This Application Problem is a part of the Lesson 21, Unit 4, Grade 2. Katrina has 23 stickers, and Jennifer has 9. How many more stickers does Jennifer need to have as many as Katrina? Guide the students through the use of a comparison tape diagram to represent this compare with difference unknown problem type. Remember that, if possible, Application Problems can be completed at a time of day other than the regular math time if they do not directly flow into the lesson, as is the case here.
