Sums and Subtractions Trimino
We have to associate 2 operations with the same result.
The triminoes, by having 3 sides instead of 2, offers more possibilities of combinations than the dominoes: They can be associated by 1, 2 or 3 sides of each counter. We have to associate 2 operations with the same result.
28 triangular counters made of injected plastic, washable of 65 mm. side, and 2 mm. thick / 2,559 inch side and 0,0787 inch thick.
Comes in a plastic case closed with fasteners, and an outer sleeve of lithographed card.
Case of 24 x 20 x 3 cm. / 9,448 x 7,874 x 1,181 inch.
6 years and older.
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