1. What’s the Use of Lectures?;Bligh,1998
2. A universal learning tool for classrooms?;Cue,1998
3. Electronically enhanced classroom interaction;Draper,2001
4. Programmed learning news, feedback devices in university lectures’;Dunn;New University,1969
5. Interactive-engagement versus traditional methods: a six-thousand-student survey of mechanics test data for introductory physics courses;Hake;American Journal of Physics,1998