DMPS Elementary Mathematics
Anna Taggart
Elementary Math Coordinator
515-242-7892
anna.taggart@dmschools.org
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Construct viable arguments and critique the reasoning of others.
2nd Grade

Mathematically proficient students in Second Grade:

  • Accurately use definitions and previously established solutions to construct viable arguments about mathematics. 
  • During discussions about problem solving strategies, students constructively critique the strategies and reasoning of their classmates. 
  • For example, while solving 74 - 18, students may use a variety of strategies, and after working on the task, can discuss and critique each others’ reasoning and strategies, citing similarities and differences between strategies.
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Copies of this poster are available through Heartland AEA11.
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Think. Grow. Learn
Des Moines Public Schools
Elementary Math Department
901 Walnut Street
Des Moines, IA 50309