CCSS.Math.Practice.MP6 Attend to precision.
Mathematically proficient students try to communicate precisely to others. They try to use clear definitions in discussion with others and in their own reasoning. They state the meaning of the symbols they choose, including using the equal sign consistently and appropriately. They are careful about specifying units of measure, and labeling axes to clarify the correspondence with quantities in a problem. They calculate accurately and efficiently, express numerical answers with a degree of precision appropriate for the problem context. In the elementary grades, students give carefully formulated explanations to each other. By the time they reach high school they have learned to examine claims and make explicit use of definitions.
Mathematically proficient students try to communicate precisely to others. They try to use clear definitions in discussion with others and in their own reasoning. They state the meaning of the symbols they choose, including using the equal sign consistently and appropriately. They are careful about specifying units of measure, and labeling axes to clarify the correspondence with quantities in a problem. They calculate accurately and efficiently, express numerical answers with a degree of precision appropriate for the problem context. In the elementary grades, students give carefully formulated explanations to each other. By the time they reach high school they have learned to examine claims and make explicit use of definitions.
Implementing in the classroom:
Teachers who are developing students’ ability to "attend to precision" focus on clarity and accuracy of process and outcome in problem solving.
One way teachers can guide students to become more precise mathematicians is teaching students to become fluent in the language. At times math is like speaking another language. Some teachers incorporate math word walls to help build mathematician fluency.
Below are some examples of real life math word walls used in elementary classrooms.
One way teachers can guide students to become more precise mathematicians is teaching students to become fluent in the language. At times math is like speaking another language. Some teachers incorporate math word walls to help build mathematician fluency.
Below are some examples of real life math word walls used in elementary classrooms.
5 Helpful Tips on How to Use Your Math Word Wall from Teaching and Tapas Blog
Classroom Connection
Click on the image above to view the lesson example.
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In the closure section of his numerical patterning lesson, Dickinson chooses student pairs to present their thinking. His selection shows a progression of presenters that increases with sophistication and accuracy. He notes that “This ramping up allows learners the best chance to wrap their minds around the conversation that ensues… Note how we end with some clear disequilibrium in the room, yet we do have a bit of closure. I purposefully do not ‘give an answer,’ especially since the nature of this investigation was dissecting two different solutions.” This clip is also indicative of standard 3 (construct viable arguments and critique the reasoning of others).
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