Kouloumbaritsi, A., Dimitroglou, E., Mavrikaki, E., & Galanopoulou, D. (2016). Action Research on Using Flipped Classroom Principles to Teach Upper High School Biology. $\{upDelta}$$\upiota$$\upepsilon${\texttheta}$\upnu${\acuteε}$\upvarsigma$ $\{upSigma}$$\upupsilon$$\upnu${\acuteε}$\updelta$$\uprho$$\upiota$$\upomicron$ $\upgamma$$\upiota$$\upalpha$ $\uptau$$\upeta$$\upnu$ $\{upAlpha}$$\upnu$$\upomicron$$\upiota$$\up, 7. presented at the jun, National Documentation Centre ({EKT}).