Fig. 4
From: Primetime learning: collaborative and technology-enhanced studying with genuine teacher presence
Analysis of TEL environment log data. a The number of active students in the course plotted using the number of students who actively solved problems. b Timestamps for principles (red triangles), practice (green circles), problem answer submissions (blue squares), and primetimes (vertical lines) for each student as a function of time. Groups are numbered and separated by horizontal dashed lines. Data are shown only for 2016; data for 2017 are similar. c The data of the panel b compressed to 1 day and night. Shaded areas indicate the time of day outside 8 am and 4 pm