Common Core Lesson1st Grade1.OA.4 First Grade Common Core Lesson
In this 1.OA.4 First Grade Common Core Lesson, students practice finding the missing added using subtraction as strategy to solve.
Common Core Lesson1st Grade1.OA.1 First Grade Common Core Lesson
In this 1.OA.1 First Grade Common Core Lesson, students find the missing addends in equations up to 20.
Common Core Lesson1st Grade1.OA.8 First Grade Common Core Lesson
In this 1.OA.8 First Grade Common Core Lesson, students find the unknown whole number in addition equations up to 20.
