If you are teaching three-digit addition and subtraction with regrouping, you need this! The resource includes I Can Statements, strategy posters, worksheets and work mats for each strategy. There are problem solving strategies and worksheets with word problems. These are perfect for your whole class as practice, homework or formative assessments. Also would be great for small groups who are struggling with the strategies. This resource has been formatted using the using the new Easel Activities