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Тема: письменный прием
умножения на двузначное число
3 класс.
Математика
Авторы:
НОВОЕ ЗНАНИЕ
(понятие, способ действия) и его
фиксация (эталон)

Алгоритм:
1.Умножаем на единицы.
2.Умножаем на десятки, начинаем
записывать под десятками.
3.Складываем два слагаемых.
4.Читаем полученный результат
ПРОБНОЕ ДЕЙСТВИЕ

х34
12
------
ФИКСАЦИЯ ЗАТРУДНЕНИЯ

Я не могу выполнить задание, потому
что пока не знаю, как это делать.
ПРИЧИНА ЗАТРУДНЕНИЯ

Нет знаний письменного умножения
на двузначное число.
Не знаю алгоритма.
ФОРМУЛИРОВКА ЦЕЛИ
ДЕЯТЕЛЬНОСТИ

Узнать алгоритм умножения на
двузначное число.
Научиться применять алгоритм
умножения на двузначное число
СРЕДСТВА ДЛЯ ОТКРЫТИЯ

1. Смысл умножения
2. Разряды
3. Алгоритм умножения на
однозначное число
4. Правило умножения числа на
сумму
ПЛАН ОТКРЫТИЯ (построения)
нового знания

1. Анализ алгоритма умножения на
однозначное число.
2. Устное умножение на круглые
десятки.
3. Наращивание недостающей части
алгоритма.
4. Выполнение сложения.

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