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Grade:	1st Grade
Standard #:	Standard 3:
Standard Description:	Understand how to add, subtract, compose and decompose numbers up to 100.
Sub Point #:	1.3c
Sub Point Description:	Recognize that adding and subtracting are inverse operations.
Book/ Unit:	Number Games and Story Problems
Investigation:	Investigation 1, sessions 2-9; all of Investigation 3
Book/ Unit (2):
Investigation (2):
Book/ Unit (3):	Inverse operations not explicitly taught, but briefly covered and encouraged.
Investigation (3):	Putting Together and Taking Apart(2nd Grade)
Book/ Unit (4):	All of Investigation 3
Investigation (4):	The entire unit emphasizes that students can use both addition and subtraction to solve the same problem.
Book/ Unit (5):
Investigation (5):
Attachments:

Created at 8/26/2005 9:26 AM by Eric Ferguson Last modified at 8/26/2005 9:26 AM by Eric Ferguson