Unit 2, Lesson 5# Building Numbers

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

This lesson focuses on the composition and decomposition of numbers into different combinations of a ten and some ones without changing the value. Children will work to determine the position of digits in a number 11-19, and articulate the difference between the tens and one place. As you plan, consider the variability of learners in your class and make adaptations as necessary.