Language: Italian

Language: English

ISSN: 0362-4331

Language: English

ISSN: 0362-4331

Abstract/Notes: This invention relates to a device for teaching young children elementary mathematics. For this purpose I provide a number of strips of paper of varying widths (preferably four such strips) having oii one side numbers and on the other side an adhesive surface. The narrowest strip contains the figure 1 repeated one below the other throughout the strip. The next the figure 10, the next the figure 100, the next the figure 1000 and so on as may be required. Preferably the strips of paper are wound on spools or reels differing only in that their width corresponds to the width of the paper strips. The spools or reels may if desired be threaded upon a common centre-piece. The strips may be all of the same colour or of different colours. By means of such strips it is possible to teach young children quite easily simple addition of two or more numbers by building up tne said numbers by cutting off the requisite pieces of the strips and pasting them on to a book or other surface and adding up the result. Similarly it is possible to teach simple subtraction by teaching the children first to build up the larger number out of pieces of the strips and then to take away pieces corresponding to the smaller number.

Language: English

Date of issue: 1930-06-12

Abstract/Notes: This invention consists of a device for teaching small children multiplication. For this purpose I form a rectangular frame, preferably of wood having on it a number of parallel vertical wires on each of which are strung ten beads. Preferably there are nine such wires. At the bottom of the frame opposite the enid of each of the wires is placed the AD figure 0, and at the top of the frame reading from the right to the left opposite the ends of the wires are placed the numbers 1, 10, 100, and so on (if there are nine wires) up to a hundred million respectively. Preferably the three numbers up to 100 are printed in the same colour on the same background, the numbers 1000 to 100,000 are painted in the same colour and ea on the same background, but with the colour of the printing or the background different from that of the former three numbers and similarly the numbers a million to a hundred million, the printing or the background of all three being the same but differing in one or other from both of the foregoing sets of figures Preferably the beads are in three colours, those on the wires corresponding to the figures 1, i000 and a million being the same colour, those on the wires corresponding to the figures 10, 10,000 and 10 million being the same colour and those on the wires corresponding to the figures 100; 100,000 and 100 million being of the same colour. Preferably the wires are evenly spaced apart...

Language: English

Date of issue: 1930-09-04

Abstract/Notes: This is a device for teaching small children multiplication. For this purpose I provide two sets of numbers printed or written on card board, to paper, bone or similar suitable substance.I The first sets consist of several (and preferably six) series of nine numbers each, X the first of these series consisting of the units 1 to 9, the next multiples of ten from 10 to 90, the next multiples of 100 from 100 to 900 the next similar multiples of 1000, the next similar multiples of 10,000 and the last of 100,000 and so on as may be required. Preferably each series is printed in a different colour from every other series, but the individual numbers of the series are printed in the same colour and the piece of material on which the set is printed differs only in the matter of length. The numbers hereinbefore described are intended to be used for selection in order to make up the answer of the sum. I provide another set of numbers consisting of a number of series (preferably four) the first series consisting of the numbers 1 to 9. the next consisting of the numbers 2 to 9 and the number 10, the next consisting of the numbers 2 to 9 and the number 100 and the last consisting of tne numbers 2 to 9 and the number 1000...

Language: English

Date of issue: 1930-07-31

Language: English

Language: English

ISSN: 1054-0040

Language: English

Language: English

Archive: Seattle University, Lemieux Library and McGoldrick Learning Commons, Special Collections