Prairie Lakes Area Education Agency

Winter Progress Monitoring & Instructional Strategies for 1.OA.1

Use addition and subtraction within 20 to solve word problems involving situations of adding to taking from, putting together, taking apart, and comparing with unknowns in all positions. (1.0A.1)

Progress Monitoring:
Pose add/subtract problems for students to solve.  Refer to Iowa Core Table 1.

Instructional Activities:
Number Talk not appropriate for this Standard
Kathy Richardson: Developing Number Concepts
Addition and subtraction about number combinations to 20 Activity 3-28 related combinations: tall stacks, Activity 3-30 working with ten - shapes, Activity 3-34 two ten-shapes: addition and subtraction.
Van de Walle: Developing meaning for the operations addition and subtraction Activity 9.3 up and down the number line, Activity 9.4 missing-part subtraction 
Look for activity Double Decker Bus under 1.OA.1 - working on word problems involving addition and subtraction



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