Writing
 
Super Teacher Worksheets
Worksheets for all grade levels and various subject areas
http://www.superteacherworksheets.com/
 
SEN Teacher
Teaching aides and handouts for students with special needs
http://www.senteacher.org/Home/
 
Journal Buddies
Various writing prompts 
http://journalbuddies.com/teacher-parent-resources/first-grade-journal-writing-prompts/
 
Write Source
Writing Prompts
http://www.thewritesource.com/books/handbooks/write_one/
  
Tooter 4 Kids
More Writing Prompts
http://www.tooter4kids.com/journal_writing.htm
 
Journal Ideas
Writing Prompts
http://homepage.mac.com/mseffie/handouts/258journal.html
 
Super Teacher Worksheets
Various math, reading, handwriting, and grammar worksheets along with spelling lists
http://www.superteacherworksheets.com/
 
Story It
Picture prompt story starters
http://www.storyit.com/Starters/picstart.htm
 
Writing Fix
Story prompt generator
http://www.writingfix.com/Classroom_Tools/dailypromptgenerator.htm
 
Scholastic
Story prompt generator and handouts
http://teacher.scholastic.com/activities/storystarters/storystarter1.htm
 
A to Z Teacher Stuff
Writing prompts, various activities for many grade levels and subject areas, printable certificates, and much more
http://www.atozteacherstuff.com/Printables/index.shtml
 
First School
Preschool and kindergarten reading, math, handwriting, tracing and other activities
http://www.first-school.ws/INDEX.HTM
 
Kid Zone
Phonic practice worksheets, writing, and tracing handouts, coloring pages
http://www.kidzone.ws/phonics/index.htm
 
Hubbarbs Cupboard
Sight word books, ABC activities, guided reading, math, and writing activities
http://www.hubbardscupboard.org/sight_words.html
 
TLS Books
Various subject and skill areas for all grades, printable worksheets, and coloring pages
http://www.tlsbooks.com
 
Enchanted Learning
Various language activities and descriptions of punctuation marks
http://www.enchantedlearning.com/grammar/punctuation/