Composition of the second volume of mathematical puzzles in the first grade of primary school;
Five isosceles right triangles (two small triangles, one middle triangle and two large triangles), one square and one parallelogram.
Tangram is an ancient traditional intellectual toy in China. As the name implies, it consists of seven boards.
Triangles, parallelograms, irregular polygons, players can also spell them into various graphics, images, animals, bridges, houses, towers and so on. Or some Chinese and English letters.
The splicing is shown in the following figure:
Tangram consists of five isosceles right triangles (two small triangles, one middle triangle and two large straight triangles), a square and a parallelogram. These seven boards can be combined into many figures (1600), such as triangles, parallelograms, irregular polygons, etc. Players can also combine them into various characters, images, animals, bridges, houses, towers, etc., or some Chinese and English letters.
Extended data:
The benefits of jigsaw puzzles:
Tangram has numerous benefits and uses. The following are the benefits and uses of Tangram: shape concept, visual discrimination, cognitive skills, visual memory, hand-eye coordination, encouraging openness, spreading thinking and creating opportunities.
Tangram is a good partner to inspire children's intelligence, both ancient and modern. It can connect children with objects and forms, and has great development space for cultivating children's observation, imagination, morphological analysis and creative logic.