Montessori Aids. Introduction to decimal system 1 AO0004
The pearl represents units, rod – tens, square – hundreds, cube – thousands. 1 cube, 1 square, 1 rod, 1 single pearl, presentation tray with
• size: 11.5 x 29.5 x 8.5 cm • different dim and weights
Wooden circles for fractions AO2027
improper fraction, mixed number. It also helps to acquire and improve the ability to perform operations on fractions: addition, subtraction, multiplication, division. Additionally, the students can learn the fraction decomposition - the expansion and contraction of fractions. • 10 green frames, dim.: 14 x 0.6 x 14 cm • 10 red circles with the dim. of 10 cm • shelves, dim.: 70.3 x 14.5 cm • material: wood; age: 6+
On two wooden shelves were placed 5 green frames with a circle inside them (10 circles in total). These circles illustrate fractions from whole to tenths. The first circle is a whole, the second is divided into two parts, the next are divided into three, four, five, six, seven, eight, nine and ten parts. This set introduces the concepts of: fraction, proper fraction,
Spindles AO2018
Mathematical aid consisting of 2 wooden boxes without lids. Each box is divided into 5 rectangular pigeonholes and their back walls are marked with numbers from 0 to 9. In each part of the box (except the one marked with zero) there are 45 spindles. They make easier introducing the concept of numbers in the cardinal aspect, acquire the ability to count from 1 to 9 and remember their order in a sequence of numbers. Additionally, this set develops the ability to associate the number of objects with a digit and it familiarises with the concept of zero as an empty set. • 45 spindles; 16 cm long • 2 x box, dim.: 28 x 3.5–7 x 21 cm • material: wood; age: 3+
Hundreds board AO2024
This set consists of a framed blue board divided into 100 squares, which correspond to the dim of counting cubes. It also includes a box with two compartments for dices with numbers from 1 to 100. In both compartment there are 50 cubes. The set is complemented by a square control board divided into one hundred fields. Each field is marked with numbers from 1 to 100, printed in the correct order. The board helps to develop counting skills from 1 to 100, to memorise the numerical sequence in the range of 100 and it allows the students to practice writing numbers from 1 to 100. • 100 counting cubes • 1 pc, 2 x 2 cm • 1 blue board and 1 control board 29.5 x 4 x 11 cm • material: wood • age: 3+
Substraction Strip board AO2026
1, the longest – 10. The other box contains grey slats to create a minuend. The shortest one symbolises the number 1, and the longest the number 17. The board allows the students to develop and improve the ability to subtract the numbers in the range from 1 to 18. 36 slats: 18 grey slats. • 2 x 2 cm ( the shortest), 36 x 2 (the longest) • 9 red slats and 9 blue slats, • 2 x 2 cm ( the shortest), 36 x 2 (the longest) • 1 board, 40 x 0.5 x 30 cm • 1 box for the red and blue slats, 21 x 4 x 7.5 cm • 1 box for the grey slats, 39 x 4 x 7 cm • material: wood; age: 3+
The set includes a board divided into square boxes by blue lines (216). Along the board’s upper edge are printed numbers from 1 to 18. The numbers 1-9 are blue and the numbers 10-18 are red. A blue line runs through the centre of the board, right after the number 9, dividing it into two parts. This set also contains a box without a lid, inside of which 2 sets of slats in red and blue can be found. They symbolise the numbers from 1 to 9. The red slats are divided into units by vertical lines. The slats on the right are marked with numbers. The shortest -
Addition Strip board AO2025
from 1 to 9. The red slats are divided into units by vertical lines. The slats on the right are marked with numbers: the shortest - 1, the longest – 9. The board allows the students to develop and improve the ability to add the numbers in the range from 1 to 18 and it also helps to understand the principle of commutative addition. • 18 slats, 2 x 2 cm ( the shortest), 18 x 2 (the longest) • 1 board, 40 x 0.5 x 30 cm • 1 box for the slats, 21 x 4 x 7.5 cm • material: wood; age: 5+
The set includes a board divided into square boxes by blue lines (216). Along the board’s upper edge are printed numbers from 1 to 18. The numbers 1-9 are red and the numbers 10-18 are blue. A red line runs through the centre of the board, right after the number 10, dividing it into two parts. This set also contains a box without a lid, inside of which 2 sets of slats in red and blue can be found. They symbolise the numbers
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