Here is a short preschool-friendly tutorial that teaches kids how to spell cat and dog. I created this for my little nephew. I hope the little person in your life will like it too.
(graphics by: www.graphicsfactory.com)
This blog offers lots of free downloadable files for teachers: posters, worksheets, handouts, lesson plans. The blog will also tell you where to find free (or really) cheap things for your classroom.