Pupils listening to their teacher at chalkboard
Palabras clave
children,
girl,
female,
caucasian,
boy,
male,
black,
young adult,
woman,
hd,
high speed,
ultra,
slow,
motion,
filming,
class,
classmate,
classroom,
education,
lesson,
studying,
elementary school,
elementary,
pupil,
school,
learning,
learn,
childhood
