The tray mathematician.Utility model patent board teaching allows the construction of mathematical knowledge, develop logical reasoning, understanding of the natural numbers and the decimal system, as well as the learning of the four fundamental operations, namely, addition, subtraction, M. Ultiplicau00e7u00e3o and division; with the perforated matrix (1), with 10 rows and ten columns which correspond to.Respectively, the elements and the quantities disposed in the upper part of the tray, capable of receiving pins (4), which can be placed and removed according to the mathematical operations to be made, still on the side (2) of the tray there is a sequence of units, tens, hundreds, a The age of thousands, ten thousands, hundred thousands.Thus operate the four operations of mathematics, namely, addition, subtraction, multiplication, and division.
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