We are able to then conceptualize the term Combinatorial thinking for the school primary: COMBINATORIAL thinking: is the one that appears when the General principles and elements of the combinatorial theory, are used in the solution of a task giving treatment to present Combinatorial ideas. ELEMENTS of COMBINATORIAL TERORiA: variations, permutations or combinations (with or without repetition). COMBINATORIAL IDEAS: one of the forms of expression of combinatorial thinking. SOME EXAMPLES OF EXERCISES THAT APPEAR IN DIFFERENT GRADES OF SCHOOL WHERE COMBINATORIAL IDEAS ARE PRESENT. Offers different possibilities of how you can pay with coins the following amount: 17, 28, 45, 50 and 70 (first grade exercise 48 p.

114) writes four numbers behind places where (3. grade exercise. 7 p. 21): units has a zero in the hundreds has a zero Type a number (4.grado exercise. 15 p.

5): four places that have a three in the “hundreds” of three places that has a zero in the TENs. Three places which have a two in the hundreds and a four in the units. Type a number (5. grade exercise 4 page 8): three figures which have an eight in the dozens. Five-digit that has a three instead of the hundreds. Seven-digit that has a five instead of the thousand units. Four segments with their lengths have represented you in figure, choose all possible Threesomes of segments that might form a triangle. If you do not select any trio it is based. (6 grade exercise 19 p. 198) as it can be seen in all cases suitable outside teacher could determine the total of possible different responses, by helping the rules or principles of the combinatorial theory, to exploit all the potential offered by the development of combinatorial thinking in primary school children. Although it may seem simple, you affirm in advance It is not it. We suggest for example that of first grade and want the teacher to try to find all the different answers that exist if it is said the child to offer possibilities of pay 17 using coins worth 1, 2 and 5.