What do you think of when you see/hear the word difference? After sharing our thoughts and finding out that the difference is the amount left when one quantity is subtracted from another, we then proceeded to apply what we learned about difference during an activity called Gummy Stretch. In pairs, students had to measure the length of the gummy worm before stretching, and then again after stretching. Then they had to show how they found the difference between their measurements and the strategies they used. It was a fun learning activity, which made the abstract concept of difference more concrete for us.