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Lesson Plan

Create three-digit numbers by using ones, tens, and hundreds

teaches Common Core State Standards CCSS.Math.Content.2.NBT.A.1
teaches Common Core State Standards CCSS.Math.Content.2.NBT.A.1b
teaches Common Core State Standards CCSS.Math.Practice.MP3

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Big Idea: 3-digit numbers can contain a “hundred," which is equal to 10 groups of 10. This lesson builds on previous lessons' work with two-digit numbers. The task asks students to model the three-digit number shown in the question according to guidelines, i.e. with only hundreds and tens. This approach gives students support in building three-digit numbers; the base ten blocks give students a jumping-off point for their thinking. For instance, they can immediately think about how they could show 21 in only ones instead of tens and ones. Special Materials: Base Ten Blocks
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