Unit 2, Lesson 4# The Train Game

Massachusetts Department of Elementary and Secondary Education 60 min(s)

Students solve addition and subtraction problems based on passengers getting on and getting off of a train; the focus of this lesson will be identifying the required operation (addition or subtraction) and developing students' use of an open number line to solve addition and subtraction problems. As you plan, consider the variability of learners in your class and make adaptations as necessary.