1
2
add
addition
answer
apple
arithmetic
banner
basic
black
blackboard
board
calculate
chalk
chalkboard
class
classroom
clever
correct
easy
educate
education
elementary
equation
green
incorrect
knowledge
leaning
learn
lesson
math
mathematics
number
one
plus
primary
school
simple
studies
study
stupid
success
successful
sum
teach
teaching
tech
two
white
write
定額
Math simple equation on chalk board. One plus One equals two.の素材 [FY310105146648]
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