adolescence
1318
absorbed
active
african
american
app
assisting
black
blackboard
boy
breaks
caucasian
classes
classmate
college
desk
enjoyment
females
friendship
games
girl
groups
helping
indoors
information
interests
internet
lessons
males
multiethnic
obsession
pastime
peers
playing
pupil
recesses
school
searching
smartphone
student
surfing
teenage
time
university
use
white
young