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.
Pleasant and Attractive _ Using current word processing programs and computers allow worksheets to be created using colorful graphics that children will find very enticing. This makes them more comfortable and relaxed the worksheet can look more like a game than a test. Using this colorful format, kids are able to feel eager to learn. The most exciting part is now they are developing online worksheets that have animated graphics. These can be access on a website from anywhere they have computer access which makes it an attractive solution to entertain your child while learning.