9Jonathan Bergmann and Aaron Sams:Why Flipped Classrooms Are Here to Stay [EB/OL]. http://www.edweek.org/tm/articles/2012/06/ 12/fp_bergmann_sams.html .
10Robert Talbert. Inverting the Linear Algebra Classroom [DB/OL]. [2013 -01-20]. http://prezi.com/dz0rbkpy6tam/inverting-the-linear- algebra-classroom.