Unit 1, Lesson 10, Grade 1 icon
Unit 1, Lesson 10

Zoo Mysteries

Massachusetts Department of Elementary and Secondary Education 45 min(s)

In this lesson, students will write a story to match an equation with change unknown, addend unknown or difference unknown. They will explain why the equation models the story using pictures or objects then solve. As you plan, consider the variability of learners in your class and make adaptations as necessary.

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