searching for a cookbook for my children to learn bake with

There are quite a few to select from but I thought you might want to start here on a list of top 10 children's cook books.  I especially like the one based on recipes from favorite stories children's books.

Also try Amazon for books for specific baking recipe books.  The link will take you to quite a few with high reviews on this page for each of the books listed.  I would especially look for age appropriate to fit your need. Enjoy! ; )

Baking with your children and be a fun and rewarding experience. I remeber leaning to bake with my mom and how enjoyable it was.
There is a great book by Abigail J. Dodge called Willlams Sonoma Kids Baking that can teach your kids a lot. It teaches them basic skills like being organized when cooking, how to peel fruit, and how to whip an egg. It also has recipes ranging from very easy to advanced. It is available from Amazon for $13.57 with free shipping.
For children aged 4-8 there is a very basic book called The Baking Book by Jane Bull that teaches safty skill for the kitchen and also 10 basic recipes and then add onto those recipies to show them how to add varity to there baking. There are nice photographs of the supplies and tools needed for each recipe. It is available from Barnes and Noble for $7.50.
If you want a book that has cooking included and is a little more advanced you might want to check out DK's Childrens Cookbook. It has many different tastes and flavors included in the recipies. Children who are using this book should be able to safely use a blender and food processor.