Spiral Notebooks with separate Pocket Folders, labeled as follows: 
(please note - spirals & folders are color-coded according to subject)
  Purple......Language Arts
  Lt. Blue....Math
  Green......Science
  Dk Blue....Social Studies
  Red.........Music  
  Yellow......Library 
  [Mr. Creiner encourages the students to reuse their 3rd grade   
  "yellow" Library spiral notebooks and folders.]
  

Composition notebook, labeled as follows:  
  D.O.L.(Daily Oral Language)

Folder, labeled as follows:
  Take Home 
  (left side - HW)
  (right side - Parent Notes)

1/2" 3-ring binder with loose leaf paper

Assignment pad (Please get the one from our school store)

Clipboard

Pad of Yellow Paper (letter-size, not legal-size)

Ruler (Please make sure that it has both centimeters and inches)

No. 2 Pencils

Pencil Sharpener

Thin Markers (optional - I will be providing colored pencils to every
student)

Highlighters

Post-Its (squares)

Glue stick

Scissors  (Blunt ones please)

Pocket dictionary

Pocket thesaurus (Combination dictionary/thesaurus is ok)

Pencil Box - plastic snap top spacemaker-style

Box of tissues (We each donate one box for the classroom)

Smock for Art

Headphones or Earbuds for Computers (in a labeled ziploc bag)