A wooden abacus displays rows of red yellow blue green beads on metal rods
Schlüsselwörter
abacus,
wood,
bead,
red,
yellow,
blue,
green,
metal,
rod,
row,
education,
learning,
counting,
mathematic,
mathematic,
frame,
calculation,
device,
tool,
school,
number,
arithmetic,
cognition,
teaching,
object,
indoor,
table,
isolated,
nobody,
colours,
bright,
shiny,
desk,
counter,
vintage,
retro,
toy,
antique,
compute,
calculate,
numeracy,
preschool,
elementary,
childhood,
equipment
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