Free, printable stories with built in grammar exercises available on Classroom Cereal

Classroom Cereal is a series of free, printable short stories with built-in grammar exercises. The original stories are published monthly and are divided into five parts, with each part of the story containing five grammatical errors. Parents or teachers can simply print the stories for students who can then enjoy the story while finding the errors. The site currently has two seasons of stories, with ten stories in each season.