Numeral Frame on Floor Stand

Numeral Frame on Floor Stand

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This mounted teaching abacus has ten horizontal wires held in a wooden frame. A metal rod at the base fits into a wooden floor stand. Ten large wooden beads are on each wire. Each row of beads is a differently colored to suggest the different numbers that sum to 10. Thus the first row has four green beads, three red beads, two blue beads and one yellow bead. The second row has two green beads, three red beads, three blue beads, and two yellow beads. The third row has one green bead, three red beads, three blue beads, and three yellow beads. The fourth row has two red beads, four blue beads, and four yellow beads. The firth row has five red beads and five blue beads. The sixth row has four blue beads and six yellow beads. The seventh row has three green beads and seven ted beads. The eighth row has two blue beads and eight yellow beads. The ninth row has one green bead and nine read beads. The tenth row has ten blue beads. Attached behind the beads is a sliding blackboard.
Currently not on view
Object Name
numeral frame
Physical Description
wood (beads, frame, stand, blackboard material)
metal (crosspieces, joint material)
overall: 216.5 cm x 58 cm x 33 cm; 85 1/4 in x 22 27/32 in x 13 in
ID Number
catalog number
accession number
Credit Line
Dr. Richard Lodish American School Teaching Collection
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Arithmetic Teaching
Data Source
National Museum of American History
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