These Puzzles for Proficiency reinforce key place value concepts up to 9,999 aligned to the 3rd and 4th grade Common Core Standards (3NBT.3, 4.NBT.1, 4.NBT.2). The resource includes 30 puzzles - more than a complete class set! Each puzzle contains 4 pieces - one piece has the standard number, one has the word form, and two pieces have different ways of representing the expanded form. Print and laminate for long term and easy use.They can be used in a plethora of ways. For example:-Bell Ringe