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Lesson

Standard 6: Attend to Precision

Clip 17/43: Standard 6: Attend to Precision Using Decimals Part 2C

Overview

Mathematically proficient students….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.

Erika Isomura’s 5th-grade students continue to work in pairs to classify, sort, and glue down decimal representations in numerical order. Students discuss the reasonableness of their results with their partners prior to gluing down their cards. Erika connects pairs with each other to have them share their thinking, discussion, and results (“Why did you put this card here?” “Are both of these answers possible?” “What do you think of their idea? Does it make sense?”)

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Materials & Artifacts