Addition+and+Subtraction+Problem+Types+and+Strategies

=Addition and Subtraction Problem Types and Strategies =


 * **Join Result Unknown** || **Join Change Unknown** || **Join Start Unknown** ||
 * **Separate Result Unknown** || **Separate Change Unknown** || **Separate Start Unknown** ||
 * **Part-Part Whole/ Whole Unknown** || **Part-Part Whole/ Part Unknown** ||  ||
 * **Compare Difference Unknown** || **Compare Quantity Unknown** || **Compare Referent Unknown** ||

=Problem Type Task= For your problem type, identify all of the possible strategies children might use to solve them using direct modeling, counting, and number facts. Create a WIKI page to record your findings.
 * Task: **

Quality Standard
 * Type of problem (Title and Connie and Juan example)
 * All possible strategies (direct modeling, counting, and number facts) on a video
 * Corresponding number sentence with strategy
 * Written explanation of the strategy

** Resources ** __Cognitively Guided Instruction__ Carpenter/Fennema

Addition and Subtractions Problem Types: Chapter 2, pg. 7-12

Addition and Subtraction Solution Strategies: Chapter 3, pg. 15-31
 * Direct Modeling, pg. 15
 * Counting, pg. 18
 * Number Facts, pg. 24