ncte.org - National Council of Teachers of English. Many resources by grade.
ricebowls.org - Offers lesson plans on various subjects supporting a great cause
discoveryschool.com - Free resources for teachers, parents and students.
discoveryeducation.com - Free lesson plans on a variety of subjects.
pbskids.org - Interactive fun featuring PBS kid line-up.
classroom.pbskidsplay.org - Classroom edition with resourcesfor teachers.
starfall.com - Free public service to teach children to read with phonics
ehow.com - Great source for middle school lesson plans