For most topics you shouldn't become upset if your child does not master the material the first time through. There will be another chance next year. You can practice any topics the child has difficulty with (e.g. telling time) around the house so that he is better prepared next year. "
"Math Facts Meet the Spiral

Although the spiral approach works well enough for learning shapes, time, and other topics, it can present a problem for learning the math facts. Without continuing practice, young children tend to forget their math facts very quickly. When the spiral progresses to the next topic (identifying shapes, for example), the child has a break from the math facts and starts to lose them. School vacations and especially summer vacation present further opportunities for backsliding. Some math books/curricula provide a degree of practice for maintenance, but many don't provide enough. "

What should you do if the spiral approach to math facts isn't working for your child? One solution is to provide a math maintenance program of your own. This is done by printing practice sheets at the child's level for use on vacations and on days when the book provides no practice. This way the child doesn't lose ground during the many breaks.

Another solution is to jump off the spiral and practice the math facts to mastery independently of the book. After all, you don't have to use the spiral for everything. You can blend the two approaches by having the child continue with the spiral in the book for the other math topics while practicing math facts independently. We did this for my son, as described in the page on systematic practice.