Basic mathematical formula with white text on black background. Basic math formula written on the chalkboard.
Schlüsselwörter
exercise,
teaching,
training,
writing,
lecture,
number,
solution,
plus,
figure,
homework,
physics,
symbol,
mathematic,
trig,
white,
worked,
cognition,
analysis,
teacher,
blackboard,
graphic,
black,
illustration,
drawing,
school,
class,
signs,
handwriting,
classroom,
chalk,
geometric,
student,
university,
learning,
instructing,
study,
calculation,
calculus,
lesson,
exam,
background,
science,
mathematic,
geometry,
board,
mathematical,
college,
calculate
Deutsch
