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This pack includes 4 lessons (in powerpoint format) with 4 corresponding activity/student handouts (microsoft word format & editable). In addition, there is a performance task also included in the package to challenge your students who are comfortable with addition of big numbers and decimals.
Regrouping/carrying over can be a difficult concept for many students to grasp. While planning this mini unit, I had the idea of starting off by introducing the idea of regrouping (with "simple boxes") and following a sequence where the students gradually are asked to do a little bit more as they become more confident. By the last lesson, students are taking numbers that are given to them horizontal, and asked to line them up vertically.
After using this lessons in my own classroom, I am confident these will help a lot of other teachers too! The numbers start in the tens/hundreds and eventually go into the thousands! Thanks for looking!