This is a powerpoint to support Engage NY/ Eureka Math Module 2 , Unit Conversions and Problem Solving with Metric Measurement . It is presented as a Number Talk to help promote fluency. Use a Number Talk instead of a fluency activity in the modules. Number Talks are short discussions between a teacher and students about how to solve a particular mental math problem. The focus is not on the correct answer, but on all the possible methods of finding the answer. This is an opportunity for students to learn from one another.