I am a first grader and bought this game this school year. Our school works on numerical reasoning, problem solving and number flow and supports them in our math block. My first graders love this game! I had to purchase additional playsets for this particular game because it is so popular. I like I Sea 10 because it is flexible and meets all the needs of the students. For those who need extra support, students can "bring along" 10 with 2 pads. For those who need a challenge, they can "merge" 10