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Lesson Plan

Compare decimals to the hundredths using a visual model and the symbols >, =, or <

teaches Common Core State Standards CCSS.Math.Content.4.NF.C.7 http://corestandards.org/Math/Content/4/NF/C/7
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Big Ideas: A number line and grid are models that can be used to compare decimals. In order to compare decimals they have to be in the context of the same whole. When comparing decimals the place value with the highest value, or farthest to the left, needs to be compared first and then work your way to the right. This lesson builds on students’ work with comparing decimals through a task set at a Lego Club comparing heights of Legos. Students are presented with choice boards where they must determine which Lego is tallest using visual models. By comparing decimals with grids and number lines, students discover that more than one model that can be used to compare decimals. The mathematical concepts in this lesson build towards students’ future work with decimals and fractions in grades 5-6. Vocabulary: decimal, comparing, tenths, hundredths, greater than >, less than <, equal to =, equivalent Special Materials: Model Exploration Mat (see Supplementary Resources at end of lesson plan) dry-erase markers erasers
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