arithmetic
background
blackboard
block
bright
child
childhood
children
class
color
colorful
concept
conceptual
count
design
development
early
education
frame
fun
game
graphic
green
image
kid
learn
lesson
little
math
mathematical
mathematics
number
numbers
object
play
preschool
school
set
shape
student
study
symbol
table
teach
teaching
toy
white
wood
wooden
yellow