Traditional abacus with colorful wooden beads
Schlüsselwörter
abacus,
toy,
colourful,
wooden,
bead,
counting,
education,
arithmetic,
tool,
count,
children,
children,
school,
footed,
calculate,
children,
learn,
mathematic,
easy,
retro,
instructing,
frame,
mathematic,
number,
calculation,
vintage,
educational,
learning,
summing,
quantity
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