If you're looking for an age-appropriate, engaging way to teach subtraction to your students, look no further than the Center Set 5 Up to 18. This versatile tool can be used in pull-out or push in services, and is perfect for small group interventions. Additionally, the Center Set 5 Up to 18 works in conjunction with IEP goal workbooks, making it a great choice for goal progression. For easy independent practice, the Center Set 5 Up to 18 is also a great extension of any lesson. Plus, it's 4x6 photo box storage compatible, so you can easily keep it organized and tidy.