## Reflection: Writing Across the Disciplines Excellent Mathematical Explanations - Section 3: Guided Practice

The Common Core encourages students to use words to explain their mathematical thinking and reasoning. For instance, Mathematical Practice Standard 3 (MP3) asks students to "construct viable arguments and critique the reasoning of others."  Many students are not used to explaining their mathematical thinking using words, so in this lesson I made a "criteria for success" or checklist to help students understand what makes an excellent response.  This criteria for success helps keep students focused in building a viable argument and helps them explain their thinking clearly and concisely--it also facilitates a structure for struggling students who might not know how to use words to explain their thinking.  Additionally, the criteria for success gives students an easy vehicle to practice giving each other feedback and critiquing the reasoning of others since they have a clear vision of what success looks  like and can give appropriate feedback to help their peers improve their work.

Using checklists to guide student explanations
Writing Across the Disciplines: Using checklists to guide student explanations

# Excellent Mathematical Explanations

Unit 1: Comparing Numbers
Lesson 4 of 4

## Big Idea: Students use place value vocabulary to write excellent mathematical explanations about why a comparison statement is true or false.

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14 teachers like this lesson
Standards:
40 minutes

### Caitlin Vaughan

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