Sums Trimino (up to 20)

Didactic content

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 pairs of numbers which addition is 20.

Material

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.

Features/packaging

Comes in a plastic case closed with fasteners, and an outer sleeve of lithographed card.

Size

24 x 20 x 3 cm. / 9,448 x 7,874 x 1,181 inch.

Ages

6 years and older.