This Fluency Activity is a part of the Lesson 8, Unit 4, Grade K. This fluency activity relates length with number. It also encourages students to explore how many fewer cubes are needed to make the towers the same length and number. The focus is on decompositions of 7 to prepare for the Concept Development. Continue play as in Lesson 4, except that one partner starts with a 7-stick. The other partner rolls a die and creates a tower using the number shown on the die.