Mathematical cafe. Oral account treasury quest. Addition and subtraction within 100,000. Astakhova N.

"Oral account is gymnastics for the mind." This simulator will help to make it interesting and diverse. Having decided examples, the child can “buy” a dish in our mathematical cafe. The task of each turn is aimed at working out a certain type of examples of an oral account from an account within 10 until the addition and subtraction of four -digit numbers. The simulator is suitable for both individual work and collective quests in lessons and classes of mathematical circles. The simulator has a meta -subject approach: the guys will not only work out the techniques of oral account, but also receive some ethnographic information. It is recommended for use along with the book “Quest Trinager Oral Account. Addition and subtraction ”, as well as notebooks for collective quests.