The physical and digital versions of the 3rd-grade workbook can be found on major platforms:
Three friends (Lena, Marina, Katya) shared three different fruits. Marina did not have the apple. Katya did not have the apple or the pear. logicheskie zadachi s otvetami 3 klass istomina tihonova
Determining the order or traits of objects (e.g., matching colors of hats to specific characters). The physical and digital versions of the 3rd-grade
Drawing conclusions based on negative clues (e.g., "Ivan is not wearing a red shirt..."). Determining the order or traits of objects (e
Finding all possible variations of a set (e.g., ways to arrange items or participants in a game).
The workbook (3rd Grade) by N.B. Istomina and N.B. Tikhonova is a specialized educational resource designed to develop logical and algorithmic thinking in young students. Part of the "Harmony" (Garmoniya) educational system, it focuses on teaching specific problem-solving techniques rather than just simple calculation. Core Features & Educational Focus
While designed for the Istomina textbook, it is often used as a supplement for other 3rd-grade math programs to provide extra cognitive challenges. Key Problem Types in 3rd Grade