Mathematics skills can improve with just one technique _practice! Most of the children end up petrified of numbers and number games because of lack of appropriate knowledge. All this is a result of poor teaching mechanics. The vast school curriculum does not teach the children the perfect way of learning the subject. It's only proper practice and regularity that can make a student reach perfection! Do worksheets help a child?
There are some new materials being developed now based on what we are learning about how the brain learns. These brain_friendly materials should be an improvement over what has existed. I recently bought a book by Marcia L. Tate titled "Mathematics Worksheets Don't Grow Dendrites." I highly recommend her book. She gives a great deal of information on alternative activities that are better for your child's brain development and for learning.