This Fluency Activity is a part of the Lesson 4, Unit 4, Grade K. This fluency activity again relates length with number. It also encourages students to explore how many more cubes are needed to make the towers the same length and number. Each partner rolls a die and creates a tower using the number shown on the die. Students compare towers and make a less than, more than, or same as statement. Then, students must add cubes to the shorter tower so it is the same height as the longer tower.