answer
attentive
autism
autism puzzle
basic
beginner
calculate
calculation
child
children
colorful
colors
concept
count
education
elementary
equation
exercise
green
homework
indoors
intelligent
kindergarten
learn
lesson
math
mathematical
mathematics
play
preschool
primary
puzzle
rod
school
solution
solve
sticks
study
studying
subtraction
successful
teaching
toy
wisdom
wood
wooden rod
wooden sticks