![Illustrative Mathematics: Addition and Subtraction Fluency Set of Tasks [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Illustrative Mathematics: Addition and Subtraction Fluency Set of Tasks [Pdf] Lesson Plan")
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Illustrative Mathematics: Addition and Subtraction Fluency Set of Tasks [Pdf]
Students explore the relationship between addition and subtraction and develop an understanding of decomposing numbers in different ways in this first-grade lesson plan.