Express courses for learning account. Addition and subtraction with the transition after 10. Part 1

Addition and subtraction with the transition through a dozen is one of the key skills, without which the child simply will not be able to fully master mathematics. Unfortunately, many children experience difficulties in solving such examples. Moreover, this applies not only to preschoolers, but also by primary school students. Often they try to remember these examples, learn them by heart, as a multiplication table. But this is the wrong way: let"s say, "7+8 = 15" The child will remember, but what about the example "57 +68 "? With the help of our notebook, the child will master the universal way to solve any examples with the transition through a dozen - to lay out numbers into components. Why teach when you can simply master the only correct solution algorithm?! Performing game tasks, the child meets with different options for showing examples - quantitative, linear and graphic. Manyly pronouncing the course of the solution of examples, he will certainly remember the desired algorithm, and further will use it automatically. Wish Success!