to 'flesh out' the enactment for the user. For nodes with multiple activities, the user can choose an activity from a pop-up menu. When the same activity (e.g., Ramps) is listed in multiple nodes, the link in a particular node will take the user to a section of the activity page with video and materials specific to that node.

Note: The nodes for Faster vs. further (Days 9-11); Ramps, rubber bands, & pullback cars (Days 12-13); Lighter vs. heavier (Day 16); and Solar car, pullback car, battery car, & windup car (Days 17-19) are currently not active.

The timeline above shows which days (top row) of the implementation correspond to each node. Some nodes (such as the launching activity) correspond to two or more days of science class, while others (such as Ramps on Day 8) correspond to only part of one day. The nodes' listings in the timeline are also linked.