In this lesson the student will learn that a single digit number is made up of ones and that 10 ones can be thought of as a bundle/ this bundle or 10 then creates a 2 digit number. The numbers 1-20 are explored with a focus on building the teen numbers. Great visual!! Students will need linking cubes or base 10 rods and a place value workmat so that they can build along with the lesson. Students can also interactively build numbers on the smartboard.