Fig 1.
Data flow diagram shows the processing steps used with edX course data.
Fig 2.
EdX course structure provide levels of learner interaction analysis and guide base map construction.
(A) Shows the 5-level course module hierarchy used in the “Architecture of Complex Systems” course; (B) a bar graph shows difference between instructor’s predictions and the average time learners spent on the same set of modules, aggregated at the page sequence level of the course hierarchy; (C) learner path shows temporal sequence of learning modules accessed by a high performing learner.
Fig 3.
Learners’ path overlaid on force-directed layout of used course modules.
Learner path of a learners with a high (left) and a low (right) performance scores overlaid on force-directed layout of course modules.
Fig 4.
Percentage of learners accessing a module in course sequence.
Plotted are the 310 of 551 modules at lowest level of course structure used by learners. Vertical lines indicate the last module of a given course section.
Fig 5.
Mean number of interaction events per learners with a given module in a course.
(A) Plots the 117 HTML modules, (B) shows 49 video modules, (C) 139 ungraded problem modules, and (D) 5 open assessment modules from the lowest level of course structure that were used by learners. Vertical dashed lines indicate the last module of a given course section. Circle area size is linearly scaled to show the percentage of a group that interacted with a module.
Fig 6.
Correlation of different variables with final grade (left) and number of events (right). The plots compare: (A) grade and events, (B) grade and unique modules accessed in the course, (C) grade and open assessment events, (D) events to cumulative user sessions, (E) events and problem attempts, (F) events and open assessment events.