Math formulas and orange ballpoint pen.
Schlüsselwörter
mathematic,
mathematic,
algebra,
formula,
mathematic,
homework,
equation,
ball pen,
pen,
education,
example,
practice,
handwriting,
writing,
solution,
answer,
exam,
high school,
paper,
expertise,
intelligence,
learning,
studying,
school,
number,
nobody
Deutsch
