Caucasian mid adult male teacher giving lecture on ecology and environment to students during outdoor lesson in summer park
Caucasian male teacher holding windmill model in hands giving outdoor lesson to group of multiethnic students sitting on grass in park on sunny day
Unrecognizable male teacher showing work of windmill model to diverse group of school children during outdoor class in public park on warm sunny day
Caucasian male teacher telling interesting story to group of multiracial school children sitting together on green grass in public park having lesson
Multiethnic group of volunteer children and their leader planting in public park together helping environment
Portrait of Caucasian male Ecology teacher and group of multicultural students posing for camera sitting on green grass in public park on warm sunny day
Caucasian volunteer girl with diverse classmates and teacher planting in public park in summer taking part in eco project to help environment
Male Teacher Discussing Alternative Energy Sources with Diverse Group of Students in Outdoor Class
Male school teacher of Botany and multiethnic group of children having discussion during outdoor lesson in public park
Young volunteers collecting trash in garbage bags on ocean coast at sunset. Ecology environment protection.
Young volunteers collecting trash in garbage bags on ocean coast at sunset. Ecology environment protection.
Multiethnic schoolchildren and their male teacher holding windmill model having discussion on alternative energies while sitting on grass in public park having outdoor class