The Polikarpov I-16 (Russian: Поликарпов И-16) is a Soviet single-engine single-seat fighter aircraft of revolutionary design; it was the world's first low-wing cantilever monoplane fighter with retractable landing gear to attain operational status and as such "introduced a new vogue in fighter design".[2] The I-16 was introduced in the mid-1930s and formed the backbone of the Soviet Air Force at the beginning of World War II. The diminutive fighter, nicknamed "Ishak" or "Ishachok" ("donkey" or "burro") by Soviet pilots, figured prominently in the Second Sino-Japanese War,[3] the Battle of Khalkhin Gol,[3] Winter War and the Spanish Civil War[4][5] – where it was called the Rata ("rat") by the Nationalists or Mosca ("fly") by the Republicans. The Finns called the aircraft
Colouring and cutting out books develop children's imagination and fine motor skills in a playful way. Most of them are also suitable for younger children who already know how to use scissors safely.
Assembling the models is simple and intuitive, so that even beginners can master it, for whom it can be the first step towards more advanced models or even their own creation.