It is not a new invention, but the reintroduction of the natural way of learning. It is a revolution towards simplicity, because it starts from the intuitive abilities of each child who comes to school full of information about numbers and the desire to learn.

THE TOOL

The Line of 20 represents our hands, which have always been the fundamental tool for performing mental calculations.

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INNOVATIONS IN THE NEW EDITION

In this new edition, the numbers printed on each peg of the tool have been substituted with a separate, removable strip with the numbers 1-20 that can be located under the pegs.  This strip can be removed early on so as not to disturb the perception of quantities during the calculation process.
Peg number 11 has a tactile warning device in order to be used with blind children.
The book that presents the program to be carried out day by day with the pupils is illustrated in full colors and shows the characters that belong to Pitti’s world.
The instructions guide for parents and teachers is a separate 16-page book, located in the third page of the cover.

THE BOOK

The full-color book presents the program to be carried out day by day in order to achieve the skills required by the mathematics program on numbers within 20 (but also to 100 and 1000), and presents addition, subtraction, and word problems. Pattern drawings and mandalas help provide relaxation after the hard work and effort.

 
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