Student ponders class and science.
Palabras clave
back to school,
blackboard,
chalk,
class,
classroom,
cognition,
college,
doubt,
exam,
intelligent,
laboratory,
learn,
learning,
lesson,
pupil,
research,
school,
scientific,
stress,
study,
studying,
teacher,
teaching,
textbook,
thinks,
thinking,
university,
formula,
education,
science,
student,
calmness,
course,
problem,
test,
idea,
pondering,
person,
clever,
book,
boy,
looking,
experiment,
desk,
indoor,
laboratory,
scientist,
smart,
chemistry
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