I think colored dominoes are more fun for the kids. So I made a set that you can laminate. I don't cut mine ( do as you like ) my kids use the whole boards to help them get started when we begin addition.
The activity with circle and dot assures you that your students will be able to count on. The child will say the number that is circled and then count on by touching the dots with his pencil. Eventually most children won't even need to make dots. They will just touch the lower number with their pencil. I have taught addition this way for years. The teachers in the grade above me also use this method. It works!