TedTalks: How does physical activity during school breaks affect students` concentration? 

In each partner school students carried out a week-long challenge. No mobile phones in schools. They shared their experience in the TedTalks.

Introduction: https://www.youtube.com/watch?v=TpQK4th-5Ko

TedTalk by the Croatian team: https://www.youtube.com/watch?v=IydBxvdZ7wg&t=25s

TedTalk by the Polish team: https://www.youtube.com/watch?v=NMpRJ61ecQ0&t=32s

TedTalk by the Spanish team: https://www.youtube.com/watch?v=GeY1zrmmoQ8&t=20s

TedTalk by the Swedish team: https://www.youtube.com/watch?v=os8v81iOAxU&t=51s

TedTalk by the Turkish team: https://www.youtube.com/watch?v=sjZ3RJDmrqs&t=78s