30 000 примеров по математике. Счет до 20, цепочки примеров. 1 класс

"30,000 Examples in Mathematics. Counting to 20, Chains of Examples. 1st Grade" is a collection of examples for addition and subtraction within 20. The manual is based on the effective author's methodology of the renowned practitioner educator O. V. Uzorova. By solving examples and applying knowledge in practice, a 1st-grade student will develop mathematical skills and prepare for tests and assessments in school. The book can be used for home and classroom activities in all federal primary school programs. For primary school students.