I've used this in my own classroom with 2nd grade.
This little unit helps students grasp the "why" behind multiplication by tying each activity to repeated addition.
Use when you introduce multiplication or in small groups for those who aren't grasping the concept.
Differentiate the craftivity by allowing students to work at their level - choosing how many groups and how many items they will work with.
The work pages allow students a gradual increase in rigor as they tie multiplication to repeated addition. Common core skills like explaining mathematical thinking is also included.