The Advanced Montessori Method Volume 2; The Montessori Elementary Material, Tr. by A. Livingston 12+

📒 This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ... Let us now make up a number on the counting-frame; for example, 4827. We move four beads to the left on the thousands-wire, eight on the hundreds-wire, two on the tens-wire, and seven on the units-wire; and we read, four thousand eight hundred and twenty-seven. This number is written by placing the numbers on the same line and in the mutually relative order determined by the symbolic positions for the decimal relations, 4827. We can do the same with the date of our present year, writing the figures on the left-hand side of the paper as indicated: 1917. Let us compose 2049 on the symbolic number frame. Two of the thousand-beads are moved to the left, four of the ten-beads, and nine of the unit-beads. On the hundreds-wire there is nothing. Here we have a good demonstration of the function of zero, which is to occupy the places that are empty on this chart. Similarly, to form the number 4700 on the frame, four Tlie bead material used for addition and subtraction. Each of the nine numbers is of different colored beads. Counting and calculating by means of the bead chains. (.1 Monlessori School in Italy.) This shows the first bead frame which the child uses in his study of arithmetic. The number formed at the left on the frame is 1,111. thousand-beads are moved to the left a...