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Standard 1.ATO.1

1.ATO.1 Solve real-world/story problems using addition (as a joining action and as a part-part-whole action) and subtraction (as a separation action, finding parts of the whole, and as a comparison) through 20 with unknowns in all positions.

Grade(s): 1

Subject(s): Math

Year: 2015

Addition and Subtraction Story Problems

Lesson

The students will be solving subtraction story problems and changing the number sentences into addition sentences.

Addition and Subtraction Egg Hunt

Lesson

In this lesson, students will have the opportunity to explore, create their own thinking, and collaborate. Students will work in groups to put together number problems with their sums and differences.