Rounding numbers with Bob at the mall! Stories about Bob going shopping and his need to rush to the restroom tell the story of rounding numbers. Several story examples take students from the concrete to the more abstract. To internalize the concept, have students draw their own pictures on their personal white boards or notebooks during the lesson. I’ve included a printable (the last slide) for your bulletin board as a reminder of the lesson. My students really took to this analogy – especially when I made it funny about Bob’s urgent need for the restroom.