Джинсы с широкими штанинами для девочек повседневные штаны оборками начинающих ходить детей
6,50-9,14 $
Сохранить в закладки 1601098073035:
Item | Tangrams, set of 30 | ||||||
Design Specifications | 1) Tangram includes seven geometric shapes made up of five triangles (two small triangles, one medium triangle, and two large triangles), a square, and a parallelogram that are distinct in color. 2) The three different-size Tangram triangles are all similar, right isosceles triangles. Thus, the triangles all have angles of 45°, 45°, and 90°, and the corresponding sides of thesetriangles are proportional. 3) All the angles of the Tangram pieces are multiples of 45—that is, 45°, 90°, or 135°, and that the small Tangram triangle is the unit of measure that can be used to compare the areas of the Tangram pieces. 4) Material: Plastic that are free from toxic materials. 5) The size of the largest square that the 7 tangram pieces can form is 114 x 114 mm (minimum) with thickness of 7mm (minimum). 6) In this set, there is at least 6 distinct color. 7) Comes with a sturdy plastic that stores set of 30 tangram (210 pieces) and free from toxic materials. | ||||||
Functional Specifications | Used as an aid in developing mathematical concepts such as area, perimeter and patterns. |
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