Assertion: abacus's frame | /r/CapableOf | help with counting
Facets:
Source sentences:
text: Ancient users created an early form of the abacus whereby they slid beads across a frame helping with counting and simple calculations.
text: Prior to the advent of a modern numerical system, ancient users of the early form of the abacus were able to slide beads across a frame, which aided in both counting and simple calculations such as addition and subtraction.