Видео с ютуба Ccss.math.content.1.Oa.a.1

First Grade: Use addition and subtraction within 20 to solve word problems

Addition Fluency First Grade Flash Cards

Missing Addends: The Pumpkin Patch (Numbers 1 - 10 / Kindergarten / First Grade)

Number Line: 10-3

Subtract with Number Line: 10-8

Number Line: 7-5

Word Problem: There were 3 apples

Week 3 Video Assignment: CCSS.MATH.CONTENT.3.OA.1 tutorial

Распределительное свойство умножения

Массивы для детей | Что такое массивы умножения?

Math Video Tutorial: Counting and Cardinality: Video 1 (Spanish)

Math Video Tutorial: Counting and Cardinality: Video 7

Math Video Tutorial: Counting and Cardinality: Video 5

Math Video Tutorial: Counting and Cardinality: Video 6

Math Video Tutorial: Counting and Cardinality: Video 3

Math Video Tutorial: Counting and Cardinality: Video 4

Math Video Tutorial: Counting and Cardinality: Video 2

Math Video Tutorial: Counting and Cardinality: Video 1

Сложение и вычитание в пределах 20 – Математика 1-го класса 1.OA.A.1

Digital Story