This number sense math unit helps develop number sense and concrete understanding of our number system (base 10) through lessons that progress through concrete, pictorial, and abstract. All of the materials relate to the first math standard in the kindergarten common core state standards K.C.C. Count to 100 by ones and by tens. This set includes activities for helping students understand our number system by using their fingers. The product also includes 3 different worksheets, an assessment to mark progress of mastery over the standard, song charts for 4 different songs/chants, and posters for counting by tens. All the materials build off of each other to give students all the necessities to master the skill.
You can find activities, lessons, and centers for all the math standards bundled here:
The Complete Core Curriculum of Math Standards for Kindergarten