There are some wonderful books out there you should definitely consider if you have kids and love to garden.
I have posted here some of the books I think you might like (thank goodness for old blog posts from whence came a lot of this information!!)
Books by Sharon Lovejoy
There are four books by Sharon Lovejoy that focus on doing garden things with the kids. They are all the same 'kind' of book (with the exception of Toad Cottages), which is to say they consist of themed children's gardens, PLUS activities and garden ideas. The books are lovely, and are illustrated with Ms. Lovejoy's artwork, which is always a bonus :) I highly recommend them, and most children will enjoy browsing through them for ideas! They have several garden plans and ideas for educational activities with the kids. You will often see them recommended for these reasons :) Take for instance the pizza garden… made with pizza ingredients, looking like a pizza and with several follow-up activities to go along with it!