- I can critique the reasoning of others.
For second graders, this means that students can explain their own mathematical thinking and can ask questions about a classmate's mathematical thinking. For example, if Aleks tells Chris that he used regrouping to determine that 34+5=39, then Chris might ask, "Can you show me how you used regrouping?" Aleks would then expalin his work to Chris and hopefully discover that while he did find the correct sum, he did not actually use regrouping to reach his answer.
On Friday, we practiced this strategy of "critiquing the reasoning of others" by working in small groups on a single story problem.
Each student independently solve the problem, then shared his or her work with groupmates. After discussing their work, the group chose one or two of the best examples for the 3 components of the story problem: