Summer Study Workbooks: For fun. For learning. For keeping skills sharp all summer long.   It's important for kids to relax during the summer. But it's just as crucial that they don't forget key skills during the break. How can parents make time for fun and also set the stage for future success? Summer Study workbooks solve the problem! The 180 pages of enjoyable activities in each book review last year's lessons in math and reading--and prepare them for the year to come.