basic
bearded
become
blackboard
chalkboard
classroom
compasses
concept
cylinder
draw
easily
elements
equal
geometry
glasses
good
handwriting
high
items
learn
length
lesson
man
math
mathematics
mature
modern
multiplication
pencil
physics
practice
protractor
ruler
school
school lesson
science
scientific
senior
shape
sign
sketch
stem
teacher
technical
tool
triagle
triangle
trigonometric
tutor
use
定額
mathematics and people concept. Mathematics at board. favorite subject. senior man teacher use math triangle tool. bearded tutor man at blackboard. back to school. copy space.の素材 [FY310144699294]
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