www.learningpage.com Membership is free, but you do need to be a member to download the books. They have themes (like oceans, mammals, space, etc). All the worksheets have that theme on them. If i remember correctly the PreK book is all in one. The K-3rd materials are broken out in to Math, Language Arts and Science. HTH.
First School has a *fantastic* site with a ton of printables, I've used it for my first three kids and plan to continue using it for my fourth: http://www.first-school.ws/THEME/alphabetp6.htm I love dlkt-kids with all their crafts: http://www.dltk-teach.com/minibooks/index.htm
http://www.kidzone.ws/kindergarten/learning-letters/books.htm http://www.kidzone.ws/prek_wrksht/shapes.htm They have shape books in each shape you look at.
