Maths. 1 class. Verbal counting. Addition and subtraction within 20. 3000 examples

One of the conditions for successful training in mathematics is automated oral skills. Inability to an oral account leads to problems with general performance.
How to develop the ability of an oral account? Consider more orally.
With oral calculations, not only attention and memory develop, but also ingenuity, independence, flexibility of the mind, as well as the speed of the reaction and the brain performance of the brain is automated. The formulations and types of tasks will allow not only to work out to automatism, but also to teach the child to search and find rational ways to solve examples and problems.
The answers at the end of the book and detailed methodological recommendations on the second and third sides of the cover will help to effectively organize work in the classroom And at home and will be useful to teachers and parents.
The book is intended for collective and individual work in the lesson and independent classes at home