oh and the is it worth it- it depends on the kids you have. I have used it previously when I had more 3/4 yr olds. It was a nice "addition". Right now I am running younger- I will only have one 3 yr and one 4 yr and the rest are little so I am not ordering this year. I just don't have the time in my day to do it. But, since I ordered the 5 even though I didn't have 5 I have some extras and pull them out and use them
(I always save the teacher one and can use it multiple years)
It does give parents something to talk about with their kids....