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![Ioannis LEFKOS | Teaching Laboratory Staff | Physics , Pedagogy, Msc in Science Education, PhD in Science Education | University of Macedonia, Thessaloníki | UOM | Department of Educational and Social Policy | Research profile Ioannis LEFKOS | Teaching Laboratory Staff | Physics , Pedagogy, Msc in Science Education, PhD in Science Education | University of Macedonia, Thessaloníki | UOM | Department of Educational and Social Policy | Research profile](https://i1.rgstatic.net/ii/profile.image/272160774160384-1441899593027_Q512/Ioannis-Lefkos.jpg)
Ioannis LEFKOS | Teaching Laboratory Staff | Physics , Pedagogy, Msc in Science Education, PhD in Science Education | University of Macedonia, Thessaloníki | UOM | Department of Educational and Social Policy | Research profile
![Turquoise Waters of Agios Ioannis Beach at Lefkada, Greece Stock Photo - Image of vibrant, lefkas: 110319742 Turquoise Waters of Agios Ioannis Beach at Lefkada, Greece Stock Photo - Image of vibrant, lefkas: 110319742](https://thumbs.dreamstime.com/z/turquoise-waters-agios-ioannis-beach-lefkada-greece-turquoise-waters-agios-ioannis-beach-lefkada-greece-located-110319742.jpg)
Turquoise Waters of Agios Ioannis Beach at Lefkada, Greece Stock Photo - Image of vibrant, lefkas: 110319742
![Villa Maria (Ref : 12386) in Lefkas With Swimming Pool | Villas in Agios Ioannis for Couples, Families and Couples Villa Maria (Ref : 12386) in Lefkas With Swimming Pool | Villas in Agios Ioannis for Couples, Families and Couples](https://villa.images.holiday/Villa-Maria-Agios-Ioannis-Lefkas-large.jpg)
Villa Maria (Ref : 12386) in Lefkas With Swimming Pool | Villas in Agios Ioannis for Couples, Families and Couples
![Turquoise Waters Of Agios Ioannis Beach Of Lefkada, Greece, Located At The Ionian Sea. Stock Photo, Picture And Royalty Free Image. Image 96114660. Turquoise Waters Of Agios Ioannis Beach Of Lefkada, Greece, Located At The Ionian Sea. Stock Photo, Picture And Royalty Free Image. Image 96114660.](https://previews.123rf.com/images/tenedos/tenedos1802/tenedos180200047/96114660-turquoise-waters-of-agios-ioannis-beach-of-lefkada-greece-located-at-the-ionian-sea.jpg)
Turquoise Waters Of Agios Ioannis Beach Of Lefkada, Greece, Located At The Ionian Sea. Stock Photo, Picture And Royalty Free Image. Image 96114660.
![Ioannis LEFKOS | Teaching Laboratory Staff | Physics , Pedagogy, Msc in Science Education, PhD in Science Education | University of Macedonia, Thessaloníki | UOM | Department of Educational and Social Policy | Research profile Ioannis LEFKOS | Teaching Laboratory Staff | Physics , Pedagogy, Msc in Science Education, PhD in Science Education | University of Macedonia, Thessaloníki | UOM | Department of Educational and Social Policy | Research profile](https://www.researchgate.net/profile/Ioannis-Lefkos/publication/360720856/figure/tbl1/AS:1157593556893699@1653003219466/Physics-Knowledge-VP-PT-Density-per-activity-type-and-per-student-pair-The-first_Q320.jpg)