2.3C Addition or Subtraction to Solve Problems (ONLY Addition at this time)

2.3 Number, operation, and quantitative reasoning.  The student adds and subtracts whole numbers to solve problems.
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1.3B Use concrete and pictorial models to apply basic addition and subtraction facts (up to 9+9=18 and 18-9=9)	2.3 C select addition or subtraction to solve problems using two-digit numbers, whether or not regrouping is necessary (only addition at this time)	3.3B Select addition or subtraction and use the operation to solve problems involving whole numbers through 999
Select addition to solve problems using two-digit numbers, whether or not regrouping is necessary Select subtraction to solve problems using two-digit numbers, whether or not regrouping is necessary Select - to choose in preference to another or others; pick out Solve - to work out the answer or solution to (a mathematical problem)

Activities:

• Model using CISD Problem Solving Map
• involve a written description of the addition or subtraction used on the map
• join, separate, add, subtract, compare
• Posters of the PS map for small group work one day per week
• NEW Poster Math - Problem solving every other Friday

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Possible Test Questions: