Ep 125: The Over Strategy - Subtraction

We just love the Over strategy! In this episode Pam and Kim go through a Problem String to develop the relationships used to think about the Over strategy for subtraction.Talking Points:Over strategy is a great experience for people new to thinking Real Math.The Over strategy is one of the major relationships that students need to own.A Problem String to nudge the Over strategy.The Over strategy can be tricky, so students need lots of experience and contexts.Modeling student's thinking on a number line helps make thinking visiable as they grapple with the relationships.Teacher moves to modeling that can help support students' thinking.Where does over subtraction fit in the hierarchy?Bonus! The Over strategy "uses" place value (not just place labeling)!Download free examples of the Over Strategy: mathisfigureoutable.com/over   Download the free ebook of major strategies: mathisFigureOutAble.com/big