2
3
4
5
6
7
8
9
abstract
amount
background
banner
blackboard
blank
blankness
board
calculate
chalk
chalkboard
child
children
cipher
classroom
compute
consideration
count
cypher
design
digit
digital
digits1
education
enlighten
enlightenment
figure
flat
glass
grunge
icon
infant
label
lacunae
math
mathematics
number
numeral
numeric
pattern
plank
planning
preschool
primary
school
schoolroom
tag
teaching
texture
write