Calculator.
Palabras clave
calculating machine,
children,
abacus,
addition,
arithmetic,
background,
banner,
bead,
business,
calculate,
childhood,
children,
class,
closeup,
colours,
colourful,
concept,
copy space,
count,
deduction,
desk,
education,
elementary,
green,
kindergarten,
learn,
learning,
mathematic,
mathematic,
nobody,
number
){kind=link}