The National Council of Teachers of English (NCTE) has a great website for early literacy educators and parents filled with teaching strategies, suggested professional reading and lessons.
Check out this comprehension lesson that uses animal stories/nonfiction pieces as mediums through which children can learn to distinguish fact from fiction. Embedded in the lesson plan are links to numerous child-friendly web pages filled with information on ants, penguins, polar bears and more!
I also find the NCTE web page on Writing in the Early Grades a very useful resource for learning both the research behind writing development, as well as lesson plan ideas for helping children learn to write.
This is definitely a site I am going to return to!